Page 1
Operator’s
Manual
Part Number 0192117EE
June, 2006
Page 2
The aerial platform is not electrically insulated. Death or serious injury will result from contact
with, or inadequate clearance from, an energized conductor.
Do not go closer than the minimum safe approach distance as dened by the Minimum Safe
Approach Distance section in Chapter 3–Safety.
Regard all conductors as energized.
Allow for electrical wire sag and aerial platform sway.
If the platform, booms, or any part of the aerial platform contacts a high-voltage electrical conductor,
the entire machine can become electrically charged.
If that happens, remain on the machine and do not contact any other structure or object. This includes the ground, adjacent buildings, poles, and any other objects that are not part of the aerial
platform.
Such contact could make your body a conductor to the other object, creating an electrical shock
hazard resulting in death or serious injury.
If an aerial platform is in contact with an energized conductor the platform operator must warn ground
personnel in the vicinity to stay away. Their bodies can conduct electricity creating an electrical shock
hazard resulting in death or serious injury.
Do not approach or leave the aerial platform until the electricity has been turned off.
Do not attempt to operate the lower controls when the platform, booms, or any part of the aerial
platform is in contact with a high-voltage electrical conductor or if there is an immediate danger of
such contact.
Personnel on or near an aerial platform must be continuously aware of electrical hazards, recognizing that death or serious injury can result from contact with an energized conductor.
Page 3
Table of Contents
Chapter 1 – Introduction
Aerial Platform Features .............................................1
Options .......................................................................1
Operator’s Manual ......................................................1
Safety Alerts ...............................................................1
Operation ....................................................................1
Maintenance ...............................................................2
Owner and User Responsibilities ...............................2
Additional Information .................................................2
Chapter 2 – Specications
Component Identication ............................................3
Working Envelope ......................................................4
General Specications................................................5
Aerial Platform .........................................................5
Platform ...................................................................5
Function Speed .......................................................5
Drive System ...........................................................5
Tires ........................................................................5
Electrical System .....................................................5
Hydraulic System ....................................................5
Engine .....................................................................5
Fuel Tank Capacity ..................................................5
Ambient Air Temperature Operating Range ............5
Maximum Wind Speed ............................................5
Engine Specications .................................................6
Engine Oil Viscosity ....................................................6
Cummins B3.3 .........................................................6
Chapter 3 – Safety
Electrocution Hazards ................................................7
Minimum Safe Approach Distance .............................7
Prestart Inspection......................................................8
Work Place Inspection and Practices ......................... 8
Operation ....................................................................8
Tip-Over and Falling Hazards .....................................8
Electrical System ........................................................ 9
Hydraulic System........................................................9
Engine and Fuel Handling Precautions ......................9
Placards and Decals.................................................10
Chapter 4 – Safety Devices1
Emergency Stop Controls......................................... 11
Emergency Power System ....................................... 11
Emergency Bleed Down System .............................. 11
Emergency Lowering Knob ......................................12
Axle/Boom Interlock..................................................12
Ground Operation Switch .........................................12
Platform Foot Switch ................................................12
Guardrails .................................................................12
Lanyard Anchors.......................................................13
Envelope Management System................................13
Height Restriction ..................................................13
Tilt Alarm ...................................................................13
Platform Overload Sensing System..........................14
Engine Protection Systems ......................................14
High Engine Temperature Alarm ...........................14
Low Oil Pressure Alarm .........................................15
Horn ..........................................................................15
Drive Motion Alarm ................................................... 15
Flashing Light ...........................................................15
Driving Lights ............................................................15
Platform Work Lights ................................................15
Chapter 5 – Gauges and Displays
Hour Meter................................................................17
Engine Temperature Gauge .....................................17
Ammeter ...................................................................17
Engine Air Filter Gauge ............................................17
Fuel...........................................................................17
Engine Oil .................................................................18
Hydraulic Fluid Filter Gauge ..................................... 18
Fluid Level and Temperature Gauge ........................18
Chapter 6 – Controls
Battery Disconnect Switch ........................................19
Axle Controls ............................................................19
High Range Speed Selector .....................................19
Lower Controls .........................................................19
Start Button ...........................................................20
Emergency Stop Button ........................................20
Control Selector Switch .........................................20
Ground Operation Switch ......................................20
Boom/Axle Switch .................................................20
Rotation Switch .....................................................20
Boom Elevation Switch .........................................20
Boom Extension Switch ........................................20
Boom Speed Knob ................................................20
Jib Articulation Switch ...........................................20
Platform Level Switch ............................................20
Platform Rotate Switch ..........................................21
Engine/Emergency Power Switch .........................21
Throttle Switch ......................................................21
Hydraulic System Warm-Up Switch ......................21
Circuit Breaker Reset Buttons ...............................21
Upper Controls .........................................................21
Start Switch ...........................................................22
Emergency Stop Button ........................................22
Drive/Boom Selector Switch ..................................22
Boom Joystick .......................................................22
Drive Joystick ........................................................22
Drive Range Switch ...............................................22
Jib Articulation Joystick .........................................23
Platform Level Switch ............................................23
Platform Rotate Switch ..........................................23
Boom Extend/Retract Joystick ..............................23
Engine/Emergency Power Switch .........................23
Throttle Switch ......................................................23
Horn Button ...........................................................23
TB126J – 0192117EE
Page 4
Table of Contents
Platform Foot Switch .............................................23
Machine/Generator Switch .......................................23
Driving and Platform Work Lights ............................. 23
Chapter 7 – Prestart Inspection
Operator’s Manual ....................................................25
Engine ......................................................................25
Oil Level ................................................................25
Coolant ..................................................................25
Radiator .................................................................25
Fuel Tank ...............................................................25
Fuel Line ...............................................................26
Air Filter .................................................................26
Charging System ..................................................26
Cold Weather Start Kit—Block Heater ..................26
Electrical System ...................................................... 26
Battery Fluid Level ................................................26
Battery Terminals ...................................................27
Cables and Wiring Harness ..................................27
Hydraulic System......................................................27
Fluid Level .............................................................27
Fluid Filter .............................................................27
Hoses, Tubes and Fittings .....................................27
Tires and Wheels ......................................................28
Axle/Boom Interlock..................................................28
Lower Control Station ...............................................29
Operating Controls ................................................29
Emergency Stop .................................................... 30
Emergency Power .................................................30
Envelope Management System................................30
Emergency Lowering ................................................31
Level Sensor.............................................................31
Flashing Light ...........................................................31
Sandblast Protection Kit ...........................................31
Structures .................................................................32
Weldments ............................................................32
Slide Pads .............................................................32
Wire Ropes ...........................................................32
Fasteners ..............................................................33
Upper Control Station ...............................................34
Guardrail System ..................................................34
Lanyard Anchors ...................................................34
Operating Controls ................................................34
Emergency Stop .................................................... 35
Emergency Power .................................................35
Horn ......................................................................35
AC Generator ........................................................35
Drive Motion Alarm ................................................ 35
Driving and Work Lights ........................................35
Platform Control Cover .......................................... 35
Placards and Decals.................................................35
Prestart Inspection Checklist .................................... 39
Chapter 8 – Operation
Cold Weather Start-Up .............................................41
Engine Cold Weather Start Kit ..................................41
Block Heater .......................................................... 41
Hydraulic System Cold Weather Warm-Up .............41
Hydraulic System Warm-Up Switch ......................41
Manually Warming The Hydraulic System ............42
Preparing for Operation ............................................42
Lower Controls .........................................................42
Axle Controls ............................................................42
Extending The Rear Axles .....................................43
Retracting The Rear Axles ....................................43
Upper Controls .........................................................43
Boom Operation ....................................................44
Driving and Steering .............................................. 44
Drive Speeds ......................................................... 45
Motion Warning Alarm ...........................................45
Platform Overload Sensing System..........................45
Four Wheel Drive......................................................46
High Range Speed Selector .................................. 46
AC Generator ...........................................................46
Air Line .....................................................................47
Driving Lights ............................................................47
Platform Work Lights ................................................47
Chapter 9 – Stowing and Transporting
Stowing .....................................................................49
Transporting .............................................................49
Driving ...................................................................49
Winching ...............................................................50
Hoisting .................................................................50
Securing for Transport ...........................................51
Chapter 10 – Emergency Operation
Emergency Power System .......................................53
Lower Controls ......................................................53
Upper Controls ......................................................53
Electric Emergency Bleed Down System .................54
Emergency Lowering ................................................55
Chapter 11 – Troubleshooting
Troubleshooting Chart ..............................................57
Appendix A – Glossary
Limited Warranty
TB126J – 0192117EE
Page 5
Chapter 1 – Introduction
Aerial Platform Features
The aerial platform is a boom-supported elevating work
platform used to raise personnel, tools and materials to
the workstation. The booms are raised and lowered with
hydraulic cylinders. Hydraulic motors on the drive wheels
provide power to move the aerial platform.
The standard machine includes the following features.
Four wheel drive
Foam lled tires
Extendable rear axles
High engine temperature shut down
Low oil pressure shut down
Hour meter
Ammeter
Coolant temperature gauge
Hydraulic oil level and temperature gauges
Horn
3.5 degree tilt alarm
360 degree continuous turntable rotation
180 degree platform rotation
Tie-down/Lifting lugs
76 cm x 234 cm (30″ x 92″) aluminum 272 kg (600
lb) capacity platform
Envelope Management System (EMS)
Two safety lanyard attachments
Emergency bleed down systems
Chassis jack
Platform gravity gate
Five year limited warranty
The machine is powered with the following engine:
Cummins B3.3 – Diesel
The aerial platform has been manufactured to conform
to European Directive 98/37/EC and European Standard
EN280.
Operator’s Manual
This manual provides information for safe and proper
operation of the aerial platform. Some information in
this manual refers to options that may or may not be
on the machine. Read and understand the information
in this Operator’s Manual before operating the aerial
platform on the job.
Additional copies of this manual may be ordered from
Snorkel. Supply the model and manual part number
from the front cover to assure that the correct manual
will be supplied.
All information in this manual is based on the latest
product information at the time of publication. Snorkel
reserves the right to make product changes at any time
without obligation.
Safety Alerts
A safety alert symbol is used throughout this manual
to indicate danger, warning, and caution instructions.
Follow these instructions to reduce the likelihood of
personal injury and property damage. The terms danger, warning, and caution indicate varying degrees of
personal injury or property damage that can result if the
instruction is not followed.
ADanger
Indicates an imminently hazardous situation which,
if not avoided, will result in death or serious injury.
This signal word is to be used in the most extreme
situations.
AWarning
Indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
Options
The following options may be provided on the machine.
Indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate
ACaution
injury. It may also be used to alert against unsafe
Drive motion alarm
Flashing light
Driving lights
Platform work lights – ood or halogen
Platform control cover
Platform swinging gate
Sandblast protection kit
Cold weather start kit
Hydraulic system cold weather warm-up kit
Airline to platform
AC generator – hydraulic powered, 220 V, 50Hz
practices.
Notes
Notes are used to provide special information or helpful
hints to assist in aerial platform operation, but do not
indicate a hazardous situation.
Operation
The aerial platform has built-in safety features and has
been factory tested for compliance with Snorkel specications and industry standards. However, any personnel
lifting aerial platform can be potentially dangerous in the
hands of untrained or careless operators.
TB126J – 0192117EE 1
Page 6
Chapter 1 – Introduction
AWarning
The potential for an accident increases when the
aerial platform is operated by personnel who are not
trained and authorized. Death or serious injury can
result from such accidents. Read and understand
the information in this manual and on the placards
and decals on the machine before operating the
aerial platform on the job.
Training is essential and must be performed by a
qualied person. Become procient in knowledge and
actual operation before using the aerial platform on
the job. You must be trained and authorized to perform
any functions of the aerial platform. Operation of the
aerial platform must be within the scope of the machine
specications.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regulations
and safety rules of their employer and/or any state or
federal law.
Maintenance
Every person who maintains, inspects, tests, or repairs
the aerial platform must be qualied to do so. Following
the daily prestart inspection in this Operator’s Manual will
help keep the aerial platform in optimum working condition. Other maintenance functions must be performed
by maintenance personnel who are qualied to work on
the aerial platform.
If it becomes necessary to weld aerial platform components as a method of repair, take all precautions to
prevent damage to electronic circuitry and devices on
the machine. This includes, but may not be limited to,
disconnecting battery cables and electronic devices.
Do not modify this aerial platform without prior written consent of the Snorkel Engineering Department.
Modication may void the warranty, adversely affect
stability, or affect the operational characteristics of the
aerial platform.
Owner and User Responsibilities
All owners and users of the aerial platform must read,
understand, and comply with all applicable regulations.
Ultimate compliance to national safety regulations is the
responsibility of the user and their employer.
Additional Information
For additional information contact your local dealer or
Snorkel at:
Snorkel International
P.O. Box 1160
St. Joseph, MO 64502-1160 USA
785-989-3000
http://www.snorkelusa.com
ACaution
Welding current can be very intense. Damage to
electronic components can result. Connect the
ground clamp as close as possible to the area being welded. Disconnect battery cables and any microprocessors and engine control modules before
welding on the machine.
2 TB126J – 0192117EE
Page 7
Component Identication
Chapter 2 – Specications
Upper Controls
Fuel Tank
Right Side
Operator’s
Manual
Chassis
Hydraulic Fluid Tank
and Filter
Steer Wheels
Emergency
Lowering Valve
Lower
Controls
Wiring Box
Steer Wheels
Engine
Batteries
Main Boom
Battery Disconnect
Switch
Second Intermediate
Boom
Left Side
First Intermediate
Boom
Tip Boom
Platform
Jib
Platform Foot Switch
TB126J – 0192117EE 3
Page 8
Chapter 2 – Specications
Working Envelope
Meters
(Feet)
39.6
(130)
36.6
(120)
33.5
(110)
30.5
(100)
27.4
(90)
24.4
(80)
21.3
(70)
18.3
(60)
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3
(10)
0
3
(10)
21.3
(70)
4 TB126J – 0192117EE
18.3
(60)
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3.0
(10)
0
3.0
(10)
6.1
(20)
Page 9
General Specications
Chapter 2 – Specications
Aerial Platform
Working height 40.2 m (132′)
Maximum platform height 38.4 m (126′)
Horizontal reach 19.2 m (63′)
Main boom
Articulation -1° to +75°
Extension 7.9 m (26′)
Turntable rotation 360° continuous
Turning radius, inside
Axles extended 5.8 m (19′)
Wheelbase 3.7 m (12′)
Ground clearance 33 cm (13″)
Maximum wheel load 9571 kg (21,100 lbs)
Maximum ground pressure 628 kPa (91 psi)
Weight, EVW
Approximate 19,000 kg (41,800 lbs)
Width
Axles retracted 2.6 m (8′ 6″)
Axles extended 3.9 m (12′ 10″)
Stowed length 13.0 m (42′ 9″)
Stowed height 3.1 m (10′ 4″)
Platform
Dimensions
Aluminum 76 cm x 234 cm (30″ x 92″)
Rated work load
Aluminum 76 cm x 234 cm 272 kg (600 lb)
Rotation 180 degrees
Maximum number of occupants 2 people
Optional AC generator 220 VAC
Function Speed
Turntable rotation
Booms retracted 165 seconds minimum
Booms extended 325 seconds minimum
Main boom
Up
Booms retracted 75 to 95 seconds
Booms extended 165 to 180 seconds
Down
Booms retracted 75 to 95 seconds
Booms extended 165 to 180 seconds
Extend 80 to 100 seconds
Retract 80 to 100 seconds
Jib Boom
Up 8 to 13 seconds
Down 10 to 20 seconds
Platform rotation 16 to 20 seconds
Drive
Booms down and retracted
High speed, low torque 4.8 km/h (3.0 mph)
Mid speed, mid torque 2.4 km/h (1.5 mph)
Low speed, high torque 1.2 km/h (0.75 mph)
Booms up and/or extended
To mid elevation 1.2 km/h (0.75 mph)
Above mid elevation 0.06 m/sec (creep)
Drive System
Standard Four wheel drive
Gradeability – theoretical 42%
Tires
Foam lled 46 cm x 56 cm (18″ x 22″), 18 ply
Electrical System
Voltage 12 V DC negative chassis ground
Source Three - 12 V 550 CCA batteries
Fluid recommended distilled water
Hydraulic System
Maximum pressure
Four wheel drive 19,320 kPa (2,800 psi)
Reservoir capacity 227 l (60 US gal)
System capacity 341 l (90 US gal)
Maximum operating temperature 93°C (200°F)
Hydraulic uid recommended
Above -13°C (10°F) Mobil DTE-13M (ISO VG32)
Below -13°C (10°F) Mobil DTE-11M (ISO VG15)
Engine
Diesel Cummins B3.3
Fuel Tank Capacity
Diesel 151 l (40 US gal)
Ambient Air Temperature Operating Range
Celsius -18°C to 43°C
Fahrenheit 0°F to 110°F
Maximum Wind Speed
Gust or steady 45 km/h (28 mph)
Vibration less than 2.5 m/sec
Sound Threshold below 97 dB(A)
2
TB126J – 0192117EE 5
Page 10
Chapter 2 – Specications
Engine Specications
Engine Displacement Fuel Grade Coolant
Operating
Temperature
Diesel
ASTM No. 2D fuel with a
Cummins
B3.3
Note 1: Refer to the engine manufacturers manual for specic fuel recommendations and specications.
Note 2: Ethylene glycol or Propylene glycol may be used. Refer to the Cummins® Operation and Maintenance Manual B3.3 Series Engines
for specic coolant recommendations and specications.
Note 3: Refer to the engine manufacturers manual for specic lubricating oil recommendations and specications.
3.26 liter
(199 cu. in.)
minimum Cetane number of
40.1 For operating temperatures below 0°C (32°F) use
winterized No. 2D.
50% Water
50% Antifreeze
60°C to 100°C
2
140°F to 212°F
Oil
Capacity
7.5 l (2 gal)
total
1.5 l (1.6 qt)
Low to High
Oil
Grade
SAE
15W-40
API:
CH4/SG
Engine Oil Viscosity
Cummins B3.3
3
6 TB126J – 0192117EE
Page 11
Chapter 3 – Safety
Denotes
prohibited
zone
Knowledge of the information in this manual, and
proper training, provide a basis for safely operating the
aerial platform. Know the location of all controls and
how they operate to act quickly and responsibly in an
emergency.
Safety devices reduce the likelihood of an accident.
Never disable, modify, or ignore any safety device.
Safety alerts in this manual indicate situations where
accidents may occur.
If any malfunction, hazard or potentially unsafe condition relating to capacity, intended use, or safe operation
is suspected, stop aerial platform operation and seek
assistance.
The operator bears ultimate responsibility for following
all manufacturer’s instructions and warnings, regulations
and safety rules of their employer and/or any state or
federal law.
Electrocution Hazards
The aerial platform is made of metal components and is
not insulated. Regard all conductors as energized. Do
not operate outside during a thunderstorm.
Minimum Safe Approach Distance
Minimum safe approach distances to energized power
lines and their associated parts must be observed while
operating the aerial platform.
ADanger
The aerial platform is not electrically insulated.
Death or serious injury can result from contact
with, or inadequate clearance from, an energized
conductor. Do not go closer than the minimum safe
approach distance as dened by ANSI or national
safety regulations.
ANSI publications dene minimum distances that must
be observed when working near bus bars and energized
power lines. Table 1 and Figure 3 are reprinted courtesy
of Scaffold Industry Association, ANSI/SIA A92.5.
Voltage Range
(Phase to Phase)
0 to 300V Avoid Contact
Over 300V to 50kV 10 3.05
Over 50kV to 200kV 15 4.60
Over 200kV to 350Kv 20 6.10
Over 350kV to 500kV 25 7.62
Over 500kV to 750kV 35 10.67
Over 750kV to 1000kV 45 13.72
Table 1 – Minimum Safe Approach Distance
Minimum Safe Approach Distance
Feet Meters
Figure 3 – Minimum Safe Approach Distance
TB126J – 0192117EE 7
Page 12
Chapter 3 – Safety
Prestart Inspection
Perform a prestart inspection before each shift as
described in Chapter 7. Do not use the aerial platform
on the job unless you are trained and authorized to do
so.
Work Place Inspection and Practices
Do not use the aerial platform as a ground connection
when welding. The welding ground clamp must be attached to the same structure that is being welded. Elec-
trical current ow can be very intense, causing serious
internal damage to some components.
Inspect the area before and during aerial platform use.
The following are some potential hazards that may be
in the work place.
• Debris
• Slopes
• Drop-offs or holes
• Bumps and oor obstructions
• Overhead obstructions
• Unauthorized persons
• High voltage conductors
• Wind and weather conditions
• Inadequate surface and support to withstand load
forces applied by the aerial platform in all operating
congurations
Before using the aerial platform in any hazardous (clas-
sied) location, make certain it is approved and of the
type required for use in that particular location.
Always look in the direction of movement. Drive with care
and at speeds compatible with the work place conditions. Use caution when driving over rough ground, on
slopes and when turning. Do not engage in any form of
horseplay or permit riders any place other than in the
platform.
Secure all accessories, containers, tools and other
materials in the platform to prevent them from accidentally falling or being kicked off the platform. Remove all
objects that do not belong in or on the aerial platform.
Never steady the platform by positioning it against another platform.
AWarning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury can result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
Do not operate the aerial platform if it is damaged or not
functioning properly. Qualied maintenance personnel
must correct the problem before putting the aerial platform back into service.
Operation
Use three points of support when entering or exiting
the platform. For example, use two hands and one foot
when climbing into the platform.
Know and understand the job site trafc-ow patterns
and obey the agmen, road signs and signals.
While operating the aerial platform, a good safety
practice is to have qualied personnel in the immediate
work area to:
• Help in case of an emergency
• Operate emergency controls as required
• Watch for loss of control by platform operator
• Warn the operator of any obstructions or hazards
that may not be obvious to them
• Watch for soft terrain, sloping surfaces, drop-offs,
etc. where stability could be jeopardized
• Watch for bystanders and never allow anyone to be
under, or to reach through the booms while operating the aerial platform
ADanger
Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components, buildings,
structures or other obstacles. Make sure there is
sufcient clearance around the machine before moving the chassis, booms, or platform. Allow sufcient
room and time to stop movement to avoid contact
with structures or other hazards.
Never cover the platform oor grating or otherwise obstruct your view below. Make sure the area below the
platform is free of personnel before lowering.
Keep both feet positioned rmly on the platform oor.
Operate the controls slowly and deliberately to avoid
jerky and erratic operation. Always stop the controls in
neutral before going in the opposite direction.
Do not dismount while the aerial platform is in motion
or jump off the platform.
Properly stow the aerial platform and secure it against
unauthorized operation at the end of each work day,
before transporting, or if it is left unattended.
Tip-Over and Falling Hazards
Operate the aerial platform only on a rm, at, level
surface capable of withstanding all load forces imposed
by the aerial platform in all operating conditions. Refer to
the General Specications chart for the maximum wheel
load and ground pressure. Raise the booms only when
the aerial platform is on level ground.
ADanger
8 TB126J – 0192117EE
Page 13
Chapter 3 – Safety
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over
accident. Do not drive or position the aerial platform
for elevated use near any drop-off, hole, slope, soft
or uneven ground, or other tip-over hazard. Do not
raise the boom in winds above 45 km/h (28 mph).
All platform occupants must wear a fall restraint device
connected to a lanyard anchor point.
It is best not to transfer from the platform to another
structure or from the structure to the platform, unless
that is the safest way to do the job. Judge each situation
separately taking the work environment into account. If
it is necessary to transfer from the platform to another
structure the following guidelines apply:
1. Where possible, place the platform over a roof or
walking structure to do the transfer.
2. Transfer your anchorage from one structure to the
other before stepping across.
3. Remember that you might be transferring to a structure where personal fall arrest is required.
4. Use the platform entrance, do not climb over or
through the guardrails.
Take care to prevent rope, electrical cords, and hoses,
etc., from becoming caught in or on the aerial platform.
If the platform or booms becomes caught on an adjacent structure or other obstacle and is prevented from
normal motion, reverse the control to free the platform.
If control reversal does not free the platform, evacuate
the platform before attempting to free it.
Electrical System
Charge the batteries in a well-ventilated area free of
ame, sparks, or other hazards that might cause re
or explosion.
Do not operate any of the aerial platform functions while
the battery charger is plugged in.
AWarning
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury can
result from a chemical explosion. Do not smoke or
permit open ames or sparks when checking the
batteries.
Battery acid can damage the skin and eyes. Serious
infection or reaction can result if medical treatment
is not given immediately. Wear face and eye protection when working near the batteries.
Do not operate the aerial platform in windy or gusty
conditions. Do not add anything to the aerial platform
that will increase the wind loading such as billboards,
banners, ags, etc.
Never operate the aerial platform without all parts of the
guardrail system in place and the gate closed. Make
sure that all protective guards, cowlings, and doors are
securely fastened.
Do not exceed the platform capacity as indicated on
the platform rating placard on the platform. Do not carry
loads that extend beyond the platform guardrails without
prior written consent from Snorkel.
Do not operate the aerial platform from trucks, trail-
ers, railway cars, oating vessels, scaffolds, or similar
equipment unless the application is approved in writing
by Snorkel.
Do not use the aerial platform as a crane, hoist, jack or
for any purpose other than to position personnel, tools
and materials.
Do not climb on the guardrails or use ladders, planks,
or other devices to extend or increase the work position
from the platform.
Batteries contain sulfuric acid that can damage your eyes
or skin on contact. Wear a face shield, rubber gloves,
and protective clothing when working around batteries.
If acid contacts your eyes, ush immediately with clear
water and get medical attention. If acid contacts your
skin, wash off immediately with clear water.
Hydraulic System
The hydraulic system contains hoses with hydraulic uid
under pressure.
ADanger
Hydraulic uid escaping under pressure can have
enough force to inject uid into the esh. Serious
infection or reaction can result if medical treatment
is not given immediately. In case of injury by escap-
ing hydraulic uid, seek medical attention at once.
Do not place your hand or any part of your body in front
of escaping hydraulic uid. Use a piece of cardboard or
wood to search for hydraulic leaks.
Engine and Fuel Handling Precautions
Refer to the engine manufacturer’s Operator’s Manual
for complete information on safe engine operation,
maintenance and specications.
TB126J – 0192117EE 9
Page 14
Chapter 3 – Safety
ADanger
Engine exhaust contains carbon monoxide, a poisonous gas that is invisible and odorless. Breathing
engine exhaust fumes can cause death or serious
illness. Do not run the engine in an enclosed area
or indoors without adequate ventilation.
Be careful not to run the diesel fuel tank empty. Bleed
the fuel system if air enters the lines between the tank
and the injection pump.
Allow the engine to return to idle before shutting the
engine off.
Do not smoke or permit open ames while fueling or
near fueling operations.
Never remove the fuel cap or ll the fuel tank while the
engine is running or hot. Never allow fuel to spill on hot
machine components.
Maintain control of the fuel ller nozzle when lling the
tank. Spilled fuel is a potential re hazard.
Do not overll the fuel tank. Allow room for expansion.
Tighten the fuel tank cap securely. If the fuel cap is lost,
replace it with an approved cap from Snorkel. Use of a
non-approved cap without proper venting may result in
pressurization of the tank.
Never use fuel for cleaning purposes.
For diesel engines, use the correct fuel grade for the
operating season.
ACaution
Engine coolant escaping under pressure can cause
serious burns. Shut the engine off and let it cool
before removing the radiator cap.
Let the engine and radiator cool before adding coolant.
Placards and Decals
The aerial platform is equipped with placards and decals that provide instruction for operation and accident
prevention. Do not operate the aerial platform if any
placards or decals are missing or not legible.
Clean up spilled fuel immediately.
10 TB126J – 0192117EE
Page 15
Chapter 4 – Safety Devices
This aerial work platform is manufactured with safety
devices, placards, and decals to reduce the likelihood of
an accident. For the safety of all personnel, do not disable, modify or ignore any safety device. Safety devices
are included in the daily prestart inspection.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
If any safety devices are defective, remove the aerial
platform from service until qualied maintenance personnel can make repairs.
Emergency Stop Controls
There is an emergency stop control at the lower and
upper controls.
At the lower controls, the emergency stop is a two-position push button (refer to Figure 4.1). Push the emergency stop button in to disconnect power to all control
circuits. Pull the button out to restore power.
Engine/Emergency
Power Switch
Emergency
Stop Button
At the upper controls, the emergency stop is a two-position push button (refer to Figure 4.2).
Emergency
Stop Button
Engine/Emergency
Power Switch
Figure 4.2 – Upper Controls
Push the emergency stop button in to disconnect power
to the upper control circuits. Pull the button out to restore
power.
Emergency Power System
The emergency power system includes a backup pump,
motor, and battery. Use this system to operate the boom
and turntable functions to lower the platform if the main
power system fails due to engine or pump failure.
Hold the emergency power switch (refer to Figures
4.1 and 4.2) down to activate the emergency power
system.
The length of time the pump can be operated depends
on the capacity of the battery.
Emergency Bleed Down System
The emergency bleed down system may be used to
lower the booms if the engine will not start and the
emergency power system will not work. The emergency
bleed down system is composed of two pairs of toggle
switches. (Refer to Figures 4.3 and 4.4) One pair of
Ground
Operation Switch
Figure 4.1 – Lower Controls
Note
The lower controls override the upper controls. If the
upper control emergency stop button is engaged, the
lower controls can still be used to operate the aerial
platform.
TB126J – 0192117EE 11
switches is located on either side of the wiring box. The
second pair of switches is located on either side of the
upper control box.
Emergency Bleed
Down Switches
Figure 4.3 – Wiring Box
Page 16
Chapter 4 – Safety Devices
Emergency Bleed
Down Switch
Ground Operation Switch
The ground operation switch (refer to Figure 4.1) prevents boom and platform movement if a control switch
on the lower control panel is accidentally moved.
Hold the switch up to operate the machine from the
lower controls.
Platform Foot Switch
Stepping down on the platform foot switch (refer to
Figure 4.6) activates the upper controls.
Top Rail
Figure 4.4 – Right Side of Upper Controls
Emergency Lowering Knob
The emergency lowering knob may be used to lower
the booms if the engine will not start and the emergency power system and bleed down system will not
work. The knob is located at the base end of the main
boom lift cylinder (refer to Figure 4.5), under the center
of the turntable. It is accessible from the underside of
the turntable.
Emergency
Lowering Knob
Gravity
Gate
Platform Foot
Switch
Lanyard
Anchors
Mid Rail
Toeboard
Figure 4.6 – Platform
The foot switch must be engaged and a control must be
moved to operate the boom, drive and/or platform from
the upper controls.
Guardrails
The guardrail system includes a top rail, mid rail and
toeboards around the sides of the platform (refer to
Figure 4.6).
A gravity gate or an optional swinging gate (refer to
Figure 4.7) allows for access to the platform.
Figure 4.5 – Emergency Lowering Knob
The knob may be turned to open the cylinder bleed down
valve for emergency lowering.
Axle/Boom Interlock
The rear axles on the chassis extend to help stabilize
the machine when the boom is raised or extended.
The axle/boom interlock prevents the boom from extending and from raising above horizontal if the rear axles
are not properly extended and locked in position.
Figure 4.7 – Optional Swinging Gate
12 TB126J – 0192117EE
Page 17
Chapter 4 – Safety Devices
The gates close automatically after entering or exiting
the platform. The gate is part of the guardrail system and
must be securely fastened after entering the platform.
Lanyard Anchors
Two lanyard anchors for fall restraint anchorage are
provided below the upper controls at the front of the
platform (refer to Figure 4.6).
Note
The lanyard anchors are not for lifting or tying the machine down.
All personnel in the platform must connect their fall
restraint device to a lanyard anchor before raising the
platform. Do not use the aerial platform for personal fall
arrest anchorage.
Envelope Management System
The Envelope Management System (EMS) restricts the
movement of the platform to keep it within safe work
parameters. There are EMS indicator lights on the upper
and lower controls (refer to Figure 4.8).
The red EMS light/button will only be lit in the case of a
malfunction with the EMS system. The red button/light
will ash and beep in quick pulses then pause and repeat if the primary envelope has been exceeded. When
the red button/light emits a continuous series of beeps
and ashes, the primary and backup envelopes have
been exceeded. The display of a solid red light, with
solid tone, is indicative of system or electrical failures or
further extension beyond the backup envelope. If, after
resetting the EMS system, the solid red light reoccurs, a
Snorkel authorized service provider must be contacted
before any further operation.
When the machine is rst started or after the EMS has
been reset, there will be a 7 to 10 second delay before
the EMS system will be operational. During this delay
period the green light will not be on and the EMS functions will not be operational.
Height Restriction
The EMS has a height restriction feature which allows
the machine owner to limit the maximum height the platform will reach. The maximum height display is located
on the wiring box on the left side of the machine (refer
to Figure 4.9). If the height has been restricted the word
LIMIT will be displayed in the lower right corner.
EMS Indicator
Lights
Green
White
Red
Green
White
Red
EMS Indicator
Lights
Figure 4.8 – EMS Indicator Lights
A ashing green EMS light indicates the machine is in
need of calibration. A Snorkel authorized service provider must be contacted before any further operation. A
solid green light indicates system operation is normal.
The white EMS light will begin to ash as the platform
approaches the edge of the working envelope. A solid
white light indicates the edge of the working envelope
has been reached. In the advent of a solid white light,
the EMS will restrict one or more types of movement to
keep the platform within the working envelope.
Limit Indicator
Figure 4.9 – Wiring Box
Tilt Alarm
If the aerial platform chassis is out of level more than
3.5 degrees when the main boom is raised or extended,
an alarm will sound. The tilt alarm is located under the
upper control panel.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over
accident. Do not drive or position the aerial platform
for elevated use near any drop-off, hole, slope, soft
or uneven ground, or other tip-over hazard.
When the tilt alarm sounds, completely retract and lower
the main boom and then drive to a level surface. The tilt
alarm is for added protection and does not justify operat-
ing on anything other than rm, at, level surfaces.
TB126J – 0192117EE 13
Page 18
Chapter 4 – Safety Devices
Platform Overload Sensing System
All functions are stopped from the upper and lower
controls, when the platform overload limit is exceeded.
The horn will sound intermittently and the red overload
light (refer to Figure 4.10) will blink until the excess load
is removed from the platform. At that time, the machine
functions are again operational.
Platform
Overload Light
Figure 4.10 – Upper Controls
If the platform becomes signicantly overloaded, or if
an upward force on the platform exceeds approximately
445 N (100 lb), the system will enter into error mode,
stopping all functions from the upper and lower controls.
The horn will then sound constantly and the overload
light will stay illuminated at the upper and lower controls
(refer to Figures 4.10 and 4.11).
Engine
Temperature
Gauge
The system will remain in error mode until the excess
load is removed from the platform and the emergency
stop button or start switch is cycled off and back on,
resetting the system. At that time, the machine functions
are operational.
ACaution
The emergency power system is for emergency
lowering and stowing only. The length of time the
pump can be operated depends on the capacity
of the battery. Do not use this system for normal
operation.
If the platform overload sensing system is tripped while
operating the machine or if the system is in error mode
and can not be reset, the emergency power system
may still be used for emergency machine operation from
either the lower or upper controls.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a
tip-over accident. Do not exceed the capacity values
indicated on the platform rating placard.
The overload sensing system is not active when the
machine is being driven with the booms in the stowed
position. This allows the machine to be driven without
the system sensing an overload due to rough ground
conditions.
To eliminate repeated tripping of the system during ma-
chine operation, there is a ve second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal
and fully retracted.
• removing excess load from the platform.
Engine Protection Systems
A light in the emergency stop button will illuminate to
warn against high engine temperature.
The engine will shutdown if the operating temperature
exceeds a preset level or if the oil pressure is too low for
Platform
Overload Light
Figure 4.11 – Lower Control Panel
14 TB126J – 0192117EE
safe operation. An engine temperature gauge is on the
top of the lower control panel (refer to Figure 4.11).
High Engine Temperature Alarm
If the coolant exceeds the engine operating temperature,
a light in the emergency stop button will illuminate and
the engine will shut off.
Do not restart the engine until the condition that caused
the overheating has been corrected.
Page 19
Chapter 4 – Safety Devices
Low Oil Pressure Alarm
The low pressure oil alarm sounds when the engine oil
pressure is near the lower limit for safe engine operation.
If the alarm sounds, lower the platform to the ground
and then turn the engine off. Do not restart the engine
until the condition that caused the low oil pressure has
been corrected.
If the engine oil pressure falls below a safe operating
value the engine will shut off. The engine can be restarted with low oil pressure, but it will only run a few
seconds before it shuts off again.
Horn
The horn may be used to warn personnel on the ground.
The horn button is on the right side of the upper control
panel (refer to Figure 4.12). The horn is operational when
the emergency stop button and the start switches are
both on at the lower and the upper controls.
Horn Button
Figure 4.12 – Upper Control Panel Front
Driving Lights
Optional headlights and blinking tail lights may be installed on the machine. The headlights are located on
the top of the front cowling. The tail lights are mounted
on the sides of the rear cowling.
Driving lights help improve visibility while driving the
aerial platform and help others see it too. Driving lights
are not for driving on public roadways.
Platform Work Lights
Optional platform work lights may be located on the top
rail of the platform (refer to Figure 4.14), one on each
side of the upper control panel.
Platform Work
Lights
Drive Motion Alarm
An optional drive motion alarm may be provided on the
machine. When the drive/steer control is moved out of
neutral the alarm sounds, in short beeps, to warn personnel in the work area to stand clear.
Flashing Light
Optional amber ashing lights may be located on the
top rear of the cowling, on either side of the extension
cylinder. The ashing lights warn personnel that the
aerial platform is in the area.
Flashing Lights
Figure 4.14 – Platform Work Light
Use the platform lights to improve visibility while working aloft in dimly lit areas. Do not use the platform work
lights to drive on public roadways.
Figure 4.13 – Flashing Lights
The lights ash at about one ash per second when the
engine is running.
TB126J – 0192117EE 15
Page 20
Chapter 4 – Safety Devices
16 TB126J – 0192117EE
Page 21
Chapter 5 – Gauges and Displays
The aerial platform is equipped with several gauges to
monitor the condition of the machine before and during
operation.
Hour Meter
The hour meter is located on the lower control panel
(refer to Figure 5.1). It measures the accumulated engine
operating time.
Engine
Temperature
Ammeter
Gauge
Engine Air Filter Gauge
The air lter gauge (refer to Figure 5.2) is located above
the lower control panel. The gauge measures the air
pressure between the intake manifold and the air lter.
Air Filter Gauge
Reset Button
Figure 5.2 – Air Filter Gauge
The yellow indicator disk inside the sight glass stays at
its highest level when the engine is turned off.
When the yellow indicator disk reaches the red area,
it’s time to change the lter element. After changing the
lter, press the reset button to reset the indicator disk
to the bottom of the sight glass.
Hour Meter
Figure 5.1 – Lower Controls
Engine Temperature Gauge
The temperature gauge is located on the lower control
panel (refer to Figure 5.1). The gauge displays the
temperature of the water and antifreeze mixture in the
engine block.
Ammeter
The ammeter is located on the lower control panel (refer
to Figure 5.1). The ammeter displays the level of current
ow from the alternator to the batteries.
After the engine has been running for a few minutes
under normal operating conditions, the ammeter gauge
indicator should read approximately “0.”
Fuel
The fuel tank is translucent. The amount of fuel in the
tank can be gauged by raising the door on the right
rear of the machine (refer to Figure 5.3) and looking at
the tank.
Fuel Tank
Figure 5.3 – Fuel Tank
Note
Do not run a diesel fuel tank empty. Air in the fuel line
makes the engine hard to start.
TB126J – 0192117EE 17
Page 22
Chapter 5 – Gauges and Displays
Engine Oil
The engine oil level is measured with a dipstick. The
dipstick is the only way to accurately determine the
engine oil level. The engine oil level should always be
between the add and full marks on the dipstick.
Hydraulic Fluid Filter Gauge
The uid lter gauge (refer to Figure 5.4) is located on
the return line lter on top the reservoir. The reservoir is
behind the door on the right side of the turntable. Dur-
ing high pump ow situations, the gauge indicates the
condition of the lter. When the needle on the gauge is
in the red zone, it is time to change the lter.
Filter Gauge
Fluid Level and Temperature Gauge
A gauge on the left end of the reservoir displays the
level and temperature of the hydraulic uid (refer to
Figure 5.5).
Fluid Level and
Temperature Gauge
Figure 5.5 – Hydraulic Fluid Gauge
If the temperature rises above 93°C (200°F) stop ma-
chine operation and let the uid cool before resuming
operation.
Figure 5.4 – Hydraulic Fluid Filter Gauge
18 TB126J – 0192117EE
Page 23
Chapter 6 – Controls
ADanger
Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components, buildings,
structures, or other obstacles. Make sure all personnel stand clear while operating the aerial platform.
Controls to position the platform are located on the lower
control panel on the turntable and on the upper control
panel in the platform. Drive controls are located on the
upper control panel only.
Jack Lever
Axle Lever
Battery Disconnect Switch
The battery disconnect is located behind the door on
the left side of the turntable above the wiring box (refer
to Figure 6.1).
Battery Disconnect Switch
Figure 6.1 – Battery Disconnect Switch
The battery disconnect removes electrical power from all
electrically controlled functions when in the off position.
Place the switch in the on position to electrically connect
the battery to the electrical system.
ACaution
Only authorized personnel should operate the aerial
platform. Unqualied personnel may cause injury
to coworkers or property damage. Lock the battery
disconnect switch in the off position before leaving
the aerial platform unattended.
Turn the battery disconnect switch off to prevent unauthorized use of the aerial platform.
Axle Controls
The axle controls (refer to Figure 6.2) are located on the
top of the chassis at the rear of the machine.
One of the controls operates the jack to raise and lower
the chassis and the other operates the axle extend and
retract functions.
Figure 6.2 – Axle Controls
High Range Speed Selector
The high range speed selector (refer to Figure 6.3) is
located on the top of the chassis near the front of the
machine.
High Range Speed
Selector Valve
Figure 6.3 – Top of Chassis
This valve works in conjunction with the drive range
switch on the upper controls to determine the maximum
drive speed. Lock the knob in the upward position for
maximum drive speed.
Lower Controls
The lower controls (refer to Figure 6.4) are located on the
right side of the turntable. Boom, turntable and platform
functions can be operated from the lower controls. The
following are located on the lower control panel.
Start button
Emergency stop button
Controls selector switch
Ground operation switch
Turntable rotation switch
Main boom elevation switch
Boom extension switch
Boom speed knob
Jib articulation switch
Platform level switch
Platform rotate switch
Engine/emergency power switch
Throttle switch
Hydraulic warm-up switch (option)
TB126J – 0192117EE 19
Page 24
Chapter 6 – Controls
Boom
Speed
Engine/
Emergency
Power
Emergency
Stop
Ground
Operation
Boom
Elevation
Jib
Articulation
Platform
Level
Boom/Axle
Throttle
Rotation
Boom
Extension
Platform
Rotate
Controls
Selector
Start
Figure 6.4 – Lower Controls
Start Button
Press and hold the start button until the engine starts,
then release it. If the engine dies, the controls selector
switch must be turned to off, then back to the lower
controls position, before the engine can be restarted.
Emergency Stop Button
The emergency stop is a two-position, red push button.
Push the button in to disconnect power to all control
circuits. Pull the button out to restore power.
Control Selector Switch
Use the control switch to select between off, lower
control and upper control operation. Insert the key in
the switch and turn the switch to the upper controls
position to operate the aerial platform from the upper
controls and in the lower controls position for lower
controls operation.
Boom/Axle Switch
The boom/axle switch must be up, in the boom position
to operate the boom functions.
Place the switch down, in the axle position, to operate
the controls for the jack and axles.
Rotation Switch
The rotation switch is used to rotate the turntable in a
clockwise or counterclockwise direction. The switch is
spring returned to the center off position.
Hold the switch to the right to rotate the turntable counterclockwise. Hold the switch to the left to rotate the
turntable clockwise.
Boom Elevation Switch
The boom elevation switch is used to raise or lower the
main boom. The switch is spring returned to the center
off position.
Hold the switch up to raise the main boom. Hold the
switch down to lower the main boom.
Boom Extension Switch
The boom extension switch is used to extend or retract
the booms. The switch is spring returned to the center
off position.
Hold the switch to the left to extend the booms. Hold the
switch to the right to retract the booms.
Boom Speed Knob
Use the boom speed control knob to control the speed
of the following boom functions.
• Main boom raise/lower
• Boom extend/retract
• Turntable rotation clockwise/counterclockwise
Set the knob to slow when beginning a boom movement.
The speed may be increased by slowly rotating the knob
toward fast. For smooth operation, rotate the knob to
slow when ending boom movement.
Jib Articulation Switch
The jib switch is used to raise or lower the jib. The switch
is spring returned to the center off position.
Hold the switch up to raise the jib. Hold the switch down
to lower the jib.
An alarm sounds when the switch is turned to on to warn
others that the machine engine is being started.
Ground Operation Switch
Hold the switch upward continually to operate the
machine from the lower controls. The engine speed
increases when the switch is held upward. This switch
is spring returned to the off position.
20 TB126J – 0192117EE
Platform Level Switch
The platform level switch is used to level the platform
oor with respect to the ground. The switch is spring
returned to the center off position.
Hold the switch up to tilt the platform oor upward or
away from the ground. Hold the switch down to tilt the
platform oor downward or toward the ground.
Page 25
Chapter 6 – Controls
Platform Rotate Switch
The platform rotator switch is used to rotate the platform
relative to the end of the tip boom. The switch is spring
returned to the center off position.
Hold the switch to the right to rotate the platform counterclockwise. Hold the switch to the left to rotate the
platform clockwise.
Engine/Emergency Power Switch
Hold the engine/emergency power switch down to operate aerial platform functions using the emergency power
system. Release the switch to disengage the emergency
power system.
Note
The emergency power system is for lowering the platform during an emergency and is not intended for normal
machine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Throttle Switch
The throttle switch (refer to Figure 6.4) is used to set the
engine throttle speed in either low or high idle.
Place the switch in the low position before starting the
engine and in the high position for machine operation
and for engine and/or hydraulic system warm-up.
Circuit Breaker Reset Buttons
The lower control panel electrical system has a circuit
breaker for the lift/swing, throttle, run and main circuits
(refer to Figure 6.5). There is a reset button for the circuit
breaker on the bottom of the lower control panel.
Circuit Breaker Reset Buttons
Figure 6.5 – Lower Controls
The upper control panel (refer to Figure 6.6) has a circuit breaker for the lift, swing, main and drive circuits.
The circuit breaker reset buttons are on the front of the
upper control panel.
Circuit Breaker Reset Buttons
Start
Horn
The engine has a two speed throttle operation from the
lower controls. When the throttle switch is in the low position the engine is at idle. Placing the switch in the high
position increases the engine speed to mid-range.
Placing the ground controls switch in the on position also
increases the engine speed to mid-range.
Hydraulic System Warm-Up Switch
Some units may have an optional hydraulic uid warm-
up system. This system may be used to warm the
hydraulic uid when the ambient temperature is below
0°C (32°F) and boom movement is sluggish because
of cold uid.
There is a toggle switch for the warm-up system on the
lower control panel and one on the left side of the upper
control panel.
The engine must be running and the switch used to turn
the system on, must be at the same location that the engine was started. For example, if the engine was started
from the lower controls, the warm-up switch at the lower
controls must be used for the system to operate.
Machine functions are not operational while using the
hydraulic warm-up system.
Figure 6.6 – Upper Control Panel Front
The circuit breakers protect the electrical wiring and
components from electrical overload in case of a short
circuit or other fault.
ACaution
A tripped circuit breaker indicates a malfunction in
the electrical system. Component damage can result
if the cause of the malfunction is not corrected. Do
not operate the aerial platform if the circuit breaker
trips repeatedly.
Push the button to reset the circuit breaker.
Upper Controls
The upper controls (refer to Figure 6.7) are located on
the control panel at the platform. Boom, platform and
drive functions can be operated from the upper controls.
The following controls are located on the upper control
panel.
Start switch
Emergency stop button
Drive/boom selector switch
Boom joystick
Drive joystick
Drive range switch
TB126J – 0192117EE 21
Page 26
Chapter 6 – Controls
Jib articulation switch
Platform level switch
Platform rotate switch
Boom extend/retract joystick
Engine/emergency power switch
Throttle switch
Engine/
Emergency
Power
Drive/
Boom
Boom
Joystick
Emergency
Stop
Jib
Articulation
Figure 6.7 – Upper Control Panel Top
Platform
Rotate
Throttle
Boom
Extension
Drive Range
Platform
Level
Drive
Joystick
Push the emergency stop button in when the upper
controls are not in use to protect against unintentional
operation.
Drive/Boom Selector Switch
Place the drive/boom selector switch (refer to Figure 6.7)
in the drive position to drive the aerial platform.
Place the drive/boom selector switch in the boom position to operate the boom functions.
Note
Boom and drive functions can not be operated at the
same time.
Boom Joystick
The boom joystick is used to raise and lower the main
boom and to rotate the turntable. The boom and turntable functions may be operated simultaneously.
Note
The distance the joystick is moved is proportional to the
speed of the function.
Start Switch
The engine can be started from the platform using the
anti-restart master switch on the front of the upper control panel (refer to Figure 6.6).
This switch is similar to an automobile ignition switch.
Turn the switch to start until the engine starts, then
release it to on. If the engine dies, the switch must be
turned to off before it can be turned back to start.
An alarm sounds when the switch is turned on to warn
others that the machine engine is being started.
Note
On some machines it may be necessary to pause about
three seconds in the on position before going to start so
the starter can engage.
Turn the switch to off to turn the engine off and save
fuel if the platform is to stay in a particular position for
a long time.
Emergency Stop Button
The emergency stop is a two-position, red push button
on the top of the upper control panel (refer to Figure
6.7). Push the button in to disconnect power to all control circuits at the upper controls. Pull the button out to
restore power.
Note
The lower controls override the upper controls. If the
upper control emergency stop button is engaged the
lower controls can still be used to operate the aerial
platform.
Hold the joystick forward to raise the main boom and
backward to lower the boom.
Hold the joystick to the right to rotate the turntable
counterclockwise and to the left to rotate the turntable
clockwise.
Drive Joystick
The drive joystick is used to control forward and reverse
motion of the aerial platform. It is also used to steer
the machine. The steering and drive functions may be
operated simultaneously.
Note
The distance the joystick is moved is proportional to the
speed of the function.
Hold the joystick forward to move the aerial platform
forward and backward to move in reverse as indicated
by the directional arrows on the chassis.
Hold the joystick to the right to steer the aerial platform
to the right and to the left to steer to the left as indicated
by the directional arrows on the chassis.
Note
The steering wheels are not self-centering. The machine
must be driving to steer the wheels. Set the steering
wheels straight ahead after completing a turn.
Drive Range Switch
The drive range switch has two positions to select drive
wheel operation:
• HI – high speed and low torque operation.
• LO – low speed and high torque operation.
22 TB126J – 0192117EE
Page 27
Chapter 6 – Controls
Jib Articulation Joystick
The jib joystick is used to raise or lower the jib. The
joystick is spring returned to the center off position.
Hold the joystick up to raise the jib. Hold the joystick
down to lower the jib.
Platform Level Switch
The level switch is used to level the platform oor with
respect to the ground. The switch is spring returned to
the center off position.
Hold the switch up to tilt the platform oor upward or
away from the ground. Hold the switch down to tilt the
platform oor downward or toward the ground.
Platform Rotate Switch
The platform rotate switch is used to rotate the platform
relative to the end of the tip boom. The switch is spring
returned to the center off position.
Hold the switch to the right to rotate the turntable counterclockwise. Hold the switch to the left to rotate the
turntable clockwise.
Boom Extend/Retract Joystick
The boom extend/retract joystick is used to extend or
retract the booms. The joystick is spring returned to the
center off position.
Hold the joystick forward to retract the booms and backward to extend the booms.
Placing the ground controls switch in the on position also
increases the engine speed to mid-range.
Horn Button
The horn button is on the right side of the upper control
panel. Press the button to sound the horn.
Platform Foot Switch
The upper controls are interlocked through the platform
foot switch (refer to Figure 6.8). Step down on and hold
the platform foot switch to activate the drive and boom
functions from the upper controls.
Platform Foot
Switch
Figure 6.8 – Platform
Machine/Generator Switch
The switch for the optional AC generator is located on the
front of the upper control panel. (Refer to Figure 6.9.)
Engine/Emergency Power Switch
The engine/emergency power switch is spring returned
to the engine position for aerial platform engine operation.
Hold the switch in the emergency power position to
operate aerial platform functions using the emergency
power system.
Note
The emergency power system is for lowering the platform during an emergency and is not intended for normal
machine operation.
If the engine is running, it will stop when the switch is
placed in the emergency power position.
Throttle Switch
The throttle switch (refer to Figure 6.7) is used to set the
engine throttle speed in either low or high idle.
Place the switch in the low position before starting the
engine and in the high position for machine operation
and for engine and/or hydraulic system warm-up.
The engine has a two speed throttle operation from the
lower controls. When the throttle switch is in the low position the engine is at idle. Placing the switch in the high
position increases the engine speed to mid-range.
Machine/Generator
Switch
Figure 6.9 – Upper Controls Front
With the engine running, place the switch in the generator position to provide electrical power to the electrical
outlet at the platform. Place the switch in the machine
position to turn off the generator and resume machine
operation.
Machine functions will not operate while the switch is in
the generator position.
Driving and Platform Work Lights
The control for the optional driving lights is on the back
of each light. Place the switch in the on position to operate the driving lights.
The control for the optional platform work lights is on
the back of each light.
TB126J – 0192117EE 23
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Chapter 6 – Controls
24 TB126J – 0192117EE
Page 29
Chapter 7 – Prestart Inspection
Potential service and safety problems may be detected
by inspecting the aerial platform. This chapter includes
information on properly inspecting the aerial platform
and includes a prestart inspection check list at the end
of the chapter to ensure that no areas are overlooked.
AWarning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury can result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
Perform a prestart inspection at the beginning of each
shift, before using the aerial platform on the job. The
inspection site must have a smooth and level surface.
Operator’s Manual
The manual holder is located behind the right rear cowling door (refer to Figure 7.1). Make certain it is securely
fastened in place.
Operator’s Manual Holder
Coolant
The engine is liquid cooled. The coolant reservoir is
located behind the left front cowling door (refer to Figure
7.2). When the engine is cold, there should be about 2.5
cm (1″) of coolant in the bottom of the reservoir.
Coolant Reservoir
Figure 7.2 – Coolant Reservoir
ACaution
Engine coolant escaping under pressure can cause
serious burns. Shut the engine off and let it cool
before removing the radiator cap.
Figure 7.1 – Operator’s Manual Holder
Check to see that the proper Operator’s Manual is in the
holder. The manual should be complete with all pages
intact and in readable condition.
Engine
Open the engine compartment doors on both ends, sides
and end of the machine and visually inspect the engine
and its components with the engine off.
Oil Level
Check the engine oil level before starting the engine
so the oil has drained to the pan. The proper oil level is
between the add and full marks on the dipstick.
The distance between the top and bottom dipstick marks
corresponds to about 1 l (1 quart US). Add oil, if necessary, before starting the engine.
Add coolant, if necessary, when the engine is cold and
not running. When running at operating temperature the
coolant should be at the hot level.
Radiator
Inspect the radiator hoses and clamps for wear, leakage, or damage. Make sure the hoses are not hardened,
cracked, or feel spongy. Make sure the cap is in place
and tight.
Coolant leaks are easily visible on the ground. Check
under the chassis for coolant that has leaked.
Make sure the radiator core and ventilation openings on
the cover are free of bugs, dirt, or foreign material that
might restrict airow.
Fuel Tank
Check the fuel level (refer to Figure 7.3) and add fuel if
necessary. Make sure the cap is securely fastened.
TB126J – 0192117EE 25
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Chapter 7 – Prestart Inspection
Fuel Level
Figure 7.3 – Fuel Tank
Fuel Line
Visually inspect the entire length of the fuel line. Start at
the fuel tank and trace the line to the engine inspecting
for leaks and damage.
Charging System
When the engine is running, the ammeter needle (refer
to Figure 7.4) should be to the right of “0.” Left of the
“0” is discharging.
Cold Weather Start Kit—Block Heater
If the machine is equipped with an optional engine block
heater, visually inspect the heater and power cord.
Inspect for leaks around the heater and for damage to
the power cord.
Electrical System
Electrical power is supplied from three, 550 CCA, 12 volt
batteries. the batteries are behind the door on the left
side of the turntable (refer to Figure 7.7). These batteries
supply 12 volt DC electrical power to operate the aerial
platform electrical and electrohydraulic components,
including the emergency power system.
Air Filter
The air lter gauge (refer to Figure 7.4) has an indicator
to show when the lter needs replaced.
Air Filter Gauge
Reset Button
Figure 7.4 – Lower Controls
To inspect the air lter:
1. Turn the battery disconnect switch on and close the
cowling door.
2. At the lower controls, pull the emergency stop button
outward.
3. Insert the key into the controls switch and press the
start button to turn the engine on.
4. Check the clear zone after running the engine for
30 seconds.
• If the indicator is red, replace the lter.
• If the indicator is clear, the lter is OK.
5. Shut off the engine.
Ammeter
Terminals
Caps
Figure 7.5 – Batteries
AWarning
Batteries give off hydrogen and oxygen that can
combine explosively. Death or serious injury can
result from a chemical explosion. Do not smoke or
permit open ames or sparks when checking the
batteries.
ACaution
Even with low voltage electrical systems, severe
arcing can occur. Electrical shock or component
damage can result from contact with energized
conductors. Use caution when working with any
electrical device.
The batteries are automatically charged when the engine
is running. Include the batteries when inspecting and
servicing the electrical system.
Battery Fluid Level
Remove the caps from each battery. Visually check the
battery uid level. If the level is not within 6 mm (1/4″)
of the bottom of the ller neck inside each hole, add
distilled water.
26 TB126J – 0192117EE
Page 31
Chapter 7 – Prestart Inspection
Replace the caps on the batteries. The caps must be in
place and tight during machine operation.
Battery Terminals
Check the top of the batteries, the terminals and cable
ends. They should be clean and free of corrosion. Clean
the top of the batteries if necessary. Clean the terminals
and cable ends with a wire brush or terminal cleaning
tool. All cable ends must be securely fastened to the
terminals.
Cables and Wiring Harness
Inspect all cables and wiring for wear and/or physical
damage such as loose connections, broken wires and
frayed insulation. Check the wiring in areas where a
change in routing direction may cause them to become
pinched (refer to Figure 7.6). Make sure the cables and
wires are properly routed to avoid sharp edges, pinching
and scufng.
Fluid Level
Check the hydraulic reservoir uid level with the aerial
platform stowed on a level surface. The uid level must
be between the full and add marks as viewed on the
sight glass (refer to Figure 7.7).
Full
Add
Figure 7.7 – Fluid Level Indicator
ACaution
Not all hydraulic uid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and can increase component wear. Only
use hydraulic uid as recommended.
Figure 7.6 – Cables and Wiring Harness
Hydraulic System
Hydraulic power is supplied from an engine driven variable displacement piston pump.
ADanger
Hydraulic uid escaping under pressure can have
enough force to inject uid into the esh. Serious
infection or reaction can result if medical treatment
is not given immediately. In case of injury by escap-
ing hydraulic uid, seek medical attention at once.
If necessary, remove the ller cap and add uid of the
proper type. Refer to Chapter 2 for the proper type and
grade of hydraulic uid to use. The need to regularly add
uid indicates a leak that should be corrected.
The sight glass on the reservoir has an internal thermom-
eter to measure the uid temperature. The temperature
should be less than 93°C (200°F).
Fluid Filter
Checking the condition of the hydraulic uid lter is part
of the machine maintenance schedule and should not
be performed by the operator.
Hoses, Tubes and Fittings
Inspect all hydraulic hoses, tubes and ttings for wear,
leakage or damage (refer to Figure 7.8). Make sure the
hoses are properly routed to avoid sharp edges, kinking
and scufng. Inspect the tubes for dents or other damage that may restrict uid ow. Make sure all hoses and
tubes are held rmly in their support brackets.
The hydraulic reservoir is behind the door on the right
side of the turntable. The pump is mounted on the
engine.
TB126J – 0192117EE 27
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Chapter 7 – Prestart Inspection
Figure 7.9 – Tires and Wheels
The aerial platform has foam lled tires. Foam lled tires
do not have a pressure decal or a valve core.
Inspect for large holes or cuts where foam is coming
out of the tire. Look for large imbedded objects, such
as angle iron, that can rip a tire open.
Figure 7.8 – Hoses, Tubes, and Fittings
Hydraulic uid leaks are easily visible on the ground.
Check under the chassis for uid that has leaked.
Tires and Wheels
Visually inspect the tires and wheels (refer to Figure
7.9) to make sure they are suitable for service. Check
the wheel lug nuts to see that none are missing, damaged or loose.
Punctures caused by bolts, screws or nails are not a
problem for foam lled tires.
Axle/Boom Interlock
Test for proper operation of the axle/boom interlock
system from the lower controls with no material or personnel in the platform.
With the axles retracted and the pin properly locked in
position in the top hole (refer to Figure 7.10), operate
the boom up and extend functions. The boom should
only raise to a few degrees above horizontal, at which
point it will stop. After resetting it to the original position,
extend the boom, it should only extend approximately
1 m (3′).
Pin Locked In
Top Hole
Figure 7.10 – Rear Axles Retracted
Following the instructions in Chapter 8 — Operation,
extend the rear axles but do not install the pin lock.
28 TB126J – 0192117EE
Page 33
With the axles extended and the pin out, (refer to Figure 7.11), operate the boom up and extend functions.
The boom should only raise to a few degrees above
horizontal until it stops. Reset the boom to the original
position and activate the extend function, it should only
extend approximately 1 m (3′).
Chapter 7 – Prestart Inspection
Control
Selector
Engine/
Emergency
Power
Axle
Pin
Figure 7.11 – Rear Axles Extended
Lock the pin in position in the bottom hole (refer to Figure
7.12) and extend the boom 3 m to 6 m (10 to 20 feet).
Emergency
Stop Button
Start
Button
Ground
Operation
Figure 7.13 – Lower Controls
Operating Controls
Use the following procedure to operate the machine
from the lower controls.
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop button
outward. Insert the key in the control selector switch
and turn the switch to the lower control position.
Pin Locked In
Bottom Hole
Figure 7.12 – Rear Axles Extended and Locked
Remove the pin (refer to Figure 7.15) and verify that the
jack will not lower to raise the rear axles with the pin out.
Lock the pin in position in the bottom hole.
Lower Control Station
With no personnel in the platform, test the operation
of each control from the lower controls (refer to Figure
7.13).
3. Press the start button until the engine starts, then
release.
4. Let the engine warm to operating temperature.
5. Hold the ground operation switch upward.
ADanger
Pinch points may exist between moving components. Death or serious injury can result from
becoming trapped between components, buildings, structures, or other obstacles. Make sure all
personnel stand clear of the aerial platform while
performing the prestart inspection.
6. Test the operation of each function in both directions.
Note
When checking the turntable rotation function in the
clockwise direction, the turntable will rotate toward you.
TB126J – 0192117EE 29
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Chapter 7 – Prestart Inspection
Emergency Stop
Push the emergency stop button in to turn off the engine.
The lower control functions should not operate with the
emergency stop in this position.
Emergency Power
Place the battery disconnect switch, the emergency stop
button, and the master switch in the on position.
Hold the engine/emergency power switch down and the
ground operation switch upward to operate the aerial
platform from the lower controls using the emergency
power system.
Envelope Management System
Inspect and test the EMS sensors for wear, physical
damage and proper operation (refer to Figure 7.14).
EMS Angle
Sensors
Extend Cut-out Switch
Use the following procedure to test and inspect the
EMS.
1. Turn on the ignition and start the engine.
2. From the lower controls, fully extend the boom horizontally. Ensure that no more than 5 to 8 cm (2-3′′)
of black and yellow striped tape is showing at the
end of the hose carrier. (Refer to Figure 7.15) If more
or less tape is showing, remove the machine from
service and contact a Snorkel authorized service
provider.
Secondary
Primary
EMS Angle Sensor
Connector
Length Sensor
Cables
EMS Length
Sensors
Secondary
Primary
Figure 7.14 – EMS Sensors
Figure 7.15 – Hose Carrier and Main Boom
3. Fully raise the boom.
4. Check the lower controls for a ashing green light
and check the EMS display for any error messages.
Fully lower and retract the boom. In the event of a
ashing green light or EMS error messages, remove
the machine from service and contact a Snorkel
authorized service provider.
5. From the upper controls attempt to raise and extend
the boom without depressing the foot switch. The
boom should not move and the EMS will error out
in 10 to 15 seconds. If the boom moves, or the EMS
does not error out, remove the machine from service
and contact a Snorkel authorized service provider.
6. From the lower controls, extend the boom approximately 2 m (6′) and raise the boom to approximately
30 degrees.
7. Open the manual bleed down valve. The EMS will
error out for primary and backup length and angle
sensors. If the EMS does not error out, remove the
machine from service and contact a Snorkel authorized service provider.
30 TB126J – 0192117EE
Page 35
Chapter 7 – Prestart Inspection
Emergency Lowering
The main boom can be lowered in an emergency using
the emergency lowering knob. The emergency lowering
knob is at the base of the main boom lift cylinder.
Use the following procedure to test the emergency
lowering system.
1. Use the lower controls to raise the main boom to approximately 30 degrees and extend approximately
1 m (3′).
2. Turn the engine off.
ADanger
Pinch points may exist between moving components. Death or serious injury can result from
becoming trapped between components. Stand
clear of moving components while test operating
the machine.
3. Accessing the knob from below the turntable only,
slowly turn the knob (refer to Figure 7.16) to open
the bleed down valve. The boom should slowly
lower and retract by gravity, until boom is almost
fully retracted, then it should lower only. If the boom
is extended more than a few feet and fails to retract
when lowering, remove the machine from service
and contact a Snorkel authorized service provider.
Level Sensor
Use the following procedure to test the level sensor.
1. Position the aerial platform on a smooth, at, level
surface.
2. Remove all persons and materials from the platform.
3. Start the engine and raise the main boom 10 to 20
degrees above horizontal.
4. Open the rear door on the left side of the machine
to access the level sensor (refer to Figure 7.17).
Level Sensor
Figure 7.17 – Level Sensor
Emergency
Lowering Knob
Figure 7.16 – Emergency Lowering Knob
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
4. Turn the knob to close the cylinder bleed down
valve.
5. Pull the level sensor to the side as far as possible
to activate the tilt alarm.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable or override any safety device.
6. If the alarm does not sound, remove the machine
from service until the problem is corrected.
7. Lower the main boom.
Flashing Light
If the machine is equipped with an optional ashing light,
visually check to see that it ashes. The light should
ash when the engine is running.
Sandblast Protection Kit
The optional sandblast protection kit protects the cylinders from abrasion while sandblasting or from paint
overspray. Rubber covers protect each cylinder rod as
it extends and retracts. The covers prevent sand and
paint from damaging the cylinder seals and rod.
TB126J – 0192117EE 31
Page 36
Chapter 7 – Prestart Inspection
Inspect the covers while operating the machine to ensure they are securely fastened and completely cover
the cylinder rod. Make sure there are no holes in the
covers.
Structures
Visually inspect all weldments and related components.
It is important to inspect the fasteners that connect the
components.
Weldments
Visually inspect all weldments for abnormal wear,
abrasion or deformation that could cause interference
between moving parts.
Inspect the welds on the structural components. Pay
particular attention to boom welds. The area to be
inspected should be clean and free of dirt and grease.
Look for visible cracks in the weld and at the weld to parent material joint. A bright light may be used to provide
adequate visibility of the inspection area.
Slide Pads
The main boom has slide pads (refer to Figure 7.18)
between the main and tip boom sections.
Wire Ropes
Visually inspect the wire ropes where they are connected
to the outside of the main boom. There are two wire rope
connections on the bottom of the tip end of the main
boom (refer to Figure 7.19) and inside the cover at the
base end of the main boom (refer to Figure 7.22).
Wire Rope
Connections
Figure 7.19 – Bottom of Main Boom at Tip End
Slide Pads
Figure 7.18 – Slide Pads at Tip End of Boom
Use the lower controls to raise the main boom to horizontal. Extend the tip boom about 30 cm (1′). Visually
inspect the slide pads (refer to Figure 7.18) to make sure
they are in place and are not obviously loose.
Inspect the surface where the pads contact the intermediate and tip booms. The paint must be in place with no
signs of bare metal.
The extension cylinder support bracket has slide pads
that can be inspected by looking into the base end of
the main boom.
Wire Rope
Connections
Figure 7.20 – Base End of Main Boom
Visually inspect the whifes to ensure that they are
parallel to the edge of the boom. There are two whifes
on the botton of the tip end of the main boom (refer to
Figure 7.21) and inside the cover at the base end of the
main boom (refer to Figure 7.22). The wire ropes run
through the whifes.
Inspect the surface where the pads contact the main
boom. The paint must be in place with no signs of bare
metal.
32 TB126J – 0192117EE
Page 37
Chapter 7 – Prestart Inspection
Whifes
Figure 7.21 – Bottom of Main Boom at Tip End
Whife
Belleville washers
Figure 7.23 – Bottom of Main Boom at Tip End
Belleville washers
Whife
Figure 7.22 – Base End of Main Boom
Visually inspect the Belleville washers. They should be
collapsed with no gaps between any washer. The washers are located on each wire rope behind the nut at each
end of the wire (refer to Figures 7.23 and 7.24).
Figure 7.24 – Base End of Main Boom
Fasteners
Visually inspect all fasteners to see that none are missing or loose.
Pay particular attention to all of the bolts, nuts, rollpins,
collars and snap rings that connect the booms and
cylinders. They should all be present, tight and not
damaged in any way.
Raise the main boom to access the rotation bearing
bolts in the turntable (refer to Figure 7.25).
Figure 7.25 – Rotation Bearing Bolts
TB126J – 0192117EE 33
Page 38
Chapter 7 – Prestart Inspection
Inspect the rotation bearing bolts to ensure that none
are missing, damaged, or loose.
Upper Control Station
Inspect the platform and upper controls only if all functions operated properly from the lower controls.
Guardrail System
The guardrail system (refer to Figure 7.26) includes the
top rail, mid rail, toeboards and a gravity gate or optional
swinging gate.
Top Rail
Gravity
Gate
Platform Foot
Switch
Figure 7.26 – Guardrail System
Inspect all components of the guardrail system. The
rails and toeboards must all be in place and free of
any damage or deformation. Visually check the rail and
toeboard welds for cracks. All bolts and nuts fastening
the platform in place must be present and not show any
signs of looseness.
Inspect the gravity gate to be sure it is present, is not
damaged and moves freely.
Inspect the optional swinging gate to see that it swings
freely, closes rmly and is not deformed in any way.
Make sure the spring closes and secures the gate when
the gate is closed.
Lanyard
Anchors
Mid Rail
Toeboard
3. At the upper controls (refer to Figure 7.27), pull the
emergency stop button outward.
Emergency Stop
Figure 7.27 – Upper Controls
4. Turn the master start switch on the front of the upper
control panel to start until the engine starts, then
release it.
5. Let the engine warm to operating temperature.
ADanger
Pinch points may exist between moving components. Death or serious injury can result from
becoming trapped between components, buildings, structures, or other obstacles. Make sure all
personnel stand clear of the aerial platform while
performing the prestart inspection.
AWarning
The potential for an accident increases when operating an aerial platform that is damaged or malfunctioning. Death or serious injury can result from such
accidents. Do not operate the aerial platform if it is
damaged or malfunctioning.
6. Place the drive/boom selector switch in the boom
position.
Lanyard Anchors
There are two lanyard anchors below the upper control
panel (refer to Figure 7.26).
Visually inspect the lanyard anchors to make sure they
are in place, are not deformed and are securely fastened
to the platform.
Operating Controls
Use the following procedure to operate the machine
from the upper controls.
1. Turn the battery disconnect switch on.
2. At the lower controls, pull the emergency stop button outward. Turn the switch to the upper control
position.
34 TB126J – 0192117EE
7. Test the platform foot switch by moving a boom
function control without stepping on the foot switch.
If movement occurs the interlock is not functioning properly. Do not operate the machine until the
problem is corrected.
8. Test the operation of each control in both directions
from the upper controls.
9. The drive range switch and maximum travel speeds
are interlocked through a limit switch on the turntable that senses the main boom position. When
the main boom is raised slightly above horizontal
or extended approximately 2.4 m (8′) the machine
should travel in low speed only. To operate in high
speed the booms must be stowed.
Page 39
Chapter 7 – Prestart Inspection
Emergency Stop
Push the emergency stop button in to turn off the engine.
The upper control functions should not operate with the
emergency stop in this position.
Emergency Power
Pull the emergency stop button out and place the antirestart master switch in the on position.
Hold the engine/emergency power switch in the emergency power position and step on the platform foot
switch to operate the aerial platform from the upper
controls using the emergency power system.
Horn
Press the horn button (refer to Figure 7.28) to ensure
that it sounds to warn personnel in the area.
Machine/Generator Switch
Drive Motion Alarm
The machine may be equipped with an optional drive
motion alarm. Drive in both the forward and reverse
directions to ensure that the alarm sounds to warn personnel in the area that the aerial platform is in motion.
Driving and Work Lights
The machine may be equipped with driving lights and/or
platform work lights. Turn the engine on and use the
switch on the back of each light to momentarily turn it
on to see that it works.
Platform Control Cover
The machine may be equipped with an optional platform
control cover. Inspect the cover to ensure it ts properly
over the control panel.
Placards and Decals
Inspect all safety and operational placards and decals.
Make certain they are in place, in good condition and
are legible.
The placards and decals may be cleaned with soap and
water, and a soft cloth if the words or pictures cannot
be seen.
Horn
Figure 7.28 – Upper Control Panel
AC Generator
The machine may be equipped with an optional hydraulic
powered AC generator. With the engine running, place
the machine/generator control (refer to Figure 7.28) in
the generator position to provide electrical power to the
outlet at the platform and to the outlet on the end of the
generator housing.
Plug an electrical tool into the receptacle at the platform
and at the generator and try to operate the tool to verify
proper operation of the outlet.
ACaution
Solvents may contain hazardous ingredients. Follow the manufacturer’s label for proper use and
disposal. Wear protective gloves and splash-proof
safety glasses when using solvents.
Wet paint overspray may be removed using a natural
biodegradable solvent and a soft cloth.
Replace any missing or illegible placards or decals
before operating the aerial platform. Placard and decal
kits are available from Snorkel.
The safety related placards and decals are illustrated
on the following pages.
TB126J – 0192117EE 35
Page 40
Chapter 7 – Prestart Inspection
0190989E
0190989E
0070901
0070901
0074311
(One per Cylinder)
0162366
0073298
0162366
0162336E
Right Side
0162336E
0073298
0074311
36 TB126J – 0192117EE
Page 41
0162336E
0162366
Chapter 7 – Prestart Inspection
0162366
0162366
0162336E
0073298
Left Side
0162336E
0073298
TB126J – 0192117EE 37
Page 42
Chapter 7 – Prestart Inspection
Mainta in 10 fe et minimum cle ara nce from electric al power lines an d a pparatus .
You must allow for pla tform s way, roc k, or s ag.
This aeria l de vice does no t provide protec tion from conta ct with or pro ximity to an
elec trically cha rged conduc tor.
Dea th or se rious injury will res ult from suc h c ontact o r ina dequa te cle ara nce.
DANG E R
E L E C TR OC UT IO N HA ZA R D
T HIS MA C HIN E IS N OT E LE C T RI CA L LY INS U LAT E D
0072530
Be ce rtain area under ja ck sh oe plate
is un obstructed and can support r ear
axle weight.
CRUSHING HAZARD
0110708E
RETRACT LOWER
EXTEND
AXLES
RAISE
0110708E
Rear
Top View of Chassis
Radiator
0072531
Front
0151410
0110708E
0151410
Platform
38 TB126J – 0192117EE
0072530
Upper Controls
0072531
0072530
Page 43
Chapter 7 – Prestart Inspection
Prestart Inspection Checklist
Item Inspect For Ok
Operator’s Manual In manual holder
Engine
Oil Level Between full and add marks
Coolant Proper uid level
Radiator Cap tight, good condition and clean
Fuel tank and line Tank full, cap in place and tight/no leaks
Air lter Green indicator
Charging system Proper operation
Cold weather start kit No damage or deformation
Electrical System
Emergency power battery Condition and charged for proper operation
Battery uid level and terminals Proper level/clean, connectors tight
Cables and wiring harness No wear or physical damage
Envelope Management System Proper operation
Hydraulic System
Fluid level Between full and add marks
Fluid lter Verify operation in the green zone
Hoses, tubes and ttings No leaks
Cold weather warm-up kit Proper operation
Tires and Wheels Good condition
Lower Control System
Axle/boom interlock Proper operation
Operating controls Proper operation
Emergency stop and emergency power Shuts off lower controls/proper operation
Emergency Lowering Proper operation
Level Sensor Sounds tilt alarm
Flashing Light Proper operation
Sandblast Protection Kit In place and proper operation
Structures
Weldments Welds intact, no damage or deformation
Slide Pads In place, no damage or deformation
Fasteners In place and tight
Wire Ropes No deformation or broken strands
Whifes Parallel to boom ends
Belleville washers Compressed with no gaps
Upper Control Station
Guardrail system and lanyard anchors Welds intact, no damage or deformation
Operating controls Proper operation
Emergency stop and emergency power Shuts off upper controls/proper operation
Horn Sounds when activated
AC Generator Proper operation
Drive motion alarm Sounds when aerial platform moves
Driving and work lights Proper operation
Platform control cover In place and proper operation
Placards and Decals In place and readable
TB126J – 0192117EE 39
Page 44
Chapter 7 – Prestart Inspection
40 TB126J – 0192117EE
Page 45
Chapter 8 – Operation
The aerial platform may be operated from either the
lower or upper controls.
ADanger
The aerial platform is not electrically insulated.
Death or serious injury can result from contact
with, or inadequate clearance from, an energized
conductor. Do not go closer than the minimum safe
approach distance as dened by ANSI or national
safety regulations.
Pinch points may exist between moving components. Death or serious injury can result from becoming trapped between components, buildings,
structures, or other obstacles. Make sure there is
sufcient clearance around the machine before moving the chassis, booms, or platform. Allow sufcient
room and time to stop movement to avoid contact
with structures or other hazards.
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-
over accident. Operate the aerial platform on a rm,
at, level surface. Avoid travel speeds and/or rough
terrain that could cause sudden changes in platform
position. Do not drive or position the aerial platform
for elevated use near any drop-off, hole, slope, soft
or uneven ground, or other tip-over hazard.
The platform rated work load is the total weight of the
personnel and equipment that may be lifted in the platform. The work loads are stated on the platform rating
placard mounted at the rear of the platform.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a
tip-over accident. Do not exceed the capacity values
indicated on the platform rating placard.
Cold, thick hydraulic oil does not ow well and may
cause delay in response to control movement and improper voltage output of the AC generator. Cold hydraulic
oil may also cause cavitation and pump damage. The
hydraulic system may be equipped with an optional cold
weather warm-up kit.
Engine Cold Weather Start Kit
The optional engine cold weather start kit is an engine
block heater.
Block Heater
Plug the heater cord in eight hours before starting the
engine. The heater will warm the engine block to make
cold weather starting easier.
Unplug the power cord before starting the engine.
Hydraulic System Cold Weather Warm-Up
Some engines may have a hydraulic uid warm-up system that will automatically warm the uid upon activating
the warm-up switch. The hydraulic uid may also be
warmed manually if the machine is not equipped with
the optional warm-up system.
ACaution
Not all hydraulic uid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and can increase component wear. Only
use hydraulic uid as recommended.
Use cold weather hydraulic oil as recommended in the
machine General Specications in temperatures of
-13°C (10°F) or below.
Hydraulic System Warm-Up Switch
This system may be used to warm the hydraulic uid
when the ambient temperature is below 0°C (32°F) and
boom movement is sluggish because of cold uid.
Capacity values indicate the rated lifting capacity and
do not indicate aerial platform stability.
The operator bears ultimate responsibility for ensuring
that the aerial platform is properly set up for the particular
conditions encountered.
Cold Weather Start-Up
If the ambient temperature is 0°C (32°F) or below, the
engine and hydraulic system oil may need to be warmed
before operation. Do not operate the engine at more than
a fast idle until the engine and hydraulic oil has had a
chance to warm. The engine may be equipped with an
optional cold weather start kit.
TB126J – 0192117EE 41
There is a toggle switch for the warm-up system on the
lower control panel and one on the left side of the upper
control panel.
The engine must be running and the switch used to turn
the system on must be at the same location that the engine was started. For example, if the engine was started
from the lower controls, the warm-up switch at the lower
controls must be used for the system to operate.
Machine functions are not operational while using the
hydraulic warm-up system.
To operate the warm-up system:
1. Place the engine throttle in the slow position.
2. Place the controls selector switch in the lower control
position.
Page 46
Chapter 8 – Operation
3. Place the warm-up switch in the on position.
4. After the hydraulic uid reaches 10°C (50°F) as
indicated on the thermometer, place the warm-up
switch in the off position.
Manually Warming The Hydraulic System
The hydraulic oil may be warmed by placing the boom/
axle switch in the axle position. The boom must be in
the stowed position.
ACaution
Not all hydraulic uid is suitable to use in the hydraulic system. Some have poor lubricating characteristics and can increase component wear. Only
use hydraulic uid as recommended.
Use cold weather hydraulic oil as recommended in the
machine General Specications in temperatures of
-13°C (10°F) or below.
Preparing for Operation
Use the following procedure to prepare the aerial platform for operation.
1. Perform a prestart inspection as described in Chapter 7.
2. Turn start key switch until the engine starts, then
release. The engine will not start if the controls
selector switch is left in the lower control position
for 30 seconds or longer before starting the engine.
The controls selector switch must be turned back to
off before the engine will start.
3. Let the engine warm to operating temperature.
4. Place the boom/axle switch in the axle position to
operate the rear axles and in the boom position to
operate the boom and turntable functions.
5. Hold the ground operation switch in the on position while operating the boom and turntable control
toggle switches.
6. Hold the appropriate toggle switch in the desired
direction.
7. Release the function toggle switch to stop movement.
8. Place the ground operation switch in the off position
when no functions are being operated.
2. Place the battery disconnect switch in the on position.
3. Close and latch the doors.
4. Before painting or sandblasting make sure the
sandblast protection kit and the platform control
cover are properly installed. These options, when
used properly will protect the control placards and
cylinder rods from paint overspray and abrasion
while sandblasting.
Lower Controls
The lower controls override the upper controls. This
means that the lower controls can always be used to
operate the platform regardless of the position of the
upper control emergency stop button.
Boom, turntable and platform functions may be operated
from the lower controls. Boom elevation and extension
is limited when the rear axles are retracted. The lower
controls may be used for initial set up of the aerial platform, and for testing and inspection.
Use the following procedure to operate boom, turntable
or platform functions using the lower controls.
1. Pull the emergency stop button (refer to Figure 8.1)
outward. Insert the key in the control selector and
turn the switch to the lower control position.
Boom/Axle Switch
Figure 8.1 – Lower Controls
Axle Controls
To raise the boom above horizontal and to extend the
boom fully, while operating from either the lower or upper
controls, the rear axles must be extended and properly
locked into position.
The machine can be driven from the upper controls with
the axles extended or retracted. The boom must be lowered and retracted before beginning this procedure.
42 TB126J – 0192117EE
Page 47
Chapter 8 – Operation
Extending The Rear Axles
1. With the machine set up for operation from the lower
controls, place the boom/axle switch (refer to Figure
8.2) in the axle position.
ADanger
Make sure the area under the jack shoe is unobstructed and can support the weight of the axles.
Use support such as an outrigger pad under the jack
shoe if necessary to increase the support area.
2. Hold the jack lever (refer to Figure 8.2) in the raise
position until the rear wheels are off the ground and
the jack has stopped lifting the chassis.
Jack LeverAxle Lever
Figure 8.2 – Top of Chassis
3. Remove the pin lock and pin (refer to Figure 8.3)
from the upper hole in the chassis.
5. Fully install the pin in the lower hole in the chassis
(refer to Figure 8.4) and install the pin lock through
the pin and the lip around the hole.
Note
It may be necessary to cycle the axle lever back and
forth, to align the holes inside the chassis, while pushing
the pin into position.
Pin
Pin Lock
Figure 8.4 – Axles Extended and Pinned
6. Hold the jack lever in the lower position until the rear
wheels are on the ground and the jack has stopped
retracting.
Retracting The Rear Axles
The axles can be retracted by basically reversing the
above procedure.
Pin Lock
Pin
Figure 8.3 – Rear of Chassis
Note
It may be necessary to cycle the axle lever back and
forth, to relieve pressure on the pin, while twisting the
pin to remove it.
4. Hold the axle lever (refer to Figure 8.3) in the extend
position until the axles stop extending.
Note
Only one axle will extend at a time. They do not both
extend at the same time.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tip-over
accident. In the event of a system malfunction, do
not retract the axles while the booms are elevated.
The booms must be completely retracted and lowered
before retracting the rear axles.
Upper Controls
The upper controls may be used for driving the aerial
platform and positioning the booms and platform while
on the job.
Use the following procedure to operate machine functions using the upper controls.
1. At the lower controls, pull the emergency stop button
outward. Insert the key in the controls selector and
turn the switch to the upper control position.
2. Enter the platform and securely close the gate.
3. Attach the fall restraint lanyard to one of the anchor
points.
TB126J – 0192117EE 43
Page 48
Chapter 8 – Operation
4. Pull the emergency stop outward (refer to Figure
8.5).
Emergency Stop
Platform Overload
Light
Figure 8.5 – Upper Controls
5. Turn the anti-restart master switch to on and pause
a few seconds while the alarm sounds to alert others
that the machine is about to start. Turn the switch to
start, then release it to on. The engine will not start
if the switch is left in the on position for 30 seconds
or longer before turning it to start. The switch must
be turned back to off before the engine will start.
6. Let the engine warm to operating temperature.
Boom Operation
Use the following procedure to operate the turntable,
boom or platform functions.
1. Place the drive/boom selector switch in the boom
position.
2. Step down on the platform foot switch (refer to Figure
8.6). This switch must be held down to operate the
upper controls.
Driving and Steering
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a
tip-over accident. Do not drive an elevated aerial
platform on soft, uneven, or sloping surfaces. Do
not drive four wheel drive machines on grades that
exceed 30 percent.
For operation on grades up to 25 percent, it is recommended that the main boom be near horizontal and the
jib elevated just enough to provide adequate ground
clearance.
A 25 percent grade is a 0.76 m (30″) vertical rise in 3.05
m (10′) horizontal length.
Avoid driving with the platform over the front (steer) end
of the chassis. In this position the machine is difcult to
control because:
• drive and steer control movements and their resulting machine movements are reversed.
• when driving fast, sudden turns or stops produce
more severe reactions to platform occupants.
• more turning space is required to prevent the
platform from colliding with obstacles several feet
beyond the path of the tires.
AWarning
Death or serious injury can result from improperly
driving or steering the aerial platform. Read and
understand the information in this manual and on
the placards and decals on the machine before operating the aerial platform on the job.
The blue and yellow arrows on the chassis indicate the
direction the chassis will move when the drive or steer
control is moved toward the corresponding color.
When the machine is in the stowed position, with the
booms centered between the rear wheels, the direction
Platform Foot
Switch
Figure 8.6 – Platform
3. Hold the appropriate control in the desired direction.
Always look in the direction of movement.
4. Releasing the control to its neutral position, or releasing the foot switch will stop movement.
44 TB126J – 0192117EE
of drive and steer control movement corresponds with
the direction of chassis movement.
When the turntable is rotated from the stowed position,
with the booms to either side of or in front of the chassis,
the direction of control movement does not correspond
with the direction of chassis movement.
To avoid confusion, always drive to the work area or
move between work areas with the turntable and booms
in the stowed position. After arriving at the work area,
the booms may be positioned to the side or the front
of the chassis for nal positioning. Always look in the
direction of movement as indicated by the directional
arrows on the chassis.
Page 49
Chapter 8 – Operation
Use the following procedure to operate the drive and
steer functions.
1. Determine the desired drive range for the specic
driving conditions.
Use high range when traveling across rm, at,
level surfaces. High range can only be activated
when the booms are stowed. High range is for
high speed, low torque operation.
Use low range for driving on loading ramps or oth-
er steep grades and when safety considerations
demand slow deliberate machine movement. Low
range is for low speed, high torque operation.
2. Place the drive/boom selector switch in the drive
position.
3. Step down on the platform foot switch.
4. Push the drive joystick forward to move the chassis forward, the direction of the blue arrow. Pull the
joystick backward to move the chassis backward,
the direction of the yellow arrow. The drive speed
is proportional to the joystick position.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Do not alter,
disable, or override any safety device.
Do not use the aerial platform if it drives faster than 1.2
km/h (0.75 mile per hour) [10 m (33 feet) in 30 seconds]
when the booms are elevated up to mid elevation.
Above mid-elevation, the maximum speed should be
0.06 m/sec (creep).
Motion Warning Alarm
The optional motion warning alarm sounds loud intermittent beeps when the drive joystick is in the forward or
reverse position.
Platform Overload Sensing System
All functions are stopped from the upper and lower
controls, when the platform overload limit is exceeded.
The horn will sound intermittently and the red overload
light (refer to Figure 8.7) will blink until the excess load
is removed from the platform. At that time, the machine
functions are again operational.
5. To stop drive motion, return the joystick to neutral.
6. Push the drive joystick to the right to steer to the
right, the direction of the yellow arrow. Push the
joystick to the left to steer to the left, the direction
of the blue arrow.
Note
The steering wheels are not self-centering. The machine
must be driving to steer the wheels and must be driving
fast enough to release the brakes for steering to work.
Set the steering wheels straight ahead after completing a turn.
7. After driving to the desired location, release the foot
switch, or push the emergency stop button to apply
the parking brakes.
Drive Speeds
The drive speed is proportional to the joystick position.
The farther the joystick is moved, the faster the travel
speed.
Always slow down and shift the drive system to low
range before traveling over rough terrain or any sloped
surface.
Platform
Overload Light
Figure 8.7 – Upper Controls
If the platform becomes signicantly overloaded, or if
an upward force on the platform exceeds approximately
445 N (100 lb), the system will enter into error mode,
stopping all functions from the upper and lower controls.
The horn will then sound constantly and the overload
light will stay illuminated at the upper and lower controls
(refer to Figures 8.7 and 8.8).
Drive speed ranges are interlocked through a limit switch
that senses the main boom position. When the boom
is elevated up to midway, only the low drive speed will
work. When the boom is elevated to midway or above,
only the creep drive speed will work.
TB126J – 0192117EE 45
Page 50
Chapter 8 – Operation
Platform Overload
Light
Figure 8.8 – Lower Control Panel
The system will remain in error mode until the excess
load is removed from the platform and the emergency
stop button or start switch is cycled off and back on,
resetting the system. At that time, the machine functions
are operational.
ACaution
The emergency power system is for emergency
lowering and stowing only. The length of time the
pump can be operated depends on the capacity
of the battery. Do not use this system for normal
operation.
If the platform overload sensing system is tripped while
operating the machine or if the system is in error mode
and can not be reset, the emergency power system
may still be used for emergency machine operation from
either the lower or upper controls.
To eliminate repeated tripping of the system during ma-
chine operation, there is a ve second delay in machine
functions following:
• starting the engine.
• placing the drive/boom selector switch in the boom
position when the main boom is below horizontal
and fully retracted.
• removing excess load from the platform.
Four Wheel Drive
The machine is equipped with a four wheel drive system.
This system operates full time and requires no action
by the operator.
High Range Speed Selector
The high range speed selector (refer to Figure 8.9) works
in conjunction with the drive range switch to determine
the maximum drive speed when the drive range selector
is in the HI position. LO drive range speed is not affected
by the high range speed selector.
For maximum drive speed 4.8 km/h (3.0 mph) with low
gradeability, pull the knob upward and rotate it 90 degrees to lock it in the up position.
For slower drive speed 2.4 km/h (1.5 mph) with higher
gradeability, push the knob downward and rotate it 90
degrees to lock it in the down position.
High Range Speed Selector
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a
tip-over accident. Do not exceed the capacity values
indicated on the platform rating placard.
The overload sensing system is not active when the
machine is being driven with the booms in the stowed
position. This allows the machine to be driven without
the system sensing an overload due to rough ground
conditions.
46 TB126J – 0192117EE
AC Generator
The optional generator supplies power to the electrical
outlet only when the engine is running and the machine
is stationary. The machine functions will not operate
when the machine/generator selector switch is in the
generator position.
Figure 8.9 – Top of Chassis
Page 51
Chapter 8 – Operation
ACaution
Cold hydraulic oil does not ow well and may produce improper generator output voltage. Improper
outlet voltage can damage some electrical power
tools and equipment. Warm the hydraulic oil before
operating the generator.
Do not operate the generator unless the hydraulic oil
temperature is at least 38°C (100°F). Refer to Cold
Weather Start-Up for a hydraulic oil warm-up procedure.
Start the engine and place the machine/generator switch
(refer to Figure 8.10) in the generator position.
Machine/Generator Switch
Figure 8.10 – Upper Control Panel Front
3. Raise the boom slightly above horizontal.
4. Open the input connector on the chassis.
5. Allow the uid to drain from the line.
6. Lower the boom and close both connections.
Driving Lights
The optional driving lights are for use in dimly lit areas
and are not intended for driving on public roadways.
There are two headlights at the front of the chassis and
two blinking taillights at the rear of the chassis.
The lights are operational when the battery disconnect
switch and the master switch are turned on.
Note
Working with the driving or platform work lights on, while
the engine is off, can discharge the batteries enough that
the engine will not start or the emergency power system
will not operate. If the engine cannot be left running while
the lights are on, start and run the engine for at least 15
minutes each hour.
Platform Work Lights
The optional platform work lights (refer to gure 8.11)
are located on the top rail of the platform next to the
upper controls. The direction a light points can be adjusted by using two 1/2″ wrenches to loosen the clamp
below the light.
The engine will run at high idle while the generator is
operating. The generator will continue to operate as
long as the engine is running and the switch is in the
generator position.
Air Line
The optional air line may be used to conduct air for tool
operation at the platform. The input connector is at the
rear of the chassis and the output connector is at the
platform on the rotator guard. The maximum working
pressure of the line is 1,723 kPa (250 psi).
The air line may be used to conduct uids such as water
or antifreeze. Contact Snorkel for compatibility informa-
tion before using the air line to conduct other uids.
ACaution
Fluid in the air line can damage some air tools or
freeze and damage the line. Drain and blow out the
air line after using it to conduct uids.
Use the following procedure to drain the air line.
1. Close the input connector on the chassis.
2. Open the output connector at the platform.
Platform Work
Lights
Figure 8.11 – Platform Work Lights
The lights are operational when the upper controls
emergency stop button is pulled up and the anti-restart
master switch is turned on.
The engine speed increases to high idle when the platform work lights are turned on.
TB126J – 0192117EE 47
Page 52
Chapter 8 – Operation
48 TB126J – 0192117EE
Page 53
Chapter 9 – Stowing and Transporting
To prevent unauthorized use and damage, properly stow
the aerial platform at the end of each work day. It must
also be properly stowed while transporting.
Stowing
The properly stowed position is shown in Figure 9.1.
Figure 9.1 – Stowed Position
Use the following procedure to properly stow the aerial
platform.
1. Rotate the platform so it is perpendicular to the end
of the boom.
2. Fully retract and lower the main boom.
3. Center the booms between the rear wheels.
4. If the engine has just been under load and is hot,
set the throttle switch to low and let the engine idle
for ve minutes.
5. Turn the engine off and place the platform control
cover over the upper controls if the machine is
equipped with that option.
6. Push the lower controls emergency stop button
inward. Turn the controls selector switch off and
remove the key.
7. Turn the battery disconnect switch off.
8. Close and latch the cowling doors.
A 25 percent grade is a 0.76 m (30″) vertical rise in
3.05 m (10′) horizontal length.
Use a winch to load and unload the aerial platform on
ramps that exceed the grade capability of the machine.
A winch may also be used when conditions of the ramp
could cause driving to be hazardous.
The equipment used to load, unload, and transport the
aerial platform must have adequate capacity. Refer to
Chapter 2 to determine the approximate weight of the
aerial platform.
The user assumes all responsibility for choosing the
proper method of transportation, and the proper selection and use of transportation and tie-down devices,
making sure the equipment used is capable of supporting the weight of the aerial platform and that all
manufacturer’s instructions and warnings, regulations
and safety rules of their employer, the DOT and/or any
other state or federal laws are followed.
Driving
Use the following procedure to drive the aerial platform
onto the transport vehicle.
1. Locate the transport vehicle so it is in a straight line
with the loading ramp.
2. Chock the vehicle wheels so it cannot roll away from
the ramp while the machine is loaded.
3. Remove any unnecessary tools, materials, or other
loose objects from the platform.
4. Drive the machine to the foot of the loading ramp
with the front wheels nearest the ramp. Make sure
the machine is centered with the ramps and that the
steering wheels are straight.
5. Rotate the platform so it is perpendicular to the
boom.
Transporting
The aerial platform may be moved on a transport vehicle.
Depending on the particular situation, the aerial platform
may be driven, winched or hoisted onto a vehicle such
as a truck or trailer. Driving is the preferred method.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a
tip-over accident. Do not drive on ramps that exceed
25 percent grade, or where conditions of the ramp
could cause driving to be hazardous.
Drive the aerial platform onto the transport vehicle if the
ramp incline is within the 25 percent grade capability of
the aerial platform.
TB126J – 0192117EE 49
6. Retract the tip boom and raise the main boom or jib
so it is horizontal.
7. Rotate the turntable slightly to the side so you can
see the front wheels.
8. Verify that the machine wheels, loading ramps, and
transport vehicle are aligned.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a
tip-over accident. Set the drive range to low before
driving up or down a grade.
9. Place the drive range switch in the low position.
Page 54
Chapter 9 – Stowing and Transporting
10. Drive the aerial platform onto the transport vehicle
in a straight line through the grade transitions with
minimal turning.
11. Rotate the turntable to align the main boom between
the rear wheels.
12. When driving down the ramp, always back the machine with the platform on the downhill side only.
Winching
Use the following procedure to winch the aerial platform
onto the transport vehicle.
1. Locate the transport vehicle so the aerial platform
will not roll forward after it is loaded.
2. Chock the vehicle wheels so it can not roll away
from the ramp while the machine is loaded.
3. Remove any unnecessary tools, materials, or other
loose objects from the platform.
4. Drive the machine to the foot of the loading ramp
with the front wheels nearest the ramp. Make sure
the machine is centered with the ramps and that the
steering wheels are straight.
5. Properly stow the aerial platform.
6. Attach the winch to the tie-down lugs (refer to Figure
9.2) on the front of the chassis.
Bolt
Disconnect Plate
Figure 9.3 – Drive Wheel
8. Use the winch to position the aerial platform on the
transport vehicle.
AWarning
The aerial platform is free to move when the drive
hubs are disabled. Death or serious injury can result. Re-enable the drive hubs before operating the
aerial platform.
9. At each drive wheel, remove the two bolts and return
the plate to its original position as shown in Figure
9.3.
10. Start the engine and operate the drive control in
forward and reverse several times to engage the
drive hubs.
Tie-Down/Lifting
Lugs
Figure 9.2 – Front Tie-Down/Lifting Lugs
7. At each drive wheel, remove the two bolts from the
disconnect plate (refer to Figure 9.3). Turn the plate
over so the nipple points inward. Reinstall the two
bolts.
Hoisting
Use a four point sling arrangement attached to the lifting
lugs when hoisting the aerial platform. Machine damage
can occur if the sling is attached to the booms, turntable
or platform.
AWarning
The potential for an accident increases when the
aerial platform is lifted using improper equipment
and/or lifting techniques. Death or serious injury
can result from such accidents. Use proper equipment and lifting techniques when lifting the aerial
platform.
Know the weight of the aerial platform and the capacity of the lifting devices before hoisting. Lifting devices
include the hoist or crane, chains, straps, cables, hooks,
sheaves, shackles, slings and other hardware used
to support the machine. The gross vehicle weight is
stamped on the serial number placard and is listed in
Chapter 2.
50 TB126J – 0192117EE
Page 55
Chapter 9 – Stowing and Transporting
The user assumes all responsibility for making sure the
equipment used is capable of supporting the weight of
the aerial platform and that all manufacturer’s instructions and warnings, regulations and safety rules of their
employer and/or any state or federal law are followed.
Use the following procedure to hoist the aerial platform
onto the transport vehicle.
1. Properly stow the aerial platform.
2. Inspect the front lifting lugs (refer to Figure 9.2) and
the rear lifting lugs (refer to Figure 9.4) to make sure
they are free of cracks and are in good condition.
Have any damage repaired by a qualied service
technician before attempting to hoist the machine.
Tie-Down/Lifting
Lugs
7. Use the hoist or crane to carefully raise and position
the aerial platform onto the transport vehicle.
Securing for Transport
Use the following procedure to secure the aerial platform
on the transport vehicle.
1. Chock the wheels.
2. Raise the main boom about 0.3 m (1′).
3. Place a large wood block under the tip end of the
jib foot. Lower the platform so the boom or foot rests
on the wood block.
4. Remove all personnel, tools, materials or other loose
objects from the platform.
5. Turn the start switch off and place the platform control cover over the upper controls if the machine is
equipped with that option.
6. Place the lower controls emergency stop switch in
the off position. Turn the start switch off and remove
the key.
7. Turn the battery disconnect switch off.
8. Close and latch the cowling doors.
Figure 9.4 – Rear Tie-Down/Lifting Lugs
3. Remove all personnel, tools, materials or other loose
objects from the platform.
4. Connect the chains or straps to the lifting lugs using
bolted shackles. Hooks that t properly in the lugs
and that have latching mechanisms to prevent them
from falling out under a slack line condition may also
be used.
Do not run the sling cable through the lifting lugs.
Cable damage and/or failure can result from the
cable contacting the sharp corners of the lug. There
is no effective way of putting a corner protector in
the hole of the lifting lug.
5. Use spreader bars of sufcient length to keep the
chains, straps, or cables from contacting the turntable or booms. When using cables, use rigid corner
protectors at any point where the cable contacts
sharp corners to prevent damaging the cable. Careful rigging of the spreaders is required to prevent
machine damage.
9. Use wire-ties to fasten the platform gate to the
guardrails to prevent the gate from bouncing. Also,
use wire-ties to fasten the platform foot switch to
the platform oor.
10. Use a nylon strap to securely fasten the platform
against the wood block. Thread the strap over the
toeboard as shown in Figure 9.5.
ACaution
Ratchets, winches, and come-alongs can produce
enough force to damage machine components. Do
not over tighten the straps or chains when securing
the aerial platform to the transport vehicle.
11. Use chains or straps to securely fasten the aerial
platform to the transport vehicle using the tie-down
lugs as attachment points. Proper tie-down and
hauling are the responsibility of the carrier.
6. Adjust the length of each chain or strap so the aerial
platform remains level when raised off the ground.
TB126J – 0192117EE 51
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Chapter 9 – Stowing and Transporting
Steel
Aluminum
Figure 9.5 – Platform
52 TB126J – 0192117EE
Page 57
Chapter 10 – Emergency Operation
If the main hydraulic system fails, the aerial platform
may be lowered and stowed using the emergency
power system. The main boom may be lowered using
the emergency bleed down system. The machine may
be towed if the drive system fails. Refer to Emergency
Power System, Emergency Lowering or Towing for the
appropriate procedure.
Emergency Power System
The emergency power system can be used to operate
the machine from the lower or upper controls.
ACaution
The emergency power system is for emergency
lowering and stowing only. The length of time the
pump can be operated depends on the capacity
of the battery. Do not use this system for normal
operation.
Only use the emergency power system if the main power
system fails.
Lower Controls
Use the following procedure to operate the machine
using the emergency power system from the lower
controls.
1. Place the battery disconnect switch in the on position
(refer to Figure 10.1).
Control
Selector
Emergency
Stop Button
Start
Button
Engine/
Emergency
Power
Ground
Operation
Figure 10.2 – Lower Controls
Upper Controls
For the upper controls to be operational:
• the battery disconnect switch must be in the on
position.
• the control selector switch at the lower controls must
be turned on.
Battery Disconnect Switch
Figure 10.1 – Battery Disconnect Switch
2. Place the key in the control selector switch (refer to
Figure 10.2) and turn the control switch to the lower
controls position.
3. Pull the emergency stop button outward.
4. Hold the ground operation switch in the on position
while holding the engine/emergency power switch
in the emergency power position.
5. Hold the appropriate function toggle switch in the
desired direction.
• the emergency stop button at the lower controls
must be in the on position.
• the control selector switch at the lower controls must
be in the platform position.
Use the following procedure to operate the machine
using the emergency power system from the upper
controls.
1. Pull the emergency stop button outward (refer to
Figure 10.3).
2. Turn the start switch on.
3. Place the drive/boom selector switch in the appropriate position.
4. Step down on the platform foot switch (refer to Figure
10.4).
TB126J – 0192117EE 53
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Chapter 10 – Emergency Operation
Drive/Boom
Selector
Platform Foot
Switch
Engine/Emergency
Power
Top
Emergency
Stop Button
Start Switch
Front
Figure 10.3 – Upper Controls
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tipover accident. When using the bleed down system,
if the boom does not retract while lowering, stop
operations immediately.
3. Toggle and hold the emergency bleed down switches
on both sides of the panel simultaneously (refer to
Figure 10.5) Hold the switches in the up position to
lower and retract the boom. Make sure the boom is
retracting and lowering at the same time.
Figure 10.4 – Platform Foot Switch
5. Hold the engine/emergency power switch in the
emergency power position.
6. Hold the appropriate function toggle switch in the
desired direction.
Electric Emergency Bleed Down System
The main boom can be lowered in an emergency using the electric emergency bleed down system. The
electric emergency bleed down switches are located on
both the upper controls and on the junction box located
on the left side of the machine. Use this method if the
engine will not start and the emergency power system
will not work.
Use the following procedure to lower the boom using
the electric emergency bleed down system. This procedure can be used from the upper or lower bleed down
switches.
1. Turn control selector switch to the off position.
2. Pull the emergency stop button out.
Emergency Bleed
Down Switch
Emergency Bleed
Down Switch
Figure 10.5 – Emergency Bleed Down Switches
54 TB126J – 0192117EE
Page 59
Emergency Lowering
The main boom can be lowered in an emergency using the emergency lowering knob at the base of the lift
cylinder. Only use this method if the engine will not start
and the emergency power system will not work.
ADanger
Pinch points exist between boom components and
between the booms and turntable. Death or serious
injury can result if the booms or platform lowers
onto personnel. Make sure all personnel stand clear
while lowering the booms.
The emergency lowering knob is located at the base
end of the main boom lift cylinder, under the center of
the turntable. It is accessible from the underside of the
turntable.
Chapter 10 – Emergency Operation
Emergency
Lowering Knob
Figure 10.6 – Emergency Lowering Knob
Use the following procedure to manually lower the main
boom.
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury can result from a tipover accident. When using the bleed down system,
if the boom does not retract while lowering, stop
operations immediately.
1. Slowly turn the knob (refer to Figure 10.6) to open
the bleed down valve. Control the rate of descent by
turning the knob. Make sure the boom is retracting
and lowering at the same time.
AWarning
The potential for an accident increases when safety
devices do not function properly. Death or serious
injury can result from such accidents. Fully close
the emergency lowering knob before operating the
aerial platform.
2. Turn the knob to close the cylinder bleed down
valve.
TB126J – 0192117EE 55
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Chapter 10 – Emergency Operation
56 TB126J – 0192117EE
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Chapter 11 – Troubleshooting
The troubleshooting chart may be used to locate and
eliminate situations where machine operation may be
interrupted. If the problem cannot be corrected with the
action listed, stow the machine and remove it from ser-
vice. Repairs must be made by qualied maintenance
personnel.
Troubleshooting Chart
Symptom Possible Cause Corrective Action
Engine will not start from lower or
upper controls.
Engine will not start from lower
controls.
Out of fuel. The engine will crank,
but will not start.
Engine is cold. Plug the optional block heater in
High engine temperature. Let engine cool. Do not restart the
Low oil pressure. Do not try to start the engine until
Switches are set wrong. The engine
will not crank.
Add correct type of fuel. Try starting
the engine for 20 seconds and then
let the starter motor cool for 60 seconds. Repeat as necessary
eight hours before starting the
engine.
engine until the cause of overheating has been corrected.
the cause of low oil pressure has
been corrected. The engine can be
restarted with low oil pressure, but
it will only run a few seconds before
it shuts off again.
Turn the battery disconnect switch
on and then at the lower controls:
The control selector switch was left
in the lower control position for 30
seconds or longer before starting
the engine.
The main system circuit breaker
on the wiring box has tripped. The
engine will not crank.
Turn the control selector switch
•
off.
Pull the emergency stop button
•
outward.
Place the controls selector in
•
the lower control position.
Wait for 5 seconds and then turn
•
the switch to start.
Turn the start switch within 30 seconds of placing the control selector
in the lower controls position.
Push the main system circuit breaker button back in. If the button pops
back out, refer the problem to a
qualied service technician.
TB126J – 0192117EE 57
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Chapter 11 – Troubleshooting
Symptom Possible Cause Corrective Action
Engine will not start from upper
controls.
Switches are set wrong. The engine
will not crank.
Turn the battery disconnect switch
on and then at the lower controls:
Turn the control selector switch
•
off.
Pull the emergency stop button
•
outward.
Place the controls selector in
•
the lower control position.
Wait for 5 seconds and then turn
•
the switch to start.
From the upper controls:
Turn the master start switch
•
off.
Pull the emergency stop button
•
outward.
Place the master start switch
•
in the on position for 5 seconds
and the then turn the switch to
start.
Platform foot switch is activated. Do not step on foot switch while
starting the engine.
Engine starts from the upper controls but no boom functions work
– machines with AC generator op-
The master start switch was left in
the on position for 30 seconds or
longer before turning it to start.
The main system circuit breaker
on the upper control panel or the
wiring box has tripped. The engine
will not crank.
The machine/generator switch is in
the generator position.
Turn the master start switch back
to off, then to start within 30 seconds.
Push the main system circuit breaker button back in. If the button pops
back out, refer the problem to a
qualied service technician.
Place the switch in the machine
position to operate machine functions.
tion only.
Engine dies when the control selector switch at the lower controls is
placed in the platform position.
Light in emergency stop button
is illuminated while the engine is
running.
Upper controls are not set-up properly.
At the upper controls, pull the emergency stop button upward and turn
the anti-restart master switch on.
High engine temperature. Lower the platform and reduce the
engine speed to idle for ve minutes. Turn the engine off and let it
cool. Do not restart the engine until
the cause of overheating has been
corrected.
Low oil pressure. Lower the platform and turn the
engine off. Do not restart the engine
until the cause of low oil pressure
has been corrected.
No alternator current/broken fan
belt.
Turn the engine off. Do not restart
the engine until the cause of no alternator current has been corrected
or the fan belt is replaced.
58 TB126J – 0192117EE
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Chapter 11 – Troubleshooting
Symptom Possible Cause Corrective Action
Light in emergency stop button is
illuminated and engine shuts off.
High engine temperature. Let the engine cool. Do not restart
the engine until the cause of overheating has been corrected.
Low oil pressure. Do not restart the engine until the
cause of low oil pressure has been
corrected. The engine can be restarted with low oil pressure, but it
will only run a few seconds before
it shuts off again.
Horn is sounding intermittently and
the overload light is ashing.
Horn is sounding constantly and the
overload light is on.
The load in the platform is greater
than the rated capacity.
The platform overload system is in
error mode.
Remove load from the platform until
the alarms stop.
Remove load until at or below rated
capacity. Cycle machine power off,
then on. If alarm continues, system
may need recalibration.
Platform overload sense system
does not work while operating the
upper controls.
Drive/boom selector switch is in the
drive position and the main boom is
below horizontal.
Normal operation. The platform
overload system is inactive while
driving with the booms in the stowed
position to prevent accidental activation due to rough terrain.
System needs calibration. Refer the problem to a qualified
service technician.
Boom functions do not immediately
return when switching from drive
to boom. There is a delay in boom
functions after switching the drive/
boom switch to the boom position
Platform overload system delay. Normal operation. The system in-
cludes a 5 second delay to eliminate
rapid stop and restart of movements
if the overload system trips during
operation.
after driving the machine with the
boom below horizontal.
All functions stop working. Low uid level in reservoir. Check uid level. Add correct type
of uid if necessary.
Engine or pump failure. Manually stow the machine using
the emergency power system or the
emergency lowering knob.
Circuit breaker is tripped. Push circuit breaker button in to
reset.
Electrical system malfunction. Manually lower the boom using the
emergency lowering knob.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Remove weight from the platform
until the load is at or below rated
capacity.
Remove weight from the platform
until the load is at or below rated
capacity. Cycle machine power off,
then on. If alarm, continues, system
may need recalibration.
TB126J – 0192117EE 59
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Chapter 11 – Troubleshooting
Symptom Possible Cause Corrective Action
Lower controls do
not work.
Battery disconnect switch turned
off.
Emergency stop button at lower
controls is pushed in to the off
Place switch in the on position.
Pull the emergency stop button
outward.
position.
Controls selector switch is in the
platform position.
Ground operation switch not held in
the on position.
Place the switch in the lower controls position.
Hold the ground operation switch in
the on position while operating the
control toggle switches.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Remove weight from the platform
until the load is at or below rated
capacity.
Remove weight from the platform
until the load is at or below rated
capacity. Cycle machine power off,
then on. If alarm, continues, system
may need recalibration.
Upper controls do not work. Battery disconnect switch turned
Place switch in the on position.
off.
Emergency stop button at lower
and upper controls is in the off
Pull the emergency stop buttons
outward.
position.
Control selector switch at lower
controls is in the lower controls
Place switch in the upper controls
position.
position.
Platform foot switch not engaged. Step down on platform foot switch
while operating controls.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Remove weight from the platform
until the load is at or below rated
capacity.
Remove weight from the platform
until the load is at or below rated
capacity. Cycle machine power off,
then on. If alarm, continues, system
may need recalibration.
Boom functions do not work. The drive/boom switch is in the drive
position.
Boom will not extend or raise above
Rear axles not properly extended. Extend the rear axles and properly
horizontal.
Boom and drive functions seem
Hydraulic oil is cold and thick. Use cold weather hydraulic oil as
sluggish.
Place the switch in the boom position.
install the pin and lock.
recommended for weather conditions. Warm oil before operating
the machine.
Boom jerks while it is extended. Wire ropes are loose. Refer the problem to a qualified
service technician.
Booms drift down. The emergency lowering valve is
open.
Turn the emergency lowering knob
to close the valve.
Hydraulic system malfunction. Stow the machine and do not oper-
ate until repairs are made.
60 TB126J – 0192117EE
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Chapter 11 – Troubleshooting
Symptom Possible Cause Corrective Action
Drive functions do not work. The drive/boom switch is in the
boom position.
Place the switch in the drive posi-
tion.
Machine on too steep a grade. Lower the booms and drive to a
level surface.
Drive hubs are disengaged. Turn drive wheel disconnect plates
around so nipples point outward.
Low hydraulic system pressure. Stow the machine and do not oper-
ate until repairs are made.
Platform overload sensor is tripped.
The horn is sounding and red overload light is blinking.
Platform overload sensor is in error
mode. The horn is sounding and red
overload light is constantly on.
Remove weight from the platform
until the load is at or below rated
capacity.
Remove weight from the platform
until the load is at or below rated
capacity. Cycle machine power off,
then on. If alarm, continues, system
may need recalibration.
Can not reach maximum drive
speed of 4.8 km/h (3 mph).
Booms are not retracted and lowered.
Fully retract and lower the boom.
Drive range switch is in LO. Place the switch in the HI position.
Wheels will not turn when winching.
Steer wheels do not turn when the
drive joystick is moved to the right
or to the left.
High range speed selector knob is
in the low speed position.
Drive hubs are engaged. Turn drive wheel disconnect plates
The drive joystick must be in the
forward or reverse position for the
steering wheels to turn.
Place the knob in the high speed
position (up).
around so nipples point inward.
Push the drive joystick slightly for-
ward or backward when operating
steer right or left.
Tilt alarm does not work. Booms are stowed. Normal operation. The tilt alarm is
operational when the booms are
near horizontal.
Circuit breaker will not reset. Electrical circuit has not had time
to cool.
Wait a minute or two for circuit to
cool, then push circuit breaker but-
ton in to reset.
Electrical system malfunction. Do not operate machine until repairs
are made.
Electrical outlet does not work. Power supply not plugged in. Plug the power cord into the power-
input connector on the generator.
Machine/generator switch not in the
generator position.
With engine running, place the
machine/generator switch in the
generator position.
Improper AC generator output
voltage.
Hydraulic oil is cold and thick. Use cold weather hydraulic oil as
recommended for weather condi-
tions. Warm oil before operating
the machine.
Hydraulic uid temperature 93°C
(200°F) or more.
Severe hydraulic leak. Failure of hose, tube, tting, seal,
Prolonged boom operation or driving.
High pressure uid return to reservoir caused by kinked or twisted
hose.
Hydraulic system component failure.
etc.
Stop operation until uid cools.
Remove the kink or twist from the
hose. Let uid cool before operat-
ing.
Stow the machine and do not oper-
ate until repairs are made.
Do not operate machine until repairs
are made.
TB126J – 0192117EE 61
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Chapter 11 – Troubleshooting
62 TB126J – 0192117EE
Page 67
Appendix A – Glossary
aerial platform – a mobile device that has an adjustable position platform,
supported from ground level by a structure.
ambient temperature – the air temperature of the immediate environment.
ammeter – an instrument for measuring the strength of an electric current
in amperes.
angle sensor – an instrument which measures the angle of the boom in
relation to the oor or ground.
authorized personnel – personnel approved as assigned to perform
specic duties at a specic location.
base – the relevant contact points of the aerial platform that form the
stability support (e.g. wheels, casters, outriggers, stabilizers).
boom – a movable cantilever beam which supports the platform.
center of gravity – the point in the aerial platform around which its weight
is evenly balanced.
chassis – the integral part of the aerial platform that provides mobility and
support for the booms.
Envelope Management System (EMS) – a system that automatically restricts the movement of the platform to maintain safe work parameters.
fall restraint – a system that is used while working on a boom lift within the
boundaries of platform guardrails to provide restraint from being projected
upward from the platform. This system includes a harness or belt, lanyard,
and a lanyard anchor. Federal OSHA, ANSI, and Snorkel require the use
of additional fall protection beyond the platform guardrails on boom supported aerial platforms.
oor or ground pressure – the maximum pressure, expressed in pounds
per square inch, a single wheel concentrates on the oor or ground.
maximum travel height – the maximum platform height or the most ad-
verse conguration(s) with respect to stability in which travel is permitted
by the manufacturer.
maximum wheel load – the load or weight that can be transmitted through
a single wheel to the oor or ground.
Minimum Safe Approach Distance – the minimum safe distance that
electrical conductors may be approached when using the aerial platform.
Also called M.S.A.D.
operation – the performance of any aerial platform functions within the
scope of its specications and in accordance with the manufacturer’s
instructions, the users work rules, and all applicable governmental regulations.
operator – a qualied person who controls the movement of an aerial
platform.
personal fall arrest system – a fall protection system that is used while
working on an unprotected edge (such as a roof top with no guardrail).
This system includes a harness, lanyard or other connecting device, a
fall arrestor, an energy absorber or decelerator, an anchorage connector,
and a secure anchorage such as a building beam, girders or columns. An
aerial platform is not a fall arrest anchorage.
platform – the portion of an aerial platform intended to be occupied by
personnel with their tools and materials.
platform height – the vertical distance measured from the oor of the
platform to the surface upon which the chassis is being supported.
prestart inspection – a required safety inspection routine that is performed
daily before operating the aerial platform.
qualied person – a person, who by reason of knowledge, experience,
or training is familiar with the operation to be performed and the hazards
involved.
gradeability – the maximum slope that the aerial platform is capable of
travel.
guardrail system – a vertical barrier around the platform to prevent
personnel from falling.
hazardous location – any location that contains, or has the potential to
contain, an explosive or ammable atmosphere as dened by ANSI/NFPA
505.
intermediate boom – a telescopic boom section that extends and retracts
from within the main boom. The intermediate boom is between the base,
or lower most section of the main boom, and the tip boom.
jib – an articulating boom attached to the tip boom which increases the
overall boom reach.
length sensor – an instrument which measures the distance the tip boom
is extended.
level sensor – a device that detects a preset degree of variation from
perfect level. The level sensor is used to sound an alarm if operating on
a slope greater than the preset value.
lower controls – the controls located at ground level for operating some
or all of the functions of the aerial platform.
main boom – a boom assembly located between the turntable and the
platform.
manufacturer – a person or entity who makes, builds or produces an
aerial platform.
rated work load – the designed carrying capacity of the aerial platform
as specied by the manufacturer.
stow – to place a component, such as the platform, in its rest position.
tip boom – a telescopic boom section that extends and retracts from
within the main boom. The tip boom is nearest the platform.
turning radius – the radius of the circle created by the wheel during a
360° turn with the steering wheels turned to maximum. Inside turning radius
is the wheel closest to the center and outside turning radius is the wheel
farthest from the center.
turntable – the structure above the rotation bearing which supports the
main boom. The turntable rotates about the centerline of rotation.
unrestricted rated work load – the maximum designed carrying capacity of the aerial platform allowed by the manufacturer in all operating
congurations.
upper controls – the controls located on or beside the platform used for
operating some or all of the functions of the aerial platform.
wheelbase – the distance from the center of the rear wheel to the center
of the front wheel.
working envelope – the area dened by the horizontal and vertical limits
of boom travel that the platform may be positioned in.
working height – platform height plus six feet.
TB126J – 0192117EE
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Appendix A – Glossary
TB126J – 0192117EE
Page 69
LIMITED WARRANTY
Snorkel warrants each new machine manufactured and sold by it to be free from defects in material and workmanship for a period
of one (1) year from date of delivery to a Customer or for one year after the machine has been placed in rst service in a Dealer
rental eet, whichever comes rst. Any part or parts which, upon examination by the Snorkel Service Department, are found to be
defective, will be replaced or repaired, at the sole discretion of Snorkel, through its local Authorized Dealer at no charge.
Snorkel further warrants the structural components; specically, the mainframe chassis, turntable, booms and scissor arms, of each
new machine manufactured by it to be free from defects in material and workmanship for an additional period of four (4) years.
Any such part or parts which, upon examination by the Snorkel Service Department, are found to be defective will be replaced
or repaired by Snorkel through its local Authorized Dealer at no charge; however, any labor charges incurred as a result of such
replacement or repair will be the responsibility of the Customer or Dealer.
The Snorkel Service Department must be notied within forty-eight (48) hours of any possible warranty situation during the applicable warranty period. Personnel performing warranty repair or replacement must obtain specic approval by Snorkel Service
Department prior to performing any warranty repair or replacement.
Customer and Dealer shall not be entitled to the benets of this warranty and Snorkel shall have no obligations hereunder unless
the “Pre-Delivery and Inspection Report” has been properly completed and returned to the Snorkel Service Department within ten
(10) days after delivery of the Snorkel product to Customer or Dealer’s rental eet. Snorkel must be notied, in writing, within ten
(10) days, of any machine sold to a Customer from a Dealer’s rental eet during the warranty period.
At the direction of the Snorkel Service Department, any component part(s) of Snorkel products to be replaced or repaired under
this warranty program must be returned freight prepaid to the Snorkel Service Department for inspection. All warranty replacement
parts will be shipped freight prepaid (standard ground) from the Snorkel Service Department or from Snorkel’s Vendor to Dealer
or Customer.
REPLACEMENT PARTS WARRANTY
Any replacement or service part made or sold by Snorkel is not subject to the preceding Limited Warranty beyond the normal warranty period of the machine upon which the part was installed.
THIS WARRANTY EXCLUDES AND SNORKEL DOES NOT WARRANT:
1. Engines, motors, tires and batteries which are manufactured by suppliers to Snorkel, who furnish their own warranty. Snorkel
will, however, to the extent permitted, pass through any such warranty protection to the Customer or Dealer.
2. Any Snorkel product which has been modied or altered outside Snorkel’s factory without Snorkel’s written approval, if such
modication or alteration, in the sole judgment of Snorkel’s Engineering and/or Service Departments, adversely affects the
stability, reliability or service life of the Snorkel product or any component thereof.
3. Any Snorkel product which has been subject to misuse, improper maintenance or accident. “Misuse” includes but is not
limited to operation beyond the factory-rated load capacity and speeds. “Improper maintenance” includes but is not limited
to failure to follow the recommendations contained in the Snorkel Operation, Maintenance, Repair Parts Manuals. Snorkel is
not responsible for normal maintenance, service adjustments and replacements, including but not limited to hydraulic uid,
lters and lubrication.
4. Normal wear of any Snorkel component part(s). Normal wear of component parts may vary with the type application or type
of environment in which the machine may be used; such as, but not limited to sandblasting applications.
5. Any Snorkel product that has come in direct contact with any chemical or abrasive material.
6. Incidental or consequential expenses, losses, or damages related to any part or equipment failure, including but not limited to
freight cost to transport the machine to a repair facility, downtime of the machine, lost time for workers, lost orders, lost rental
revenue, lost prots or increased cost.
This warranty is expressly in lieu of all other warranties, representations or liabilities of Snorkel, either expressed or implied,
unless otherwise amended in writing by Snorkel’s President, Vice President-Engineering, Vice President-Sales or Vice PresidentMarketing.
SNORKEL MAKES NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF THIS LIMITED WARRANTY.
SNORKEL MAKES NO IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND
DISCLAIMS ALL LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED TO INJURY
TO PERSONS OR PROPERTY.
The Customer shall make all warranty claims through its local Authorized Dealer and should contact the Dealer from whom the
Snorkel product was purchased for warranty service. Or, if unable to contact the Dealer, contact the Snorkel Service Department
for further assistance.
Effective July 1995
© Snorkel International, Inc. – all rights reserved Printed in the U.S.A.
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