Page 1
Operator’s
Manual
Part Number 0084030EE
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 ..................................................................2
Maintenance .............................................................2
Owner and User Responsibilities .............................2
Additional Information ...............................................2
Chapter 2 – Specications
Component Identication – TB60 .............................3
Component Identication – TB66J ...........................4
Working Envelope – TB60 ........................................5
Working Envelope – TB66J ......................................6
General Specications – TB60 .................................7
Aerial Platform .......................................................7
Platform .................................................................7
Function Speed .....................................................7
Drive System .........................................................7
Tires ......................................................................7
Electrical System ...................................................7
Hydraulic System ..................................................7
Engine ...................................................................7
Fuel Tank Capacity ................................................7
Ambient Air Temperature Operating Range ..........7
Maximum Wind Speed ..........................................7
General Specications – TB66J ...............................8
Aerial Platform .......................................................8
Platform .................................................................8
Function Speed .....................................................8
Drive System .........................................................8
Tires ......................................................................8
Electrical System ...................................................8
Hydraulic System ..................................................8
Engine ...................................................................8
Fuel Tank Capacity ................................................8
Ambient Air Temperature Operating Range ..........8
Maximum Wind Speed ..........................................8
Engine Specications ...............................................9
Engine Oil Viscosity ................................................10
Cummins B3.3 .....................................................10
Deutz F4L-2011F .................................................10
Chapter 3 – Safety
Electrocution Hazards ............................................11
Minimum Safe Approach Distance .........................11
Prestart Inspection..................................................12
Work Place Inspection and Practices .....................12
Operation ................................................................12
Tip-Over and Falling Hazards .................................12
Electrical System ....................................................13
Hydraulic System....................................................13
Engine and Fuel Handling Precautions ..................13
Placards and Decals...............................................14
Chapter 4 – Safety Devices
Emergency Stop Controls.......................................15
Emergency Power System .....................................15
Emergency Lowering Knob ....................................15
Ground Operation Switch .......................................16
Platform Foot Switch ..............................................16
Guardrails ...............................................................16
Lanyard Anchors.....................................................16
Tilt Alarm .................................................................16
Platform Overload Sensing System........................17
Engine Protection Systems ....................................17
High Engine Temperature Alarm .........................17
Low Oil Pressure Alarm .......................................18
Horn ........................................................................18
Drive Motion Alarm .................................................18
Flashing Light .........................................................18
Driving Lights ..........................................................18
Platform Work Lights ..............................................18
Chapter 5 – Gauges and Displays
Hour Meter..............................................................19
Engine Temperature Gauge ...................................19
Ammeter .................................................................19
Engine Air Filter Gauge ..........................................19
Fuel.........................................................................19
Engine Oil ...............................................................20
Hydraulic Fluid Filter Gauge ...................................20
Fluid Level and Temperature Gauge ......................20
Chapter 6 – Controls
Battery Disconnect Switch ......................................21
Lower Controls .......................................................21
Emergency Stop Button ......................................21
Control Selector Switch .......................................21
Start Button .........................................................21
Ground Operation Switch ....................................22
Rotation Switch ...................................................22
Boom Elevation Switch .......................................22
Boom Extend/Retract Switch ..............................22
Jib Articulation Switch – TB66J only ....................22
Platform Level Switch ..........................................22
Platform Rotation Switch .....................................22
Engine/Emergency Power Switch .......................22
Throttle Switch ....................................................22
Circuit Breaker Reset Buttons .............................22
Upper Controls .......................................................23
Start Switch .........................................................23
Emergency Stop Button ......................................23
Speed Knob ........................................................24
Drive/Boom Selector Switch ................................24
Boom Joystick .....................................................24
Drive Joystick ......................................................24
Drive Range Switch .............................................24
Jib Articulation Switch – TB66J only ....................24
Boom Extend/Retract Switch ..............................24
TB60/66J – 0084030EE
Page 4
Table of Contents
Platform Rotate Switch ........................................24
Platform Level Switch ..........................................24
Engine/Emergency Power Switch .......................24
Throttle Switch ....................................................25
Horn Button .........................................................25
Platform Foot Switch ...........................................25
Machine/Generator Switch .....................................25
Driving and Platform Work Lights ...........................25
Chapter 7 – Prestart Inspection
Operator’s Manual ..................................................27
Engine ....................................................................27
Oil Level ..............................................................27
Coolant ................................................................27
Fuel Tank .............................................................27
Fuel Line .............................................................28
Air Filter ...............................................................28
Charging System ................................................28
Electrical System ....................................................28
Emergency Power Battery ..................................28
Battery Fluid Level ..............................................29
Battery Terminals .................................................29
Cables and Wiring Harness ....................................29
Hydraulic System....................................................29
Fluid Level ...........................................................29
Fluid Filter ...........................................................29
Hoses, Tubes, and Fittings ..................................29
Tires and Wheels ....................................................30
Lower Control Station .............................................30
Operating Controls ..............................................30
Emergency Stop .................................................. 31
Emergency Power ...............................................31
Emergency Lowering ..............................................31
Level Sensor...........................................................31
Flashing Light .........................................................31
Sandblast Protection Kit .........................................31
Structures ...............................................................32
Weldments ..........................................................32
Slide Pads ...........................................................32
Wire Ropes .........................................................32
Fasteners ............................................................32
Upper Control Station .............................................33
Guardrail System ................................................33
Lanyard Anchors .................................................33
Operating Controls ..............................................33
Emergency Stop .................................................. 34
Emergency Power ...............................................34
Horn ....................................................................34
AC Generator ......................................................34
Drive Motion Alarm ..............................................34
Driving and Work Lights ......................................34
Platform Control Cover ........................................34
Placards and Decals...............................................34
Prestart Inspection Checklist ..................................38
Chapter 8 – Operation
Cold Weather Start-Up ...........................................39
Engine Cold Weather Start Kit ................................39
Cummins – Block Heater ....................................39
Deutz – Manifold Preheater ................................39
Hydraulic System Cold Weather Warm-Up ............39
Preparing for Operation ..........................................40
Lower Controls .......................................................40
Upper Controls .......................................................40
Boom Operation ..................................................41
Driving and Steering ............................................ 41
Drive Speeds .......................................................42
Motion Warning Alarm .........................................42
Platform Overload Sensing System........................42
Four Wheel Drive....................................................43
AC Generator .........................................................43
Air Line ...................................................................44
Driving Lights ..........................................................44
Platform Work Lights ..............................................44
Chapter 9 – Stowing and Transporting
Stowing ...................................................................45
Transporting ...........................................................45
Driving .................................................................45
Winching .............................................................46
Hoisting ...............................................................46
Securing for Transport .........................................47
Chapter 10 – Emergency Operation
Emergency Power System .....................................49
Lower Controls ....................................................49
Upper Controls ....................................................49
Emergency Lowering ..............................................50
Chapter 11 – Troubleshooting
Troubleshooting Chart ............................................51
Appendix A – Glossary
Limited Warranty
TB60/66J – 0084030EE
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.
Proportional boom lift, swing, and drive control
Four wheel drive
180 degree hydraulic platform rotation
Two safety lanyard attachments
Manual lowering valve at chassis
Hydraulic oil level and temperature gauges
3.5 degree tilt alarm
Hour meter
Ammeter
Horn
Coolant temperature gauge
High engine temperature shut down
Low oil pressure shut down
Foam lled tires
Lifting lugs
Battery operated emergency power system
360 degree continuous turntable rotation
76 cm x 152 cm (30″ x 60″) steel 227 kg (500 lb)
capacity platform
Platform gravity gate
Platform overload sensing system
Five year limited warranty
The machine may be powered with one of the following
engines.
Cummins 3.3B – Diesel
Deutz F4L-2011F – Diesel
The aerial platform has been manufactured to conform
to European Directive 98/37/EC and European Standard
EN280.
76 cm x 234 cm (30″ x 92″) aluminum 272 kg
(600 lb) capacity platform – TB60 only
76 cm x 152 cm (30″ x 60″) aluminum 294 kg
(650 lb) capacity platform – TB60 only
76 cm x 244 cm (30″ x 96″) steel 227 kg
(500 lb) capacity platform – TB60 only
76 cm x 234 cm (30″ x 92″) aluminum 227 kg
(500 lb) capacity platform – TB66J only
Operator’s Manual
This manual provides information for safe and proper
operation of the aerial platform. 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.
Options
The following options may be provided on the machine.
Two wheel drive
Platform control cover
Platform work lights – ood lights
Flashing light – amber
Platform swinging gate
Sandblast protection kit
Driving lights – two headlights and two rear lights
Spark arrestor mufer – Deutz engines
Cold weather start kit
AC generator – hydraulic powered, 220v, 50Hz
Drive motion alarm
Airline to platform
Bumpguard
TB60/66J – 0084030EE 1
Indicates a potentially hazardous situation which,
if not avoided, could result in death or serious injury.
Indicates a potentially hazardous situation which,
if not avoided, may result in minor or moderate
injury. It may also be used to alert against unsafe
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.
AWarning
ACaution
Page 6
Chapter 1 – Introduction
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.
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.
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.
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
2 TB60/66J – 0084030EE
Page 7
Chapter 2 – Specications
Component Identication – TB60
Upper Controls
Fuel Tank
Operator’s
Manual
Wiring Box
Lower Controls
Emergency
Lowering
Valve
Engine
Hydraulic Fluid Tank
And Filter
Right Side
Battery Disconnect Switch
Batteries
Chassis
Main Boom
Steer Wheels
Platform
Intermediate
Boom
Tip Boom
Steer Wheels
Platform
Foot Switch
Left Side
TB60/66J – 0084030EE 3
Page 8
Chapter 2 – Specications
Component Identication – TB66J
Upper Controls
Fuel Tank
Operator’s
Manual
Wiring Box
Lower Controls
Emergency
Lowering
Engine
Valve
Hydraulic Fluid Tank
And Filter
Steer Wheels
Right Side
Battery Disconnect Switch
Batteries
Main Boom
Chassis
Tip Boom
Steer Wheels
Intermediate
Boom
Platform
Jib
Platform
Foot Switch
Left Side
4 TB60/66J – 0084030EE
Page 9
Working Envelope – TB60
Meters
(Feet)
21.3
(70)
18.3
(60)
15.2
(50)
12.2
(40)
Chapter 2 – Specications
9.1
(30)
6.1
(20)
3
(10)
0
(0)
3
(10)
18.3
(60)
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3
(10)
0
(0)
3
(10)
TB60/66J – 0084030EE 5
Page 10
Chapter 2 – Specications
Working Envelope – TB66J
Meters
(Feet)
21.3
(70)
18.3
(60)
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3
(10)
0
(0)
1.5
(5)
18.3
(60)
6 TB60/66J – 0084030EE
15.2
(50)
12.2
(40)
9.1
(30)
6.1
(20)
3
(10)
0
(0)
3
(10)
Page 11
General Specications – TB60
Chapter 2 – Specications
Aerial Platform
Working height 20.1 m (66′)
Maximum platform height 18.3 m (60′)
Horizontal reach 15.2 m (50′)
Main boom
Articulation -16° to +72°
Extension 0 to 8.33 m (0 to 328″)
Turntable rotation 360° continuous
Turning radius, inside 4.7 m (15′ 5″)
Wheelbase 3 m (10′)
Ground clearance 33 cm (13″)
Maximum wheel load 4,808 kg (10,600 lbs)
Maximum ground pressure 442 kPa (64 psi)
Weight, GVW
Approximate 9,857 kg (21,730 lbs)
Stowed width 2.5 m (8′ 0.5″)
Stowed length 9.4 m (30′ 10″)
Stowed height 2.7 m (8′ 9″)
Platform
Dimensions
Standard steel 76 cm x 152 cm (30″ x 60″)
Rated work load 227 kg (500 lb)
Optional aluminum 76 cm x 244 cm (30″ x 96″)
Rated work load 272 kg (600 lb)
Optional aluminum 76 cm x 152 cm (30″ x 60″)
Rated work load 294 kg (650 lb)
Optional steel 76 cm x 244 cm (30″ x 96″)
Rated work load 227 kg (500 lb)
Rotation 90° CW to 80° CCW
Maximum number of occupants 2 people
Optional AC generator 220 VAC
Drive System
Standard Four wheel drive
Optional Two wheel drive
Gradeability – theoretical 4x4 78%
Tires
Foam Filled, 12 ply 38 cm x 50 cm (15″ x 19.5″)
Electrical System
Voltage 12 V DC negative chassis ground
Source Two - 12 V 550 CCA batteries
Fluid recommended distilled water
Hydraulic System
Maximum pressure 17,250 kPa (2,500 psi)
Reservoir capacity 99 l (26.1 US gal)
System capacity 132 l (35 US gal)
Maximum operating temperature 93°C (200°F)
Hydraulic uid recommended
Above -12°C (10°F) Mobil DTE-13M (ISO VG32)
Below -12°C (10°F) Mobil DTE-11M (ISO VG15)
Engine
Diesel Cummins B3.3
Diesel Deutz F4L-2011F
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
Function Speed
Turntable rotation, 360 degrees 140 to 150 seconds
Main boom
Up 64 to 75 seconds
Down 64 to 75 seconds
Extend 60 to 70 seconds
Retract 50 to 60 seconds
Platform rotation, 180 degrees 16 to 20 seconds
Drive
High, booms stowed 4.8 km/h (3.0 mph)
Low, booms elevated 0.8 km/h (0.5 mph)
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
TB60/66J – 0084030EE 7
Page 12
Chapter 2 – Specications
General Specications – TB66J
Aerial Platform
Working height 21.9 m (72′)
Maximum platform height 20.1 m (66′)
Horizontal reach 17.1 m (56′)
Main boom
Articulation -1° to +72°
Extension 0 to 8.33 m (0 to 328″)
Turntable rotation 360° continuous
Turning radius, inside 4.7m (15′ 5″)
Wheelbase 3 m (10′)
Ground clearance 33 cm (13″)
Maximum wheel load 5,900 kg (13,000 lbs)
Maximum ground pressure 11.3 kPa (78 psi)
Weight, GVW
Approximate 11,916 kg (26,220 lbs)
Stowed width 2.4 m (7′ 11.5″)
Stowed length 10 m (33′)
Stowed height 2.7 m (8′ 9″)
Platform
Dimensions
Standard steel 76 cm x 152 cm (30″ x 60″)
Rated work load 227 kg (500 lb)
Optional aluminum 76 cm x 244 cm (30″ x 96″)
Rated work load 227 kg (500 lb)
Rotation 90° CW to 80° CCW
Maximum number of occupants 2 people
Optional AC generator 220 VAC
Drive System
Standard Four wheel drive
Optional Two wheel drive
Gradeability – theoretical 4x4 65%
Tires
Foam Filled, 12 ply 38 cm x 50 cm (15″ x 19.5″)
Electrical System
Voltage 12 V DC negative chassis ground
Source Two - 12 V 550 CCA batteries
Fluid recommended distilled water
Hydraulic System
Maximum pressure 17,250 kPa (2,500 psi)
Reservoir capacity 99 l (26.1 US gal)
System capacity 132 l (35 US gal)
Maximum operating temperature 93°C (200°F)
Hydraulic uid recommended
Above -12°C (10°F) Mobil DTE-13M (ISO VG32)
Below -12°C (10°F) Mobil DTE-11M (ISO VG15)
Engine
Diesel Cummins B3.3
Diesel Deutz F4L-2011F
Fuel Tank Capacity
Diesel 151 l (40 US gal)
Function Speed
Turntable rotation, 360 degrees 165 to 175 seconds
Main boom
Up 64 to 75 seconds
Down 64 to 75 seconds
Extend 65 to 75 seconds
Retract 35 to 45 seconds
Jib
Up 7 to 13 seconds
Down 7 to 13 seconds
Platform rotation, 170 degrees 16 to 20 seconds
Drive
High, booms stowed 4.8 km/h (3.0 mph)
Low, booms elevated 0.96 km/h (0.6 mph)
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
8 TB60/66J – 0084030EE
Page 13
Engine Specications
Chapter 2 – Specications
Engine CID Fuel Grade Coolant
Diesel
Cummins
B3.3
3.26 liter
(199 cu. in)
ASTM No. 2D fuel with a mini-
mum Cetane number of 40.1 For
operating temperature below 0°C
(32°F) use winterized No. 2D.
50% Water
50% Antifreeze
Operating
Temperature
60°C to 100°C
2
140°F to 212°F
Oil
Capacity
7.5 liter (2
US gal)
Oil
Grade
SAE
15W-40
API
CH4/SG
Diesel
1
6.0 liter
(1.59 US
gal)
API: CD
or higher
Air
78°C to 95°C
172°F to 203°F
Deutz
F4L-2011F
2.0 liter
(125 cu. in.)
DIN 51 601 (February 1986).
BS 2869: A1 and A2 (with A2
refer to Deutz manual about
sulfur content)
ASTM D 975-88: 1-D and 2-D
CEN EN 590 or DIN EN 590
NATO Code F-54 and F-75
Fo r o peratin g t emper atures
1
below 0°C (32°F) use winter
grade diesel.
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
Note 3: Refer to the engine manufacturers manual for specic lubricating oil recommendations and specications.
for specic coolant recommendations and specications.
3
3
TB60/66J – 0084030EE 9
Page 14
Chapter 2 – Specications
Engine Oil Viscosity
Cummins B3.3
Deutz F4L-2011F
10 TB60/66J – 0084030EE
Page 15
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 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 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
Table 1 – Minimum Safe Approach Distance
Minimum Safe Approach Distance
Feet Meters
45 13.72
Figure 3 – Minimum Safe Approach Distance
TB60/66J – 0084030EE 11
Page 16
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.
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 will 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.
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.
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.
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.
12 TB60/66J – 0084030EE
Page 17
Chapter 3 – Safety
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will 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.
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.
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 could
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.
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.
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.
TB60/66J – 0084030EE 13
Hydraulic uid escaping under pressure can have
enough force to inject uid into the esh. Serious
infection or reaction will 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.
ADanger
Page 18
Chapter 3 – Safety
ADanger
Engine exhaust contains carbon monoxide, a poi-
sonous gas that is invisible and odorless. Breathing
engine exhaust fumes will 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.
14 TB60/66J – 0084030EE
Page 19
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.
Emergency
Stop Button
At the upper controls, the emergency stop is a two-position push button (refer to Figure 4.2).
Emergency
Stop Button
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.
Engine/Emergency
Power Switch
Emergency Power System
The emergency power system includes a back-up
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 engine/emergency power switch (refer
to Figure 4.1 and 4.2) down to activate the emergency
power system.
Engine/Emergency
Power Switch
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.
The length of time the pump can be operated depends
on the capacity of the battery.
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 will not work. The knob is on the base
end of the main boom lift cylinder (refer to Figure 4.3)
under the left side of the turntable.
Emergency
Lowering Knob
Figure 4.3 – Emergency Lowering Knob
TB60/66J – 0084030EE 15
Page 20
Chapter 4 – Safety Devices
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 4.4) activates the upper controls.
Top Rail
Gravity
Lanyard
Anchors
Platform Foot
Switch
Gate
Mid Rail
Toeboard
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 4.4).
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.
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 box (refer to Figure 4.6).
Figure 4.4 – 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 4.4).
A gravity gate (refer to Figure 4.4) or an optional swinging gate (refer to Figure 4.5) allows for access to the
platform.
Swinging
Gate
Tilt Alarm
Figure 4.6 – Tilt Alarm
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will 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.
Retract and lower the main boom and then drive to a
level surface when the tilt alarm sounds.
The tilt alarm is for added protection and does not
justify operating on anything other than rm, at, level
surfaces.
Figure 4.5 – Platform
16 TB60/66J – 0084030EE
Page 21
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 4.7) will blink until the excess load
is removed from the platform. At that time, the machine
functions are again operational.
Platform
Overload Light
Figure 4.7 – Upper Controls
If the platform becomes signicantly overloaded, or if
an upward force on the platform exceeds approximately
445 N (100 lbs), 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 4.7 and 4.8).
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.
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:
Platform
Overload Light
Figure 4.8 – Lower Control Panel
• 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 constant tone alarm will sound to warn against high
engine temperature or low oil pressure.
The engine will shut-down if the operating temperature
exceeds a preset level or if the oil pressure is too low
for safe operation. An engine temperature gauge is on
the lower control panel (refer to Figure 4.8).
High Engine Temperature Alarm
If the oil exceeds 110°C (230°F) an alarm will sound and
the engine will shut off. Any time there is no alternator
current being produced, an alarm will sound and the engine will shut off. This prevents high engine temperature
if the fan belt breaks.
TB60/66J – 0084030EE 17
Page 22
Chapter 4 – Safety Devices
Do not restart the engine until the condition that caused
the overheating has been corrected.
Low Oil Pressure Alarm
The low oil pressure alarm sounds when the engine oil
pressure is near the lower limit for safe engine operation
and the engine has shut off. Do not restart the engine
until the condition that caused the low oil pressure has
been corrected.
When 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 for
about 30 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
box. The horn is operational when the emergency stop
button and the start switches are both on, at the lower
and upper controls.
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.
The light ashes at about one ash per second when
the engine is running.
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, one on each side of the upper
control panel.
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.
Flashing Light
An optional amber ashing light may be located on
the top of the boom near the base end (refer to Figure
4.9). The ashing light warns personnel that the aerial
platform is in the area.
Flashing Light
Figure 4.9 – Flashing Light
Figure 4.10 – Platform Work Lights
18 TB60/66J – 0084030EE
Page 23
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 wiring box on the left
side of the lower controls (refer to Figure 5.1). It measures the accumulated engine operating time.
Hour
Meter
On liquid cooled engines it shows the temperature of the
water and antifreeze mixture in the engine block. The
gauge on air cooled engines shows the temperature of
the engine oil as the oil leaves the lter.
Ammeter
The ammeter is located on the lower control panel (refer
to Figure 5.2). 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 “0.”
Engine Air Filter Gauge
The air lter gauge (refer to Figure 5.3) is located above
the lower control panel. The gauge measures the air
pressure between the intake manifold and the air lter.
Air Filter
Gauge
Figure 5.1 – Wiring Box
Engine Temperature Gauge
The temperature gauge is located on the lower control
panel (refer to Figure 5.2).
Engine
Temperature
Gauge
Ammeter
Reset Button
Figure 5.3 – 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.
Fuel
The fuel gauge is located on top of the fuel tank (refer
to Figure 5.4). The gauge indicates the uid level in
fractions of a full tank.
Note
Do not run a diesel fuel tank empty. Air in the fuel line
makes the engine hard to start.
Figure 5.2 – Lower Controls
TB60/66J – 0084030EE 19
Page 24
Chapter 5 – Gauges and Displays
Fuel Gauge
Figure 5.4 – Fuel Tank Gauge
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 5.5) is located on the
return line lter on the left side of the reservoir. The res-
ervoir is behind the door on the left side of the turntable.
During 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.
Fluid Level and Temperature Gauge
A gauge on the right end of the reservoir displays the
level and temperature of the hydraulic uid (refer to
Figure 5.6).
Fluid Level and
Temperature Gauge
Figure 5.6 – Hydraulic Fluid Gauge
If the temperature rises above 93°C (200°F) stop ma-
chine operation and let the uid cool before resuming
operation.
Filter Gauge
Figure 5.5 – Hydraulic Fluid Filter Gauge
20 TB60/66J – 0084030EE
Page 25
Chapter 6 – Controls
ADanger
Pinch points may exist between moving components. Death or serious injury can result from being
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.
Battery Disconnect Switch
The battery disconnect is located behind the door on
the left side of the turntable above the batteries (refer
to Figure 6.1).
Battery Disconnect Switch
• Ground operation switch
• Rotation switch
• Boom elevation switch
• Boom extend/retract switch
• Jib articulation switch – TB66J only
• Platform level switch
• Platform rotation switch
• Engine/emergency power switch
• Throttle switch
Boom Elevation
Control
Boom Extend/
Retract Switch
Platform Rotate
Platform
Level
Selector
Emergency Stop
Engine/Emergency
Power
Ground
Operation
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.
Lower Controls
The lower controls (refer to Figure 6.2) are located on the
right side of the turntable. Boom and platform functions
can be operated from the lower controls. The following
are located on the lower control panel.
• Emergency stop button
• Control selector switch
• Start switch
Boom Rotate
Engine
Throttle
Jib Switch
Start
Button
Figure 6.2 – Lower Controls
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.
An alarm sounds when the switch is turned on to warn
others that the machine engine is being started.
Start Button
Push the start button until the engine starts, then release
it to on. If the engine dies, the control switch must be
turned to off before the engine can be restarted.
TB60/66J – 0084030EE 21
Page 26
Chapter 6 – Controls
Ground Operation Switch
Hold the switch upward continually to operate the
machine from the lower controls. This switch is spring
returned to the off position.
Rotation Switch
The rotation switch (refer to Figure 6.2) 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 (refer to Figure 6.2) 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 Extend/Retract Switch
The boom extend/retract switch (refer to Figure 6.2) 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 tip boom. Hold
the switch to the right to retract the tip boom.
Jib Articulation Switch – TB66J only
The jib switch (refer to Figure 6.2) is used to raise or
lower the jib. The switch is spring returned to the center
off position.
Engine/Emergency Power Switch
Hold the engine/emergency power switch (refer to Figure
6.2) 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 6.2) is used to set the
engine throttle speed to 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.
Placing the ground controls switch in the on position
also increase the engine speed to mid-range
Circuit Breaker Reset Buttons
The circuit breaker reset buttons are located on the front
of the wiring box. There is a reset button for main, run
and throttle (refer to Figure 6.3).
Hold the switch up to raise the jib. Hold the switch down
to lower the jib.
Platform Level Switch
The platform level switch (refer to Figure 6.2) 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 Rotation Switch
The platform rotation switch (refer to Figure 6.2) 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.
Circuit Breaker Reset Buttons
Figure 6.3 – Wiring Box
The upper control panel has a circuit breaker for the
swing (turntable rotation), lift, drive and main control
circuits. The circuit breakers are on the front of the upper control panel (refer to Figure 6.4).
22 TB60/66J – 0084030EE
Page 27
Chapter 6 – Controls
Circuit Breaker Reset Buttons
Start Switch
Figure 6.4 – 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 6.5) 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
• Speed knob
• Drive/boom selector switch
• Boom joystick
• Drive joystick
• Drive range switch
• Jib articulation switch – TB66J only
• Platform level switch
• Boom extend/retract switch
• Engine/emergency power switch
• Throttle switch
• Platform rotate switch
Engine/Emergency
Power
Drive Range
Drive/Boom
Selector
Platform
Level
Drive Joystick
Engine
Throttle
Boom Extend/
Retract Switch
Jib Switch
Boom Joystick
Emergency Stop
Speed
Knob
Platform Rotate
Figure 6.5 – Upper Control Panel Top
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 6.4).
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
6.5). Push the button in to disconnect power to all con-
trol 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.
Push the emergency stop button in when the upper
controls are not in use to protect against unintentional
operation.
TB60/66J – 0084030EE 23
Page 28
Chapter 6 – Controls
Speed Knob
Use the boom speed control knob (refer to Figure 6.5)
to control the speed of the following boom functions.
• Boom extend/retract
• Jib up/down
• Platform rotate clockwise/counterclockwise
• Level
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.
Drive/Boom Selector Switch
Place the drive/boom selector switch (refer to Figure 6.5)
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 (refer to Figure 6.5) 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.
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.
Note
The steering wheels are not self-centering. Set the steering wheels straight ahead after completing a turn.
Drive Range Switch
The drive range switch (refer to Figure 6.5) has two
positions to select drive wheel operation:
• HI – high speed and low torque operation.
• LO – low speed and high torque operation.
Jib Articulation Switch – TB66J only
The jib switch (refer to Figure 6.5) 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.
Boom Extend/Retract Switch
The boom extend/retract switch (refer to Figure 6.5)
is used to extend or retract the tip and intermediate
booms. The switch is spring returned to the center off
position.
Hold the switch down to extend the booms. Hold the
switch up to retract the booms.
Platform Rotate Switch
The platform rotate switch (refer to Figure 6.5) 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 left to rotate the platform clockwise. Hold the switch to the right to rotate the platform
counterclockwise.
Platform Level Switch
The platform level switch (refer to Figure 6.5) is used to
level the platform oor with respect to the ground. The
switch is spring returned to the center off position.
Drive Joystick
The drive joystick (refer to Figure 6.5) is used to control
forward and reverse motion of the aerial platform. It is
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.
also used to steer the machine. The steering and drive
functions may be operated simultaneously.
Engine/Emergency Power Switch
The engine/emergency power switch (refer to Figure
Note
The distance the joystick is moved is proportional to the
6.5) is spring returned to the engine position for aerial
platform engine operation.
speed of the function.
Place the switch in the emergency power position and
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.
hold to operate aerial platform functions using the emer-
gency power system. Release the switch to disengage
the emergency power system.
Note
The emergency power system is for lowering the plat-
form during an emergency and is not intended for normal
machine operation.
24 TB60/66J – 0084030EE
Page 29
Chapter 6 – Controls
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 6.5) is used to set the
engine throttle speed to either low or high idle.
Place the switch in the low position for normal machine
operation and in high to drive at maximum speed.
The engine has a three speed throttle operation from
the upper controls. Independent of the throttle switch,
the platform foot switch, when depressed, increases the
engine speed from low to mid-range.
High engine speed is obtained when the main boom
is horizontal, the foot switch is depressed, the throttle
switch is in the high position, and the drive joystick is
moved out of neutral into the forward or reverse position.
The machine can be driven in mid-range engine speed
with the throttle switch place in the low position.
Horn Button
The horn button is on the right side of the upper control
panel. Press the button to sound the horn.
Machine/Generator Switch
The switch for the optional AC generator is located on
the front of the upper control panel.
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 (refer to Figure 6.7).
Platform Foot Switch
The upper controls are interlocked through the platform
foot switch (refer to Figure 6.6). Step down on and hold
the platform foot switch to activate the drive and boom
functions from the upper controls.
Platform Foot
Switch
Figure 6.6 – Platform
Figure 6.7 – Platform Work Lights
TB60/66J – 0084030EE 25
Page 30
Chapter 6 – Controls
26 TB60/66J – 0084030EE
Page 31
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 front cowling door (refer to Figure 7.1) on the right side of the
machine.
Operator’s Manual Holder
Coolant
Cummins engines are are liquid cooled. When the engine is cold, there should be about 2.5 cm (1″) of coolant
in the bottom of the reservoir (refer to Figure 7.2).
Coolant
Reservoir
Figure 7.2 – Coolant Reservoir
Coolant leaks are easily visible on the ground. Check
under the chassis for coolant that has leaked.
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 sides 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.
Make sure the radiator core and ventilation openings on
the cover are free of bugs, dirt or foreign material that
might restrict airow.
Deutz engines are air cooled. Visually inspect the air
intake and fan (refer to Figure 7.3) to be sure they are
free of obstructions that could stop or slow the ow of
air. Inspect the fan belt to see that it is in place and not
cracked.
Fan
Fan Belt
Figure 7.3 – Air Intake
Fuel Tank
Check the fuel level (refer to Figure 7.4) and add fuel if
necessary. Make sure the cap is securely fastened on
gasoline or diesel tanks.
TB60/66J – 0084030EE 27
Page 32
Chapter 7 – Prestart Inspection
4. Check the clear zone after running the engine for
30 seconds.
Fuel Gauge
Figure 7.4 – Fuel Tank
Fuel Line
Visually inspect the entire length of the fuel line for leaks
and damage. Start at the fuel tank and trace the line to
the engine inspecting.
Air Filter
The air lter gauge (refer to Figure 7.5) has an indicator
to show when the lter needs replaced.
Air Filter
Gauge
• If the indicator is red, replace the lter.
• If the indicator is clear, the lter is OK.
5. Shut off the engine.
Charging System
When the engine is running, the ammeter needle (refer
to Figure 7.5) should be to the right of “0.” Left of the
“0” is discharging.
Electrical System
Electrical power is supplied from two, 550 CCA, 12 volt
batteries (refer to gure 7.6). These batteries supply 12
volt DC electrical power to operate the aerial platform
electrical and electrohydraulic components.
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.
Ammeter
Reset Button
Figure 7.5 – Gauges at 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 control switch and press the
start button to turn the engine on.
The batteries are behind the door on the left side of the
turntable.
Emergency Power Battery
The emergency power battery (refer to Figure 7.6) is
behind the door on the right side of the chassis. The
battery is automatically charged when the engine is
running.
Terminals
Figure 7.6 – Emergency Power Battery
Caps
28 TB60/66J – 0084030EE
Page 33
Include the emergency power battery when inspecting
and servicing the electrical system.
Chapter 7 – Prestart Inspection
Battery Fluid Level
Remove the caps from each battery (refer to Figure 7.6).
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.
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 (refer to Figure 7.6). 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. Make sure the cables and wires are properly
routed to avoid sharp edges, pinching, and scufng.
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 will result if medical treatment
is not given immediately. In case of injury by escap-
ing hydraulic uid, seek medical attention at once.
The hydraulic reservoir is behind the door on the left side
of the turntable. The pump is mounted on the engine.
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).
Fluid Level and
Temperature Gauge
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.
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.
Figure 7.8 – Hoses, Tubes, and Fittings
TB60/66J – 0084030EE 29
Page 34
Chapter 7 – Prestart Inspection
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.
Control Selector
Switch
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.
Punctures caused by bolts, screws or nails are not a
problem for foam lled tires.
Emergency
Stop Button
Start Button
Engine/Emergency
Power Switch
Ground Operation
Switch
Figure 7.10 – 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.
Lower Control Station
With no personnel in the platform, test the operation
of each control from the lower controls (refer to Figure
7.10).
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 will 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.
30 TB60/66J – 0084030EE
Page 35
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 in the emergency power position and the ground operation switch
in the on position to operate the aerial platform from the
lower controls using the emergency power system.
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 (refer
to Figure 7.11).
Use the following procedure to test the emergency
lowering system.
1. Use the lower controls to raise the main boom.
4. Turn the knob to close the cylinder bleed down
valve.
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 to just
above horizontal.
4. Open the rear door on the left side of the machine
to access the level sensor (refer to Figure 7.12).
Emergency
Lowering Knob
Figure 7.11 – Emergency Lowering Knob
2. Turn the engine off.
ADanger
Pinch points may exist between moving components. Death or serious injury will result from
becoming trapped between components. Stand
clear of moving components while test operating
the machine.
3. Slowly turn the knob to open the bleed down valve.
The boom should slowly lower by gravity.
Figure 7.12 – Level Sensor
5. Pull the level sensor to the side as far as possible
to activate the tilt alarm.
6. If the alarm does not sound, remove the machine
from service until the problem is corrected.
7. Lower the main boom.
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.
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.
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.
TB60/66J – 0084030EE 31
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.
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 7.13)
between the boom sections.
Figure 7.14 – Bottom of Main Boom at Tip End
Slide Pads
Slide Pads
Figure 7.13 – Boom Sections
Use the lower controls to raise the main boom to horizontal. Extend the tip boom about 30 cm (1′). Visually
inspect the slide pads 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.
Wire Ropes
Visually inspect the wire ropes where they are connected
to the outside of the main boom. There is a wire rope
connection on the bottom of the tip end of the main boom
(refer to Figure 7.14) and also one on the top of the base
end of the boom (refer to Figure 7.15).
Figure 7.15 – Top of Main Boom at Base End
Also inspect the wire ropes just inside the base end of
the main boom (refer to Figure 7.16).
Figure 7.16 – 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.
32 TB60/66J – 0084030EE
Page 37
Chapter 7 – Prestart Inspection
Raise the main boom to access the rotation bearing
bolts in the turntable (refer to Figure 7.17).
Inspect the rotation bearing bolts to ensure that none
are missing, damaged or loose.
Rotation Bearing Bolts
Figure 7.17 – Inside Turntable
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 7.18) includes the
top rail, mid rail, toeboards and a gravity gate or optional
swinging gate.
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
There are two lanyard anchors below the upper control
panel (refer to Figure 7.18).
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. Insert the key in the control selector and
turn the switch to the upper control position.
3. At the upper controls (refer to Figure 7.19), pull the
emergency stop button outward.
Engine/Emergency
Power
Drive Range
Drive/Boom
Selector
Engine
Throttle
Boom Extend/
Retract Switch
Emergency Stop
Speed
Knob
Top Rail
Gravity
Lanyard
Anchors
Platform Foot
Switch
Gate
Mid Rail
Toeboard
Figure 7.18 – 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.
Jib Switch
Boom Joystick
Platform Rotate
Platform
Level
Drive Joystick
Figure 7.19 – Upper Control Panel Top
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 will 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. Place the drive/boom selector switch in the boom
position.
TB60/66J – 0084030EE 33
Page 38
Chapter 7 – Prestart Inspection
7. Test the platform foot switch by moving a boom
function switch 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 to just below horizontal the machine
should travel in low speed only. To operate in high
speed the booms must be stowed.
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 up 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 to ensure that it sounds to warn
personnel in the area.
AC Generator
With the engine running, place the machine/generator
control (refer to Figure 7.20) 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.
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 working 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.
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 dealers.
The safety related placards and decals are illustrated
Machine/
Generator Switch
Figure 7.20 – Upper Control Panel Front
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.
34 TB60/66J – 0084030EE
on the following pages.
Page 39
T his m ac hine is not electr ic ally ins ul ated .
Do no t op era te in pro xim ity to high
vo ltag e powe r l ine s and pa rts !
0162 336 E
0162366
Right Side
0074311
(One per Cylinder)
0162366
0162336E
Chapter 7 – Prestart Inspection
0070901
0074311
0162366
0162336E
0070901
0162366
TB66J Right Side
0162336E
TB60/66J – 0084030EE 35
Page 40
Chapter 7 – Prestart Inspection
01909 89E
0190989E
0190989E
0073298
Right Side
0074210
0323897
0073298
0323897
0074210
36 TB60/66J – 0084030EE
Page 41
0162366
0162366
T his m ac hine is not electr ic ally ins ul ated .
Do no t op era te in pro xim ity to high
vo ltag e powe r l ine s and pa rts !
0162 336 E
0162336E
Chapter 7 – Prestart Inspection
0162366
Front
0162336E
0073298
0162366
0162336E
Left Side
0073298
0072531
0072531
Platform
0072530
Upper Control Panel Front
TB60/66J – 0084030EE 37
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Page 42
Chapter 7 – Prestart Inspection
Prestart Inspection Checklist
Item Ok
Operator’s Manual
In manual holder
Engine
Oil level Between full and add marks
Coolant Air intake and fan free of obstructions. Belt in good
condition
Radiator Cap tight, good condition and clean
Fuel tank and line Tank full, cap in place and tight/no leaks
Air lter Clear indicator
Charging system Proper operation
Cold weather start kit No damage of 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
Hydraulic System
Fluid level Between full and add marks
Fluid lter Verify operation in the green zone
Hose, tubes and ttings No leaks
Cold weather warm-up kit Proper operation
Tires and Wheels
Foam lled Good condition
Lower Control Station
Operating controls Proper operation
Emergency stop and power Shuts off lower controls/proper operation
Emergency Lowering
Level Sensor
Flashing Light
Sandblast Protection Kit
Bumpguard
Proper operation
Sounds tilt alarm
Proper operation
In place and proper operation
In place, no damage or deformation
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
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.
Electrical power outlet Proper operation of outlet
Drive motion alarm Sounds when aerial platform moves
Driving and work lights Proper operation
Platform control cover In place and proper operation
Placards or Decals
In place and readable
38 TB60/66J – 0084030EE
Page 43
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 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 ANSI or national
safety regulations.
Pinch points may exist between moving components. Death or serious injury will 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 will 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.
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 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 may be an
engine block heater or a manifold air preheater. The
type of starting assist system depends on the engine
manufacturer.
The last two letters of the model number stamped on
the serial number placard indicates the engine manufacturer (refer to Figure 8.1). The serial number placard
is mounted on the front ot the turntable.
Last Two Letters
of Model Number
CU Cummins Engine block heater
DZ Deutz Manifold air preheater
Figure 8.1 – Engine Manufacturer/Start System
Refer to the engine manufacturer below for specic cold
weather start-up information for that particular engine
type and cold weather start system.
Engine
Manufacturer
Cold Weather
Start System
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 will result from a
tip-over accident. Do not exceed the capacity values
indicated on the platform rating placard.
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.
Cummins – Block Heater
Plug in the heater cord 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.
Deutz – Manifold Preheater
At the lower controls, hold the manifold heater switch on
for about a minute before turning the master switch to
start the engine. A glow plug in the manifold preheats the
air to help start the engine. Continue to hold the switch
while starting the engine. Do not release the switch until
the engine starts.
If the engine does not start within 20 seconds, continue
to hold the manifold heater switch and turn the master
switch off. Wait for one minute before trying to start the
engine again.
Hydraulic System Cold Weather Warm-Up
The hydraulic oil may be warmed by bottoming out the
boom extension cylinder. Raise the main boom so it is
horizontal and operate the boom retract function while
the machine is stowed. With the cylinder bottomed out
the oil ow will produce heat to warm the hydraulic oil.
TB60/66J – 0084030EE 39
Page 44
Chapter 8 – Operation
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
-12°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. 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.
5. Hold the appropriate toggle switch in the desired
direction.
6. Release the function toggle switch to stop movement.
7. Place the ground operation switch in the off position
when no functions are being operated.
Control Selector
Switch
Emergency
Stop Button
Start Button
Engine/Emergency
Power Switch
Ground Operation
Switch
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. 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. Refer to
Figure 8.2.
1. Pull the emergency stop button (refer to Figure 8.2)
outward. Insert the key in the control selector and
turn the switch to the lower control position.
2. Press the start button until the engine starts, then
release. The engine will not start if the control selector switch is left in the lower control position for 30
seconds or longer before starting the engine. The
control selector switch must be turned back to off
before the engine will start.
3. Let the engine warm to operating temperature.
Figure 8.2 – Lower Controls
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 control 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.
4. Pull the emergency stop outward (refer to Figure
8.3).
4. Hold the ground operation switch up while operating
the control toggle switches.
40 TB60/66J – 0084030EE
Page 45
Emergency Stop
Chapter 8 – Operation
Start Switch
Top
Figure 8.3 – 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. Turn the boom speed knob to slow.
2. Step down on the platform foot switch. This switch
must be held down to operate the upper controls.
Lanyard
Anchors
Front
4. Gradually turn the boom speed knob to control
the boom extend, jib and platform rotate function
speed.
5. Releasing the control to its neutral position, or releasing the foot switch will stop movement.
Driving and Steering
ADanger
The aerial platform can tip over if it becomes unstable. Death or serious injury will result from a tip-over
accident. Do not drive an elevated aerial platform on
soft, uneven, or sloping surfaces. Do not drive the
machine on grades that exceed 25 percent.
For operation of two wheel drive machines on grades up
to 25 percent, or four wheel drive machines on grades
up to 30 percent, it is recommended that the main boom
be near horizontal and the jib on the TB66J 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.
A 30 percent grade is a 0.91 m (36″) vertical rise in 3.05
m (10″) horizontal length.
Platform Foot Switch
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.
Figure 8.4 – Platform
3. Hold the appropriate control in the desired direction.
• when driving fast, sudden turns or stops produce
more severe reactions to platform occupants.
Always look in the direction of movement.
TB60/66J – 0084030EE 41
Page 46
Chapter 8 – Operation
• 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
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.
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 other
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.
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. 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.
Drive speed ranges are interlocked through a limit switch
that senses the main boom position. When the boom is
elevated, only the slowest drive speed will work regardless of the drive range switch 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 TB60 aerial platform if it drives faster
than 0.8 km/h (0.5 miles per hour) [6.7 m (22 feet) in
30 seconds] when the booms are elevated from the
stowed position.
Do not use the TB66J aerial platform if it drives faster
than 0.96 km/h (0.6 miles per hour) [7.9 m (26 feet) in
30 seconds] when the booms are elevated from the
stowed position.
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 8.5) will blink until the excess load
is removed from the platform. At that time, the machine
functions are again operational.
42 TB60/66J – 0084030EE
Page 47
Platform
Overload Light
Figure 8.5 – Upper Controls
Chapter 8 – 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.
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 8.5 and 8.6).
Engine
Temperature
Gauge
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.
Four Wheel Drive
The machine may be equipped with a four wheel drive
system. This system operates full time and requires no
action by the operator.
Four wheel drive machines have a “4x4” decal on each
side of the chassis and all four of the wheel hubs are
drive hubs and look the same.
AC Generator
Platform
Overload Light
Figure 8.6 – 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.
TB60/66J – 0084030EE 43
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.
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.
Page 48
Chapter 8 – Operation
Start the engine and place the machine/generator
selector switch (refer to Figure 8.7) in the generator
position.
Machine/
Generator Switch
Figure 8.7 – Upper Control Panel Front
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).
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 Figure 8.8) are
located on the top rail of the platform. The direction a
light points can be adjusted by using two 1/2″ wrenches
to loosen the clamp below the light.
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.
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.
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.
Figure 8.8 – Platform Work Lights
44 TB60/66J – 0084030EE
Page 49
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.
TB60
TB66J
Figure 9.1 – Stowed Position
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 will 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 two wheel drive machines, or 30 percent grade
capabilities of the four wheel drive machines.
A 25 percent grade is a 0.76 m (30″) vertical rise in 3.05
m (10′) horizontal length.
A 30 percent grade is a 0.91m (36″) vertical rise in 3.05
m (10″) horizontal length.
Use a winch to load and unload the aerial platform on
ramps that exceed 25 percent grade. A winch may also
be used when conditions of the ramp could cause driving to be hazardous.
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 start switch off and place the platform control box cover over the upper controls if the machine
is equipped with that option.
6. Push the lower controls emergency stop button
inward. Turn the control selector switch off and
remove the key.
7. Turn the battery disconnect switch off.
8. Close and latch the cowling doors.
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 law 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.
TB60/66J – 0084030EE 45
Page 50
Chapter 9 – Stowing and Transporting
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.
6. Retract the tip boom and raise the main boom 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 will result from a
tip-over accident. Set the drive range to low before
driving up or down a grade.
Tie-Down
Lugs
Figure 9.2 – Front Tie-Down Lugs
6. 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.
9. Place the drive range switch in the low position.
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. Remove any unnecessary tools, materials, or other
loose objects from the platform.
3. 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.
Bolt
Disconnect Plate
Figure 9.3 – Drive Wheel
7. 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.
8. At each drive wheel, remove the two bolts and return
the plate to its original position as shown in Figure
9.3.
4. Properly stow the aerial platform.
5. Attach the winch to the tie-down lugs (refer to Figure
9.2) on the front of the chassis.
46 TB60/66J – 0084030EE
9. Start the engine and operate the drive control in
forward and reverse several times to engage the
drive hubs.
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.
Page 51
Chapter 9 – Stowing and Transporting
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.
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.
Note
The lifting lugs at the rear of the chassis are farther apart
than those at the front. Rotating the turntable 180° will
place the counterweight at the rear of the chassis. This
will reduce the number of spreader bars needed by one
and sometimes two.
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.
6. Adjust the length of each chain or strap so the aerial
platform remains level when raised off the ground.
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′).
2. Inspect the lifting lugs (refer to Figure 9.4) to make
sure they are free of cracks, rust and are in good
condition. Have any damage repaired by a qualied
service technician before attempting to hoist the
machine.
Lifting Lugs
Figure 9.4 – Lifting Lugs
3. Remove all personnel, tools, materials, or other
loose objects from the platform.
3. Place a wood block under the tip end of the main
boom or jib foot (TB66J). 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 box cover over the upper controls if the machine
is equipped with that option.
6. Push the lower controls emergency stop button
inward. Turn the control selector switch off and
remove the key.
7. Turn the battery disconnect switch off.
8. Close and latch the cowling doors.
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.
TB60/66J – 0084030EE 47
Page 52
Chapter 9 – Stowing and Transporting
Figure 9.5 – Platform
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.
48 TB60/66J – 0084030EE
Page 53
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 lowering knob. Refer to Emergency
Power System, Emergency Lowering 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
Switch
Emergency
Stop Button
Start Button
Figure 10.2 – Lower Controls
5. Hold the appropriate function toggle switch in the
desired direction.
Engine/Emergency
Power Switch
Ground Operation
Switch
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
control 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
down in the emergency power position.
Upper Controls
For the upper controls to be operational:
• the battery disconnect switch must be in the on
position.
• the emergency stop button at the lower controls
must be in the on position.
• the controls selector switch at the lower controls
must be in the upper controls 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).
TB60/66J – 0084030EE 49
Page 54
Chapter 10 – Emergency Operation
Emergency Stop Engine/Emergency
Power Switch
Start Switch
Drive/Boom
Selector
Top
Figure 10.3 – Upper Controls
Platform Foot
Switch
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.
Emergency Lowering
The main boom can be lowered in an emergency using the emergency lowering knob at the base of the lift
cylinder. The emergency lowering knob allows the main
boom to be lowered only. Only use this method if the
engine will not start and the emergency power system
will not work.
Front
Use the following procedure to manually lower the main
boom.
1. Slowly turn the knob (refer to Figure 10.5) to open
the bleed down valve. Control the rate of descent
by turning the knob.
Emergency
Lowering Knob
Figure 10.5 – 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.
ADanger
Pinch points exist between boom components and
between the booms and turntable. Death or serious
injury will result if the booms or platform lowers onto
personnel. Make sure all personnel stand clear while
lowering the booms.
50 TB60/66J – 0084030EE
2. Turn the knob to close the cylinder bleed down
valve.
Page 55
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. Cummins engine – plug the block
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.
heater into a 125 v AC, 600 watt
source eight hours before starting
the engine.
Deutz engine – Hold the manifold
heater switch on for about a minute
before starting the engine. Hold the
switch on until the engine starts.
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 control selector switch
in the lower control position.
• Wait for 5 seconds and then
press the start switch to start.
Press the start button 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.
TB60/66J – 0084030EE 51
Page 56
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 control selector switch
in the upper control position.
From the upper controls:
• Turn the start switch off.
• Pull the emergency stop button
outward.
• Place the start switch in the on
position for 5 seconds and then
turn the switch to start.
Platform foot switch is activated. Do not step on foot switch while
starting the engine.
Engine dies when the control selector switch at the lower controls is
placed in the platform position.
Constant tone alarm sounds while
the engine is running.
The start switch was left in the on
position for 30 seconds or longer
Turn the start switch back to off, then
to start within 30 seconds.
before turning it to start.
The main system circuit breaker on
the upper control panel or wiring
box has tripped. The engine will not
crank.
Upper controls are not set-up properly.
Push the main system circuit breaker
button back in. If the button pops
back out, refer the problem to a
qualied service technician.
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.
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Chapter 11 – Troubleshooting
Symptom Possible Cause Corrective Action
Constant tone alarm sounds 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 has
an error.
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 boom below horizontal 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.
Pl a t f orm o v erloa d se n s o r i s
tripped.
If horn is sounding and red overload
light is on or blinking, remove weight
from the platform until the load is at
or below rated capacity.
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Chapter 11 – Troubleshooting
Symptom Possible Cause Corrective Action
Lower controls do
not work.
Battery disconnect switch turned
off.
Emergency stop switch at lower
controls is pushed in to the off position.
Control selector switch is in the platform position.
Ground operation switch not held in
the on position.
Pl a t f orm o v erloa d se n s o r i s
tripped.
Upper controls do not work. Battery disconnect switch turned
off.
Emergency stop switch at lower and
upper controls is in the off position.
Control selector switch at lower controls is in the lower control position.
Platform foot switch not engaged. Step down on platform foot switch
Pl a t f orm o v erloa d se n s o r i s
tripped.
Boom functions do not work. The drive/boom switch is in the drive
position.
Boom and drive functions seem
Hydraulic oil is cold and thick. Use cold weather hydraulic oil as
sluggish.
Place switch in the on position.
Pull the emergency stop button out
to the on position.
Place the switch in the lower control
position.
Hold the ground operation switch in
the on position while operating the
control toggle switches.
If horn is sounding and red overload
light is on or blinking, remove weight
from the platform until the load is at
or below rated capacity.
Place switch in the on position.
Place the emergency stop in the on
position.
Place switch in the upper control
position.
while operating controls.
If horn is sounding and red overload
light is on or blinking, remove weight
from the platform until the load is at
or below rated capacity.
Place the switch in the boom position.
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.
Tip boom extend/retract, jib, and
Boom speed knob set too slow. Turn knob toward fast.
platform rotate functions do not
work from the upper controls.
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.
54 TB60/66J – 0084030EE
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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 position.
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.
Pl a t f orm o v erloa d se n s o r i s
tripped.
If horn is sounding and red overload
light is on or blinking, remove weight
from the platform until the load is at
or below rated capacity.
Wheels will not turn when
winching.
Only slow drive speed works. The booms are elevated. High range
Drive hubs are engaged. Turn drive wheel disconnect plates
around so nipples point inward.
Completely lower the booms. Place
not selected.
the drive range switch in the high
position.
Tilt alarm does not work. Booms are stowed. Normal operation. The tilt alarm
is not active until the booms are
elevated.
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 button 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. 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 resuming
operation.
Stow the machine and do not operate until repairs are made.
Do not operate machine until repairs
are made.
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Chapter 11 – Troubleshooting
56 TB60/66J – 0084030EE
Page 61
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.
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.
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.
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.
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.
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.
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.
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.
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Appendix A – Glossary
TB60/66J – 0084030EE
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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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