Skyjack SJ 7135, SJ 8831, SJ 7127, SJ 8841, SJ 9250 Operating Manual

MODELS SJ 7127 SJ 7135 SJ 8831 SJ 8841 SJ 9250

Operating Manual

Mid-Size & Full-Size Rough Terrain Series (AS)

157938AA-A April 2011

This manual is based on Serial Number(s):

SJRT 71XX 34,001,951 & Above
SJRT 8831 36,000,233 & Above
SJRT 8841 40,000,728 & Above
SJRT 9250 50,000,746 & Above

Please refer to the website (www.skyjack.com) for older Serial Numbers.

Skyjack Service Center 3451 Swenson Ave. St. Charles, Illinois, 60174 USA

Phone: [phone]
Toll Free: 1-800-275-9522
Fax: [phone]
Email: [e-mail]

Parts (North America)

Toll Free: 1-800-965-4626
Toll Free Fax: [phone]
Email: [e-mail]

Parts & Service (Europe) Unit 1 Maes Y Clawdd, Maesbury Road Industrial Estate

Oswestry, Shropshire SY10 8NN UK
Phone: [phone]
Fax: [phone]
Email: [e-mail]

Skyjack Asia Pacific

Singapore
Phone: [phone]
Fax: [phone]
Email: [e-mail]

The Safety Alert Symbol identifies important
safety messages on aerial platform, safety signs
in manuals or elsewhere. When you see this
symbol, be alert to the possibility of personal
injury or death. Follow the instructions in the
safety message.

DANGER indicates an imminently hazardous situation which, if not avoided,

will result in death or serious injury.

WARNING indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury.

CAUTION indicates a potentially hazardous situation which, if not avoided,
may result in minor or moderate injury. It may also be used to alert against

This Safety Alert Symbol means attention!

Become alert! Your safety is involved.

DANGER

WARNING

CAUTION

unsafe practices.

IMPORTANT

IMPORTANT indicates a procedure essential for safe operation and which,

if not followed, may result in a malfunction or damage to the aerial platform.

Mid Size & Full Size RTs
Engine Powered December 2007 Page 3

TM

Table of Contents

Section 1 - About Your Aerial Platform ................................................................................................. 5

Reed and Heed .....................................................................................................................................................5

Safety Rules ...........................................................................................................................................................6

Section 2 - Familiarization ................................................................................................................... 11

2.1 Familiarization of SJRT Mid Size and Full Size Series .....................................................................11

2.2 Component Identification .................................................................................................................12

2.3 Visual & Daily Maintenance Inspections ..........................................................................................16

2.4 Function Tests ..................................................................................................................................26

2.5 Winching and Towing Procedure .....................................................................................................36

2.6 Emergency Lowering Procedures ...................................................................................................37

Section 3 - Operation ........................................................................................................................... 39

3.1 General .............................................................................................................................................39

3.2 Major Components ...........................................................................................................................40

3.3 Major Assemblies .............................................................................................................................41

3.4 Serial Number Nameplate ................................................................................................................41

3.5 Component Identification .................................................................................................................42

3.6 Component Identification (Special Options)....................................................................................44

3.7 Operator’s Responsibility .................................................................................................................46

3.8 Start Operation .................................................................................................................................47

3.9 Refueling Procedure .........................................................................................................................54

3.10 Loading/Unloading ...........................................................................................................................55

3.11 Guardrail Folding Procedure ............................................................................................................58

3.12 Maintenance Support Procedure .....................................................................................................60

Section 4 - Tables .................................................................................................................................. 61

Table 4.1 Standard and Optional Features ......................................................................................................61

Table 4.2 Owner’s Annual Inspection Record .................................................................................................62

Table 4.3 Specifications and Features .............................................................................................................63

Table 4.4 Maximum Platform Capacities (Evenly Distributed) ........................................................................64

Table 4.5 Floor Loading Pressure ....................................................................................................................65

Table 4.6 Tire Specifications ............................................................................................................................67

Table 4.7 Maintenance and Inspection Schedule ...........................................................................................68

Table 4.8 Operator’s Checklist .........................................................................................................................69

Section 5 - Labels .................................................................................................................................. 71

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Page 4 December 2007

Mid Size & Full Size RTs

Engine Powered

Section 1 - About Your Aerial Platform Read and Heed

Rev AB - Sept 9/11

SKYJACK is continuously improving and expanding product features on its equipment, therefore, specifications
and dimensions are subject to change without notice.

Aerial Platform and Mobile Elevating Work Platform Definition

A mobile device that has a positionable platform supported from ground level by a structure.

Purpose of Equipment

The SKYJACK Rough Terrain’s mid and full size aerial platforms are designed to transport and raise personnel, tools
and materials to overhead work areas.

Use of Equipment

The aerial platform is a highly maneuverable, mobile work station. Work platform elevation and elevated driving
must only be done on a firm level surface. It can be driven over uneven terrain only when the platform is fully
lowered.

Manual

The operating manual is considered a fundamental part of the aerial platform. It is a very important way to
communicate necessary safety information to users and operators. A complete and legible copy of this manual
must be kept in the provided weather-resistant storage compartment on the aerial platform at all times.

Operator

The operator must read and completely understand both this operating manual and the safety panel label located on
the platform and all other warnings in this manual and on the aerial platform. Compare the labels on the aerial platform
with the labels found within this manual. If any labels are damaged or missing, replace them immediately.

Service Policy and Warranty

SKYJACK warrants each new SJRT Series aerial platform to be free of defective parts and workmanship for the first
24 months. Any defective part will be replaced or repaired by your local SKYJACK dealer at no charge for parts or
labor. Contact the SKYJACK Service Department for warranty statement extensions or exclusions.

111

1

Optional Accessories

The SKYJACK aerial platform is designed to accept a variety of optional accessories. These are listed under
“Standard and Optional Features” in Table 4.1. Operating instructions for these options (if equipped) are located
in Section 3 of this manual.

For non-standard components or systems, contact the SKYJACK Service Department at

( : 44-1691-676-235

7 : 44-1691-676-239

Include the model and serial number for each applicable aerial platform.

Scope of this Manual

a. This MEWP meets requirements of the Guideline published by the National Regulators’ Committee on High

Risk Plant dated 27 May 2010.

b. Operators are required to conform to national, state or territorial/provincial and local health and safety regulations

applicable to the operation of this aerial platform.

Mid Size & Full Size RTs
Engine Powered December 2007 Page 5

TM

Safety Rules Section 1 - About Your Aerial Platform

WARNING

Failure to comply with your required responsibilities in the use and operation of the aerial platform

could result in death or serious injury!

Operator Safety Reminders

A study conducted by St. Paul Travelers showed that most accidents are caused by the failure of the operator to
follow simple and fundamental safety rules and precautions.

You, as a careful operator, are the best insurance against an accident. Therefore, proper usage of this aerial
platform is mandatory. The following pages of this manual should be read and understood completely before
operating the aerial platform.

Common sense dictates the use of protective clothing when working on or near machinery. Use appropriate safety
devices to protect your eyes, ears, hands, feet and body.

Any modifications from the original design are strictly forbidden without written permission from SKYJACK.

Electrocution Hazard

This aerial platform is not electrically insulated. Maintain a Minimum Safe Approach Distance (MSAD) from

energized power lines and parts as listed below. The operator must allow for the platform to sway, rock or sag.

This aerial platform does not provide protection from contact with or proximity to an electrically charged
conductor.

DO NOT USE THE AERIAL PLATFORM AS A GROUND FOR WELDING.

DO NOT OPERATE THE AERIAL PLATFORM DURING LIGHTNING OR STORMS.

DANGER

Avoid Power Lines

Minimum Safe Approach Distance

AS 2550.10-2006 Requirements

Voltage Range (Phase to Phase)

Up to and including 133KV 6.4 3

Greater than 133KV 10 8

FAILURE TO AVOID THIS HAZARD WILL RESULT IN DEATH OR SERIOUS INJURY!

TM

Page 6 December 2007

Minimum Safe Approach Distance (Meters)

Without Spotter With Spotter

Mid Size & Full Size RTs

Engine Powered

1013AA

Section 1 - About Your Aerial Platform Safety Rules

Safety Precautions

Know and understand the safety precautions before going on to next section.

WARNING

Failure to heed the following safety
precautions could result in tip over,
falling, crushing, or other hazards leading

to death or serious injury.

• KNOW all national, state/provincial and local

rules which apply to your aerial platform and
jobsite.

• TURN main power disconnect switch “

when leaving the aerial platform unattended.
Remove the key to prevent unauthorized use of
the aerial platform.

• WEAR all the protective clothing and personal

safety devices issued to you or called for by job
conditions.

• DO NOT wear loose clothing,

dangling neckties, scarves,
rings, wristwatches or other
jewelry while operating this
aerial platform.



• AVOID entanglement with

ropes, cords or hoses.

” off





• DO NOT increase the lateral

surface area of the platform.
Increasing the area exposed
to the wind will decrease aerial
platform stability.

• DO NOT drive or elevate the

aerial platform if it is not on a
firm level surface. Do not drive
elevated near depressions
or holes of any type, loading
docks, debris, drop-offs and
surfaces that may affect the
stability of the aerial platform.

• If operation in areas

with holes or drop-offs
is absolutely necessary,

elevated driving shall not be
allowed. Position the aerial
platform horizontally only with
the platform fully lowered. After
ensuring that all 4 wheels or
outriggers (if equipped) have
contact with level firm surface,
the aerial platform can be
elevated. After elevation, the
drive function must not be
activated.

• Elevated driving must

• AVOID falling. Stay within the

boundaries of the guardrails.

only be done on a firm level
surface.

• DO NOT ascend or descend

a grade when elevated. When

• DO NOT raise the aerial

platform in windy or gusty
conditions.

fully lowered, ascending or
descending, only grades up
to rated maximum listed in

Table 4.3 are permissible.

Mid Size & Full Size RTs
Engine Powered December 2007 Page 7

TM

Safety Rules Section 1 - About Your Aerial Platform

Safety Precautions (Continued)

Know and understand the safety precautions before going on to next section.

• DO NOT operate on surfaces not capable

of holding the weight of the aerial platform
including the rated load, e.g., covers, drains, and
trenches.

• DO NOT operate an aerial

platform that has ladders,
scaffolding or other devices
mounted on it to increase its size
or work height. It is prohibited.

• DO NOT exert side forces on

aerial platform while elevated.

• DO NOT use the aerial platform

as a crane. It is prohibited.

• DO NOT raise the platform

while the aerial platform is on a
truck, forklift or other device or
vehicle.

• BE AWARE of crushing

hazards. Keep all body parts
inside platform guardrail.

• DO NOT lower the platform

unless the area below is
clear of personnel and
obstructions.

• ENSURE that there are no personnel or

obstructions in the path of travel, including blind
spots.

• DO NOT sit, stand or climb on

the guardrails. It is prohibited.

• BE AWARE of blind spots when operating the

• DO NOT climb on scissor arm

• STUNT driving and horseplay are prohibited.

assembly. It is prohibited.

• ENSURE ALL tires are in good condition and lug

• DO NOT alter or disable limit switches or other

• BE AWARE of overhead

obstructions or other possible

• DO NOT use the aerial platform without

hazards around the aerial
platform when driving or lifting.

TM

Page 8 December 2007

aerial platform.

nuts are properly tightened.

safety devices.

guardrails, locking pins and the entry gate/chain/
bar in place.

Mid Size & Full Size RTs

Engine Powered

Section 1 - About Your Aerial Platform Safety Rules

Safety Precautions (Continued)

Know and understand the safety precautions before going on to next section.

• DO NOT exceed the rated capacity of the

aerial platform. Do make sure the load is evenly
distributed on the platform.

• DO NOT attempt to free a snagged platform with

lower controls until personnel are removed from
the platform.

• DO NOT position the aerial platform against

another object to steady the platform.

• DO NOT place materials on the guardrails

or materials that exceed the confines of the
guardrails unless approved by Skyjack.

WARNING

Entering and exiting the aerial platform
should only be done using the three
points of contact.

• Useonlyequippedaccessopenings.

• Enter and exit only when the aerial

platform is in the fully retracted
position.

WARNING

An operator should not use any aerial
platform that:

• does not appear to be working properly.

• has been damaged or appears to have worn

or missing parts.

• has alterations or modifications not approved
by the manufacturer.

• has safety devices which have been altered
or disabled.

• has been tagged or locked out for non-use or
repair.

Failure to avoid these hazards could

result in death or serious injury.

Jobsite Inspection

• Do not use in hazardous locations.

• Perform a thorough jobsite inspection prior to

operating the aerial platform, to identify potential
hazards in your work area.

• Be aware of moving equipment in the area. Take
appropriate actions to avoid collision.

• Do use three points of contact to enter and exit
the platform. Enter and exit the platform from
the ground only. Face the aerial platform when
entering or exiting the platform.

• Three points of contact means that two hands and
one foot or one hand and two feet are in contact
with the aerial platform or the ground at all times
during entering and exiting.

Mid Size & Full Size RTs
Engine Powered December 2007 Page 9

TM

Section 2- Familiarization SJRT Series

2.1 Familiarization of SJRT Mid Size and Full Size Series

WARNING

Aerial Platform Familiarization should be given only to individuals who are QUALIFIED And

TRAINED to operate an aerial platform.

Do not operate this aerial platform without proper authorization and training. Failure to avoid

this hazard could result in death or serious injury.

It is the responsibility of the operator to read, completely understand and follow all

instructions and warnings contained in this operating manual and on the aerial platform.

Holding Valve
Platform Control
Console

Power Extension
Control Console

Outrigger
Control Console

Manual Override

Knob

Retraction System

Base
Control
Console

Emergency

Powered

Extension

(9250 ONLY)

Emergency

Lowering

Valve (71XX,

88XX, 9250)

1

2

2

2

1

1

Emergency

Lowering

Pushbutton

(9250 ONLY)

Engine Control
Console

Brake Auto Reset

Main Power

Disconnect

Mid Size & Full Size RTs
Engine Powered

Valve Plunger

Brake Hand

Pump

Manual
Box

FAMILIARIZATIONFAMILIARIZATION

Page 11

Control Functions Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

2.2 Component Identification

The following descriptions are for identification,
explanation and locating purposes only.

2.2-4 Load Sensing System

This system is a safety device that prevents any normal
movement of the aerial platform from a stationary
working condition after the rated load is reached and

2.2-1 Main Power Disconnect Switch

This switch is located at the side of the hydraulic/

exceeded. Refer to Table 4.4 for maximum platform
capacities.

electrical compartment.

• When 90% of the rated load is reached:

The red power indicator light on the platform
control console flashes.

1

Figure 2-1. Main Power Disconnect Switch

1. Main Power Disconnect Switch - This switch,
when in “ ” off position, disconnects power

to all circuits. Switch must be in “ ” on position
to operate any circuit. Turn switch off when
transporting aerial platform.

2.2-2 Motion Alarm

The alarm produces an audible sound when any control
function is selected. On aerial platforms with certain
options, a flashing amber light will accompany this
alarm.

2.2-3 Tilt Alarm

The aerial platform is equipped with a device which
senses when the aerial platform is out of level in any
direction. When activated, it disables drive and lift
functions of the aerial platform and an alarm produces
an audible sound accompanied by the amber light. If
the alarm sounds, lower the platform completely, then
reposition aerial platform so that it is level before raising
the platform.

NOTE

If the tilt alarm sounds and the platform does
not, or only partially raises, immediately
lower the platform completely and ensure
that the aerial platform is on a firm level

surface.

• When the rated load is reached:

An audible alarm sounds for approximately
2 seconds, 5 times per minute.

• When the rated load is exceeded:

The flashing light and audible alarm continue and
all electrically controlled aerial platform movement
functions stop. To resume normal operation,
remove the overload from the platform.

• If the aerial platform during the operation comes
in contact with an overhead obstruction:

The platform could become overloaded and all
functions would stop. Release of the platform
from this situation can only be effected by use
of the emergency lowering system. Refer to

Section 2.6.

NOTE

After reaching full extension and upon
lowering, the aerial platform could stop
and take an overload reading. Return the
proportional controller to the neutral center
position, and release the enable trigger
switch. If the aerial platform is overloaded,
the flashing light and audible alarm
continue and all electrically controlled
aerial platform movement functions stop.
To resume normal operation, remove the

overload from the platform.

FAMILIARIZATIONFAMILIARIZATION

Page 12 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Control Functions

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

2.2-5 Base Control Console

This control console is located at the rear of the
hydraulic/electrical compartment. It contains the
following controls:

2.2-6 Brake System

The brake system is located on the main manifold in
the hydraulic/electrical compartment. The brake must
be manually disengaged before pushing, winching or
towing. Refer to Section 2.5 for procedure on how to

21

release the brake manually. The system contains the
following controls:

3

1

2

Figure 2-2. Base Control Console

1. Lower/Neutral/Raise Switch - This switch controls

“ ” raising or “ ” lowering of platform.

2. Enable Switch - When selected and held, this

“

” switch allows the lift and auxiliary start

functions to operate.

3. Emergency Stop Button - This button “ ”,
when depressed, disconnects power to the control
circuit.

Disc Brake

Figure 2-3. Brake System

1. Brake Hand Pump

2. Brake Auto Reset Valve Plunger

2.2-7 Emergency Powered Extension Platform
Retraction System (Models 92xx)

This system is located in the hydraulic/electrical
compartment. In the event of an emergency or an engine
malfunction, this switch (item 1) can retract the powered
extension platform from the base. Refer to Section 3.8-9
for emergency retraction procedure.

1

Figure 2-4. Emergency Powered Extension Platform

Retraction System

Mid Size & Full Size RTs
Engine Powered

FAMILIARIZATIONFAMILIARIZATION

Page 13

Control Functions Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

2.2-8 Emergency Lowering System

This emergency lowering system allows platform
lowering in the event of an emergency or an electrical

2.2-9 Engine Control Console

This control console is attached to the engine tray. It

contains the following controls:
system failure. Refer to Section 2.6 for the emergency
lowering procedures. The system contains the following
controls:

Models 71xx & 88xx

2

1

1

3

2

3

Figure 2-5. Emergency Lowering System

1. Holding Valve Manual Override Knob - Located

on the holding valve at the bottom of each lift
cylinder.

2. Emergency Lowering Valve - Located at the rear

of the hydraulic/electrical compartment.

3. Emergency Lowering Access Rod - Located

either at the base, on top of scissor guards, or on
top of fuel cabinet.

Model 9250

This emergency lowering system is located on the
hydraulic tank and is accessed through a hole in the
hydraulic/electrical compartment door.

Figure 2-7. Engine Control Console - Diesel Engine

1. Engine Off/On/Start Switch - This is a three­position switch. When in “ ” on position, it

energizes engine circuit. When in “

” start
position, it starts the engine (switch will return
to on position when released). When in “ ” off
position, it turns engine off.

2. Glow Plug Switch - This “ ” toggle switch
energizes the glow plugs to aid in starting a cold
diesel engine. Glow plugs are only active while
switch is activated.

3. Glow Plug Indicator Light - This red lamp
illuminates until the glow plugs have completed
the timed heating cycle. When the lamp goes out,
the engine is ready to be started.

1

Figure 2-6. Emergency Lowering System

1. Emergency Lowering Pushbutton

2. Emergency Lowering Valve

FAMILIARIZATIONFAMILIARIZATION

Page 14 Mid Size & Full Size RTs

2

Engine Powered

Section 2 - Familiarization Control Functions

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

2.2-10 Platform Control Console

This removable control console is mounted at the right
front of the platform. It contains the following controls:

5. Lift Enable Pushbutton - When depressed and

held, this “

” pushbutton allows the lift

functions to operate.

13

1

12

11

10

2

3

4

5

9

8

7

6

Figure 2-8. Platform Control Console

1. Torque Switch - This switch, when in

“

” high torque position, cuts out high range
and 3rd speed to provide maximum torque when
climbing grades and on rough terrain. When in

“

” low torque position, all three speeds are

available.

2. Horn Pushbutton - This “ ” pushbutton sounds
an automotive-type horn.

Emergency Stop Button - This button “ ”,

6.

when depressed, disconnects power to control
circuit and shuts engine off. The red colored light
indicates upper control availability and overload
status. When the light is continuously illuminated,
upper controls are available. When the light is
flashing, it signals an overload function. Refer to

Section 2.2-4.

Off/Lift/Drive Key Switch - Selecting “ ” off

7.

position disconnects power from both lift and drive

circuits. Selecting “

” lift position energizes the

lift circuit. Selecting “ ” drive position energizes
the drive circuit.

8. Raise/Off/Lower Switch - This switch controls

” raising or “ ” lowering of the platform.

“

9. Operation Light - The red colored light indicates
upper control availability and overload status.
When the light is continuously illuminated,
upper controls are available. When the light is
flashing, it signals an overload function. Refer to

Section 2.2-4.

3. Glow Plug Pushbutton (Diesel) - This pushbutton

energizes the “

” glow plugs to aid in starting a

cold diesel engine.

4. Engine Start Pushbutton - This “ ” pushbutton
energizes the engine starter motor.

NOTE

The engine start pushbutton is interlocked
with the oil pressure switch. If engine stalls
or does not start immediately, this button
will not work for a few seconds while oil

pressure bleeds off.

Mid Size & Full Size RTs
Engine Powered

10. Low/High Speed Range Switch - This switch

selects “

” high speed range (low torque).

“

” low speed range (high torque) or

11. Low/High Throttle Switch - This rotary switch

allows selection between “

” low and “ ”

high engine throttle speeds.

12. Drive/Steer Controller - This one-hand lever
controls drive speed and steer motion. Internal
springs return it to neutral when controller is
released. The rocker switch on top of controller
handle controls steering function.

13. Drive/Steer Enable Trigger Switch - This

momentary “ ” switch energizes the controller.
It must be held depressed continuously while
engaging either drive or steer functions.

Page 15

FAMILIARIZATIONFAMILIARIZATION

Visual & Maintenance Inspection Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Model 71xx Model 88xx

Platform Control
Console

Platform
Assembly

Scissor
Assembly

Limit Switch

Outrigger

Ladder

FAMILIARIZATIONFAMILIARIZATION

Electrical/Hydraulic
Compartment

Base

Ladder

2.3 Visual & Daily Maintenance
Inspections

Begin the visual and daily maintenance inspections
by checking each item in sequence for the conditions
listed in this section.

WARNING

To avoid injury, do not operate an aerial
platform until all malfunctions have been

corrected.

WARNING

To avoid possible injury, ensure aerial
platform power is off during your visual

and daily maintenance inspections.

NOTE

While doing visual and daily inspections
in different areas, be aware to also inspect
limit switches, electrical and hydraulic

components.

2.3-1 Labels

Refer to Section 5- Labels in this manual and determine
that all labels are in place and are legible.

2.3-2 Electrical

Maintaining the electrical components is essential
to good performance and service life of the aerial
platform.

Electrical/Hydraulic
Compartment

Limit Switch

Base

Inspect the following areas for chafed, corroded and
loose wires:

• base to platform cables and wiring harness

• engine compartment electrical panel

• engine wiring harness

• hydraulic/electrical wiring harnesses

2.3-3 Limit Switches

Ensure limit switches are properly secured with no signs
of visible damage and movement is not obstructed.

2.3-4 Hydraulic

Maintaining the hydraulic components is essential
to good performance and service life of the aerial
platform.

Perform a visual inspection around the following
areas:

• hydraulic tank filter, fittings, hoses, emergency
power unit (if equipped) and base surfaces

• engine compartment fittings, hoses, main
pump, and filter

• all hydraulic cylinders

• all hydraulic manifolds

• the underside of the base

• ground area under the aerial platform

• outriggers

2.3-5 Emergency Lowering Access Rod
(All models except 9250)

Ensure rod is properly secured and there is no visible
damage.

Page 16 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Visual & Maintenance Inspection

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown

Emergency Lowering

Electrical Panel

Access Rod

Main Manifold

Main Power

Disconnect Switch

Load/Tilt

Sensor

Base Control

Motion Control Manifold

Cushion Cylinder

Brake Manifold

Switches

2.3-6 Hydraulic/Electrical Compartment

- Ensure all compartment latches are secure

and in proper working order.

• Main Power Disconnect Switch

- Turn main power disconnect switch to

“ ” off position.

- Ensure all cables are secure and switch

is in proper working condition.

• Base Control Switches

- Ensure there are no signs of visible

damage and all switches are in their
neutral positions.

• Battery

Proper battery condition is essential to

good performance and operational safety.
Improper fluid levels or damaged cables and
connections can result in component damage
and hazardous conditions.

WARNING

Explosion hazard. Keep flames
and sparks away. Do not smoke

near batteries.

WARNING

Battery acid is extremely corrosive ­Wear proper eye and facial protection as
well as appropriate protective clothing.
If contact occurs, immediately flush with
cold water and seek medical attention.

1. Check battery case for damage.

2. Clean battery terminals and cable ends
thoroughly with a terminal cleaning tool or
wire brush.

3. Ensure all battery connections are tight.

4. If applicable, check battery fluid level. If plates
are not covered by at least 13 mm of solution,
add distilled or demineralized water.

5. Replace battery if damaged or incapable of
holding a lasting charge.

FAMILIARIZATIONFAMILIARIZATION

WARNING

Use original or manufacturer-approved
parts and components for the aerial

platform.

Mid Size & Full Size RTs
Engine Powered

Page 17

Visual & Maintenance Inspection Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown

Emergency Lowering

Electrical Panel

Main Power

Disconnect Switch

Load/Tilt

Sensor

Motion Control Manifold

Cushion Cylinder

Brake Manifold

Access Rod

Main Manifold

Base Control
Switches

• Manifolds

- Ensure all fittings and hoses are properly

tightened and there is no evidence of
hydraulic leakage.

- Ensure there are no loose wires or

missing fasteners.

• Electrical Panel

- Ensure panel is properly secured and

there is no visible damage.

- Ensure there are no loose wires or

missing fasteners.

• Load/Tilt Sensor

- Ensure load/tilt sensor is properly secured

and there is no visible damage.

• Hydraulic Tank (Models 92xx)

- Ensure hydraulic filler cap is secure.

- Ensure tank shows no visible damage

and no evidence of hydraulic leakage.

• Hydraulic Oil

- Ensure platform is fully lowered, and

outriggers retracted, and then visually
inspect the sight gauge located on the
side of the hydraulic oil tank. Check oil
level against label that indicates minimum
and maximum oil levels (Models 92xx).

- The hydraulic oil level should be at or

slightly above the top mark of the sight
glass (Models 71xx & 88xx).

FAMILIARIZATIONFAMILIARIZATION

Page 18 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Visual & Maintenance Inspection

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown













Hydraulic TankFuel Tank

2.3-7 Hydraulic/Fuel Compartment

- Ensure all compartment latches are

secure and in proper working order.

• Hydraulic Tank (Models 71xx & 88xx)

- Ensure hydraulic filler cap is secure.

- Ensure tank shows no visible damage

and no evidence of hydraulic leakage.

• Hydraulic Oil (Models 71xx & 88xx)

- Ensure platform is fully lowered, and then

visually inspect the sight gauge located
on the side of the hydraulic oil tank.

- The hydraulic oil level should be at or

slightly above the top mark of the sight
glass.

• Fuel Tank

IMPORTANT

Before using your aerial platform ensure

there is enough fuel for expected use.

• Fuel Leaks

- Ensure that there no fuel leaks.

DANGER

Engine fuels are combustible. Inspect
the aerial platform in an open, well­ventilated area away from heaters,
sparks and flames. Always have an
approved fire extinguisher within easy

reach.

- Ensure fuel tank, hoses and fittings show

no visible damage and no evidence of
fuel leakage.

FAMILIARIZATIONFAMILIARIZATION

- Ensure fuel filler cap is secure.

- Ensure tank shows no visible damage

and no evidence of fuel leakage.

Mid Size & Full Size RTs
Engine Powered

Page 19

Visual & Maintenance Inspection Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown

Muffler and Exhaust

Engine Air Filter

Hydraulic Pump

Engine Tray

Engine

Battery

Radiator

Engine Control
Console

2.3-8 Engine Compartment

WARNING

Beware of hot engine components.

1. Pull on the two latches to pull out engine
compartment.

• Engine Control Console

- Ensure muffler and exhaust system are

properly secured, with no evidence of
damage.

• Radiator

- Ensure radiator is secure.

- Ensure there are no loose or missing

parts and there is no visible damage.

- Check coolant level and add as

needed.

• Muffler and Exhaust

- Ensure muffler and exhaust system are

properly secured, with no evidence of
damage.

• Engine Tray

- Ensure there are no loose or missing

parts and no visible damage to the engine
tray. Ensure that both tray-securing bolts
are in place.

• Hydraulic Pump

- Ensure there are no loose or missing

parts and there is no visible damage.

- Ensure all bolts are properly tightened.

- Ensure all fittings and hoses are properly

tightened and there is no evidence of
hydraulic leakage.

FAMILIARIZATIONFAMILIARIZATION

Page 20 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Visual & Maintenance Inspection

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown

Muffler and Exhaust

Engine

Radiator

Engine Control
Console

Engine Air Filter

Hydraulic Pump

Engine Tray

Battery

• Engine Oil Level

- Maintaining the engine components

is essential to good performance and
service life of the aerial platform.

Check oil level on dipstick

- Oil level should be between the “L” and

“H” marks. Add oil as needed.

• Engine Air Filter

- Ensure there are no loose or missing

parts and there is no visible damage.

• Fuel Leaks

- Ensure there are no fuel leaks.

DANGER

Engine fuels are combustible. Inspect
the aerial platform in an open, well­ventilated area away from heaters,
sparks and flames. Always have an
approved fire extinguisher within easy

reach.

- Ensure fuel pump, fuel filter, hoses and

fittings show no visible damage and no
evidence of fuel leakage.

2. Push in engine compartment until the two
latches lock to base.

FAMILIARIZATIONFAMILIARIZATION

Mid Size & Full Size RTs
Engine Powered

Page 21

Visual & Maintenance Inspection Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Platform
Railing

Platform Control

Console

2.3-9 Platform Assembly

WARNING

Ensure that you maintain three points of

contact to mount/dismount platform.

1. Use the ladder of aerial platform to access
platform.

2. Close the gate.

- Ensure there are no loose or missing

parts and there is no visible damage.

- Ensure all fasteners are securely in

place.

- Ensure all railings are properly positioned

and secured.

- Ensure gate is in good working order.

• Lanyard Attachment Anchors

- Ensure attachment rings are secure and

have no visible damage.

Platform
Assembly

• Platform Control Console

- Ensure all switches and controller are

returned to neutral and are properly
secured.

- Ensure there are no loose or missing

parts and there is no visible damage.

• Powered Extension Control Console
(If Equipped)

- Ensure all switches are returned to

neutral and are properly secured.

- Ensure there are no loose or missing

parts and there is no visible damage.

WARNING

Ensure that you maintain three points of

contact to mount/dismount platform.

3. Use the ladder to dismount from platform.

• AC Outlet on Platform

- Ensure outlet has no visible damage and

free from dirt or obstructions.

FAMILIARIZATIONFAMILIARIZATION

Page 22 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Visual & Maintenance Inspection

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Slider

Limit Switch

2.3-10 Lifting Mechanism

• Scissor Guards

- Ensure there are no loose or missing

parts and there is no visible damage.

• Sliders

- Ensure sliders are secure and there is no

visible damage.

Scissor Assembly

Scissor Bumper

Maintenance
Support

Lift Cylinder

• Scissor Bumpers

- Ensure bumpers are secure and shows

no sign of visible damage.

• Lift Cylinder(s)

- Ensure each lift cylinder is properly

secured, there are no loose or missing
parts and there is no evidence of
damage.

- Ensure sliders’ path of travel are free from

dirt and obstructions.

1. Raise the platform (refer to Section 3.8-2) until
there is adequate clearance to swing down the
maintenance support (refer to Section 3.12).

• Maintenance Support

- Ensure maintenance support is properly

secured and shows no visible damage.

• Scissor Assembly

- Ensure scissor assembly shows no visible

damage and no signs of deformation in
weldments.

- Ensure all pins are properly secured.

- Ensure cables and wires are properly

routed and shows no signs of wear and/
or physical damage.

Mid Size & Full Size RTs
Engine Powered

- Ensure all fittings and hoses are properly

tightened and there is no evidence of
hydraulic leakage.

2. Raise the platform until there is adequate
clearance to swing up the maintenance
support into storage bracket. Refer to

Section 3.12.

3. Fully lower the platform.

FAMILIARIZATIONFAMILIARIZATION

Page 23

Visual & Maintenance Inspection Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown - Bottom View

Ladder

Manual Storage

Box

Wheel/Tire

Assembly

Steer Cylinder

Assembly

2.3-11 Base

• Base Weldment

- Ensure there are no visible cracks in

welds or structure and there are no signs
of deformation.

• Wheel/Tire Assembly

The aerial platform is equipped with foam-

filled tires. Tire and/or wheel failure could
result in an aerial platform tipover. Component
damage may also result if problems are not
discovered and repaired in a timely fashion.

- Check all tire treads and sidewalls for cuts,

cracks, punctures and unusual wear.

- Check each wheel for damage and cracked

welds.

- Check each lug nut for proper torque to

ensure none are loose.

Base
Weldment

Drive Axle

Tie Rod

• Drive Axle

- Ensure drive axle is properly secured,

there are no loose or missing parts, all
fittings and hoses are properly tightened
and there is no evidence of hydraulic
leakage.

• Steer Cylinder Assembly

- Ensure steer cylinder assembly is properly

secured, there are no loose or missing
parts, all fittings and hoses are properly
tightened and there is no evidence of
hydraulic leakage.

• Tie Rod

- Ensure there are no loose or missing

parts, tie rod end studs are locked and
there is no visible damage.

Refer to Table 4.6 for wheel/tire specifications.

FAMILIARIZATIONFAMILIARIZATION

Page 24 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Visual & Maintenance Inspection

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Typical Model 71xx shown - Bottom View

Ladder

Manual Storage

Wheel/Tire

Assembly

Steer Cylinder

Assembly

• Ladder

- Ensure there are no loose or missing

parts and there is no visible damage.

• Outriggers (If Equipped)

- Ensure there are no loose or missing

parts and there is no visible damage.

Box

Base
Weldment

Drive Axle

Tie Rod

2.3-12 Manuals

Ensure a copy of operating manual is

enclosed in manual storage box.

- Check to be sure manual storage box is

present and in good condition.

- Ensure manuals are legible and in good

condition.

Mid Size & Full Size RTs
Engine Powered

- Always return manuals to the manual

storage box after use.

FAMILIARIZATIONFAMILIARIZATION

Page 25

Function Tests Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Drive/Steer Enable

Trigger Switch

Torque Switch

Low/High Speed Range

Switch

Horn

Pushbutton

Glow Plug

Pushbutton

Engine Start

Pushbutton

Lift Enable

Pushbutton

2.4 Function Tests

Function tests are designed to discover any malfunctions
before aerial platform is put into service. The operator
must understand and follow step-by-step instructions
to test all aerial platform functions.

Rocker Switch

Drive/Steer
Controller

Low/High Throttle
Switch

Operation Light

Raise/Off/Lower
Switch

Off/Lift/Drive Key
Switch

Emergency Stop
Button

WARNING

Ensure that you maintain three points of
contact when using the ladder to mount/

dismount platform.

WARNING

Never use a malfunctioning aerial
platform. If malfunctions are discovered,
aerial platform must be tagged and
placed out of service. Repairs to aerial
platform may only be made by a qualified

service technician.

After repairs are completed, operator must perform a
pre-operation inspection and a series of function tests
again before putting aerial platform into service.

Prior to performing function tests, be sure to read and
understand Section 3.8 - Start Operation.

2.4-1 Platform Control Console

1. Turn main power disconnect switch to “ ” on
position.

2. On engine control console, select off/on/start
switch to “ ” on position.

4. Use the ladder of aerial platform to access
platform.

5. Close the gate.

6. On platform control console, insert key into

off/lift/drive key switch and select “ ” lift
position.

7. Pull out “ ” emergency stop button. A
beeping sound should be audible and light
should come on.

WARNING

If beeping sound is not audible and light
does not come on, aerial platform must

be tagged and placed out of service.

FAMILIARIZATIONFAMILIARIZATION

3. On base control console, pull out “ ”
emergency stop button.

Page 26 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Function Tests

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Drive/Steer Enable

Trigger Switch

Torque Switch

Low/High Speed Range

Switch

Horn

Pushbutton

Glow Plug

Pushbutton

Engine Start

Pushbutton

Lift Enable

Pushbutton

8. Select low/high throttle switch to “ ” low
throttle position.

CAUTION

Do not start the engine in the high

throttle position.

Rocker Switch

Drive/Steer
Controller

Low/High Throttle
Switch

Operation Light

Raise/Off/Lower
Switch

Off/Lift/Drive Key
Switch

Emergency Stop
Button

3. Select and hold raise/off/lower switch to

“ ” raise position without pressing lift

“ ” enable pushbutton.

Result: Platform should not rise.

• Test Platform Raising/Lowering

9. If diesel engine is cold, depress and hold

“ ” glow plug pushbutton for 15 to 20
seconds.

10. Depress and hold “ ” engine start
pushbutton to start the engine.

• Test Emergency Stop

1. Push in “ ” emergency stop button.
Result: Engine should shut down and

aerial platform functions should not
operate.

• Test Lift Enable

1. Pull out “ ” emergency stop button.

2. Restart the engine.

WARNING

Be aware of overhead obstructions
or other possible hazards around the

aerial platform when lifting.

1. Press and hold lift “ ” enable pushbutton,
then select and hold raise/off/lower switch

to “

” raise position and raise the
platform to an approximate height of 0.5
meter. Release switch to stop.

Result: Platform should rise.

2. Press and hold lift “ ” enable pushbutton,
then select and hold raise/off/lower switch

to “

” lower position and lower the

platform fully. Release switch to stop.

Result: Platform should lower.

FAMILIARIZATIONFAMILIARIZATION

Mid Size & Full Size RTs
Engine Powered

Page 27

Function Tests Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Drive/Steer Enable

Trigger Switch

Torque Switch

Low/High Speed Range

Switch

Horn

Pushbutton

Glow Plug

Pushbutton

Engine Start

• Test Enable Trigger Switch

1. Ensure outriggers are fully retracted. Refer
to Section 3.8-10 for hydraulic outriggers
operation.

2. Ensure path of intended motion is clear.

3. Select off/lift/drive key switch to “ ”
drive position.

4. Without activating “ ” enable trigger
switch, attempt to drive and steer the aerial
platform.

Result: Drive and steer functions should

not operate.

• Test Steering

1. Activate and hold enable trigger switch,
and then press rocker switch on top of

Pushbutton

Lift Enable

Pushbutton

Rocker Switch

Drive/Steer
Controller

Low/High Throttle
Switch

Operation Light

Raise/Off/Lower
Switch

Off/Lift/Drive Key
Switch

Emergency Stop
Button

• Test Driving

1. Ensure path of intended motion is clear.

2. Activate and hold “ ”enable trigger
switch.

3. Slowly move controller fully ” forward,
and then return handle to center
position.

Result: Aerial platform should move in

forward direction, and then come to a
stop.

4. Slowly move controller fully “ ”
backward, and then return handle to center
position.

Result: Aerial platform should move in

reverse direction, and then come to a
stop.

controller to “ ” left and “ ”
right.

Result: Steer wheels should turn left and

right.

• Test Horn

1. Push “ ” horn pushbutton.

FAMILIARIZATIONFAMILIARIZATION

Result: Horn should sound.

Page 28 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Function Tests

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Drive/Steer Enable

Trigger Switch

Torque Switch

Low/High Speed Range

Switch

Horn

Pushbutton

Glow Plug

Pushbutton

Engine Start

Pushbutton

• Test Brake

Brake will engage instantly when
controller handle is released, causing

aerial platform to stop immediately.

Lift Enable

Pushbutton

WARNING

Rocker Switch

Drive/Steer
Controller

Low/High Throttle
Switch

Operation Light

Raise/Off/Lower
Switch

Off/Lift/Drive Key
Switch

Emergency Stop
Button

• Test Speed Limit

WARNING

Be aware of overhead obstructions
or other possible hazards around the

aerial platform when lifting.

1. Ensure path of intended motion is clear.

2. Activate and hold “ ” enable trigger
switch.

3. Drive aerial platform “ ” forward. Test
brake by releasing controller handle.

Result: Aerial platform should come to a

stop.

4. Drive aerial platform “ ” forward. Test

brake again by releasing “

” enable

trigger switch only.

Result: Aerial platform should come to an

instant and abrupt stop.

1. Ensure path of intended motion is clear.

2. Select off/lift/drive key switch to “ ” lift
position.

3. Raise the platform to an approximate
height of 4 meters.

4. Select off/lift/drive key switch to “ ”
drive position and attempt to drive forward
or reverse.

Result: Aerial platform should move slower

than when it was in stowed position.

FAMILIARIZATIONFAMILIARIZATION

Mid Size & Full Size RTs
Engine Powered

Page 29

Function Tests Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Drive/Steer Enable

Trigger Switch

Torque Switch

Low/High Speed Range

Switch

Horn

Pushbutton

Glow Plug

Pushbutton

Engine Start

Pushbutton

Lift Enable

Pushbutton

• Test Lowering Warning

1. Select off/lift/drive key switch to “ ” lift
position.

2. Fully lower the platform.

Result: Alarm should sound the entire way

down.

• Test Powerdeck Enable (If Equipped)

1. Select and hold extend/retract switch to

the “ “ extend position without

selecting “ ” enable switch.

Result: Platform should not extend.

• Test Extension Platform(s)
(If Equipped)

1. Extend each extension platform to about
.5 meter (refer to Section 3.8-8 or Section

3.8-9).

Result: Each extension platform should

extend.

Rocker Switch

Drive/Steer
Controller

Low/High Throttle
Switch

Operation Light

Raise/Off/Lower
Switch

Off/Lift/Drive Key
Switch

Emergency Stop
Button

• Test Emergency Powered
Extension Platform Retraction
Switch (Models 92xx)

1. Extend both powered extension platforms
to about .5 meter.

2. Push in “ ” emergency stop button to
shut down the engine.

WARNING

Ensure that you maintain three points
of contact when using the ladder to

mount/dismount platform.

3. Use the ladder to dismount from
platform.

4. On hydraulic/electric tray, push the
emergency powered extension platform
retraction switch.

Result: Extension platforms should

retract.

2. Retract each extension platform fully.
Result: Each extension platform should

fully retract.

FAMILIARIZATIONFAMILIARIZATION

Page 30 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Function Tests

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Base Control Console

Model 71XX Models 88XX & 9250

Platform Lower/Neutral/
Raise Switch

Enable Switch

Platform Lower/Neutral/

Raise Switch

Emergency Stop

Button

Emergency Lowering

Valve

2.4-2 Base Control Console

1. On engine control console, select

“ ” start position to start the engine.

• Test Emergency Stop

1. Push in “ ” emergency stop button.
Result: Engine should shut down and

aerial platform functions should not
operate.

Enable Switch

Emergency Stop
Button

Auxiliary Start

Switch

• Test Base Lift Enable

1. Start the engine.

2. On base control console, select and hold

lower/neutral/raise switch “ ” to raise
position without selecting and holding
enable switch.

Result: Platform should not rise.

• Test Lower/Neutral/Raise Switch

2. Pull out “ ” emergency stop button and
restart engine.

• Test Auxiliary Start Switch

1. On base control console, select and hold
enable switch and start engine using
auxiliary start switch.

Result: Engine should start.

2. Release enable switch.

Result: Engine should shut off.

3. Attempt to start engine without selecting
and holding enable switch.

Result: Engine should not start.

Mid Size & Full Size RTs
Engine Powered

1. On base control console, select and hold

enable switch and “ ” raise the platform
with lower/neutral/raise switch.

Result: Platform should rise.

2. Select and hold enable switch and fully

“ ” lower the platform with lower/
neutral/raise switch.

Result: Platform should fully lower.

Page 31

FAMILIARIZATIONFAMILIARIZATION

Function Tests Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Base Control Console

Model 71XX Models 88XX & 9250

Platform Lower/Neutral/
Raise Switch

Enable Switch

Platform Lower/Neutral/

Raise Switch

Emergency Stop

Button

Emergency Lowering

Valve

• Test Emergency Lowering
(Models 71xx & 88xx)

Be aware of overhead obstructions
or other possible hazards around the

aerial platform when lifting.

1. Raise the platform to an approximate
height of 4 meters.

2. Locate holding valve manual override knob
at the base of each lift cylinder. Depress
and turn counterclockwise. If necessary,
use emergency lowering access rod that
is located either at the base, on top of
scissor guards, or on top of fuel cabinet.

WARNING

Enable Switch

Emergency Stop
Button

Auxiliary Start

Switch

• Test Emergency Lowering (Model 9250)

WARNING

Be aware of overhead obstructions
or other possible hazards around the

aerial platform when lifting.

1. Raise the platform to an approximate
height of 4 meters.

2. In hydraulic/electrical compartment,
depress and hold emergency lowering
pushbutton to activate the auxiliary
lowering valves. Pull out and hold the
emergency lowering valve to fully lower
platform.

Result: Platform should fully lower.

3. On hydraulic/electrical compartment, pull
out and hold emergency lowering valve to
fully lower the platform.

Result: Platform should fully lower.

4. To restore normal operation, depress and
turn holding valve manual override knobs
clockwise.

FAMILIARIZATIONFAMILIARIZATION

Page 32 Mid Size & Full Size RTs

2.4-3 Test Main Power Disconnect Switch

1. On hydraulic/electrical compartment, turn
main power disconnect switch to “ ” off
position.

Result: Engine should shut down and aerial

platform functions should not operate.

Engine Powered

Section 2 - Familiarization Function Tests

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Left-Rear

Left-Front

Platform Control

Console

Right-Rear

• Test Hydraulic Outriggers (If Equipped)

(For Hydraulic Outrigger Operation, refer to

Section 3.8-10)

7. Drive the aerial platform to maximum
speed.

Result: Aerial platform drives at high

Right-Front

speed.

1. Ensure aerial platform is parked on a firm

WARNING

level surface and free from obstructions.

Be aware of overhead obstructions or

2. Ensure platform is fully lowered.

other possible hazards around the aerial

platform when lifting or driving.

3. Ensure outriggers are fully retracted.

8. Lift platform to 12 feet (measured from the

4. Auto-level (If equipped):

Use auto-level to extend outriggers.
Result: All four outriggers will extend

bottom of the tires to the platform surface)
from stowed position.

Result: Lift function will operate.

until they are supporting weight and bring
machine to within level.

9. Drive aerial platform at raised height (12
feet).

5. Once auto-level is complete, attempt to lift
platform 1 foot and then lower the platform

Result: Aerial platform drives at slow

speed.

to stowed position.

Result: Platform will lift and lower.

10. Attempt to operate outriggers at raised
height (12 feet).

6. With platform at stowed position, fully
retract all outriggers using auto-level.

Result: All four outriggers will retract until

- Attempt to partially extend Left-Front

Outrigger (approximately 4”).

Result: Outrigger will not extend.

FAMILIARIZATIONFAMILIARIZATION

they are in the stowed (up) position.

WARNING

- Attempt to partially extend Right-Front

Outrigger (approximately 4”).

Result: Outrigger will not extend.

Ensure that there are no personnel
or obstructions in the path of travel,

including blind spots.

Mid Size & Full Size RTs
Engine Powered

Page 33

Function Tests Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Left-Rear

Right-Rear

- Attempt to partially extend Right-Rear

Outrigger (approximately 4”).

Result: Outrigger will not extend.

- Attempt to partially extend Left-Rear

Outrigger (approximately 4”).

Result: Outrigger will not extend.

Left-Front

Platform Control

Console

Right-Front

- With Right-Rear Outrigger partially

extended, attempt to lift the platform.

Result: Lift function will not operate.

- With Left-Rear Outrigger partially

extended, attempt to lift the platform.

Result: Lift function will not operate.

11. Lower the platform to stowed position.
Result: Lower function will operate.

12. Raise the platform 1 foot from stowed
position and partially extend Left-Front
Outrigger (approximately 4”).

- Attempt to lift the platform.

Result: Lift function will not operate.

14. Platform at stowed position.

- Extend each outrigger until it raises the

tires up approximately 2”.

- Retract the Left-Front Outrigger until the

weight is resting on the corresponding
tire.

- Extend the Right-Rear Outrigger until it

- Attempt to drive the aerial platform.

Result: Drive function will not
operate.

Result: Lift function will not operate.

makes contact with ground.

- Attempt to lift the platform 1 foot.

- Attempt to lower the platform.

Result: Lower function will operate.

15. Platform at stowed position.

- Extend each outrigger until it raises the

13. Platform at stowed position.

tires up approximately 2”.

- With Left-Front Outrigger partially

Result: Lift function will not operate.

extended, attempt to lift the platform.

- Retract the Right-Front Outrigger

until the weight is resting on the
corresponding tire.

- With Right-Front Outrigger partially

FAMILIARIZATIONFAMILIARIZATION

extended, attempt to lift the platform.

Result: Lift function will not operate.

- Extend the Left-Rear Outrigger until it

makes contact with ground.

Page 34 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Function Tests

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

Left-Rear

Right-Rear

- Attempt to lift the platform 1 foot.

Result: Lift function will not operate.

16. Platform at stowed position.

- Extend each outrigger until it raises the

tires up approximately 2”.

- Retract the Right-Rear Outrigger

until the weight is resting on the
corresponding tire.

- Extend the Left-Front Outrigger until it

makes contact with ground.

- Attempt to lift the platform 1 foot.

Result: Lift function will not operate.

Left-Front

Platform Control

Console

Right-Front

18. Extend all four outriggers until all tires are
off the ground and the aerial platform is
levelled.

- Lift the platform to 12 feet.

Result: Lift function will operate.

- Lower the platform from raised height

(12 feet).

Result: Lower function will operate.

WARNING

If any outrigger interlocks fail to operate
in the expected manner, the aerial
platform should be tagged and removed

from operation immediately.

17. Platform at stowed position.

- Extend each outrigger until it raises the

tires up approximately 2”.

- Retract the Left-Rear Outrigger until the

weight is resting on the corresponding
tire.

- Extend the Right-Front Outrigger until

it makes contact with ground.

- Attempt to lift the platform 1 foot.

Result: Lift function will not operate.

Mid Size & Full Size RTs
Engine Powered

WARNING

Repairs to the aerial platform may
only be made by a qualified service

technician.

FAMILIARIZATIONFAMILIARIZATION

Page 35

Procedures Section 2 - Familiarization

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

2.5 Winching and Towing Procedure

This section provides the operator with procedures
regarding winching, towing and manual brake
release.

Brake must be manually disengaged

before pushing, winching or towing.

WARNING

WARNING

Ensure platform is fully lowered before
winching or towing. Sudden motion could
cause aerial platform to become unstable.

Death or serious injury could result.

WARNING

In emergency situations where aerial
platform functions are not available and
lowering is impeded by an obstacle,
utmost care must be taken to move aerial
platform far enough to clear obstacle. In
such cases, operation must be extremely
smooth with no sudden movements and

must not exceed a speed of 50 mm/sec.

WARNING

When pushing, winching or towing, do

not exceed 3.2 km/h.

WARNING

Do not push, winch or tow aerial platform
onto a slope. Do not stop the towing
vehicle rapidly. Do not pull aerial platform

down an incline.

1. Ensure aerial platform is on level ground. Chock
or block wheels to prevent aerial platform from
rolling.

2. Turn main power disconnect switch to “ ” off
position.

3. Locate the manifold in hydraulic/electrical
compartment.

4. Push in brake auto reset valve plunger (item 2).

5. Repeatedly depress hand pump (item 1) until firm
resistance is felt. The brake is now released.

6. Remove wheel chocks or blocks then push, winch
or tow aerial platform to desired location.

WARNING

Brake must be reengaged immediately

after reaching desired location.

7. Position aerial platform on a firm and level
surface.

8. Chock or block wheels to prevent aerial platform
from rolling.

FAMILIARIZATIONFAMILIARIZATION

2.5-1 To Release the Brake Manually

9. Reengage brake by pulling out brake valve
plunger.

WARNING

Do not manually disengage brake if the

aerial platform is on an incline.

2

1

Figure 2-9. Brake System

1. Brake Hand Pump

2. Brake Auto Reset Valve Plunger

Page 36 Mid Size & Full Size RTs

Engine Powered

Section 2 - Familiarization Procedures

It is the responsibility of the operator to read, completely understand and follow all instructions and warnings

contained in this operating manual and on the aerial platform.

2.6 Emergency Lowering Procedures

This section guides the operator on how to use the

1. Remove any obstructions to a descending
platform.

emergency lowering system. This system allows
platform lowering in the event of an emergency or

WARNING

malfunction.

Ensure platform and extensions including

Models 71xx & 88xx

railing are clear of obstructions before
operating emergency powered extension

WARNING

Keep clear of scissors mechanism when

using emergency lowering valve.

2. Extension platform(s) may need to be retracted or
aerial platform may need to be moved to clear the

platform retraction switch.

obstructions. Refer to Section 2.5 winching and

1. Remove any obstructions to a descending
platform.

towing procedures. Models 92xx are equipped
with emergency powered extension platform
retraction switch (located in the hydraulic/electrical

2. Extension platform(s) may need to be retracted
or aerial platform may need to be moved to clear

compartment) to retract the powered extension

platform from the base.
obstructions. Refer to Section 2.5 for winching and
towing procedures.

1

2

3

Figure 2-10. Emergency Lowering System

3. Locate holding valve override knobs (item 1)
at base of each lift cylinder. Depress and turn
counterclockwise. If necessary, use emergency
lowering access rod (item 3) that is located on
aerial platform base or on top of fuel cabinet.

4. On the hydraulic compartment, pull out and
hold emergency lowering valve (item 2) to lower
platform.

5. To restore normal operation, depress and turn
holding valve override knobs clockwise.

Model 9250

WARNING

Keep clear of scissors mechanism when

using emergency lowering valve.

Figure 2-11. Emergency Powered Extension Platform

Retraction Switch

1

2

Figure 2-12. Emergency Lowering System

3. In hydraulic compartment, depress and hold
emergency lowering pushbutton (item 1) to
activate the auxiliary lowering valves. Pull out
and hold the emergency lowering valve (item 2)
to lower platform. No further actions are required
to restore normal operation.

FAMILIARIZATIONFAMILIARIZATION

Mid Size & Full Size RTs
Engine Powered

Page 37

Section 3 - Operation General

3.0 Operation

This section provides the necessary information needed
to operate the aerial platform. It is important that the user
reads and understands this section before operating
the aerial platform.

3.1 General

In order for this aerial platform to be in good working
condition, it is important that the operator meets the
necessary qualifications and follow the maintenance
and inspection schedule referred to in this section.

3.1-1 Operator Qualifications

• Only trained and authorized personnel shall be
permitted to operate an aerial platform.

• Safe use of this aerial platform requires the
operator to understand the limitations and
warnings, operating procedures and operator’s
responsibility for maintenance. Accordingly, the
operator must understand and be familiar with this
operating manual, its warnings and instructions,
and all warnings and instructions on the aerial
platform.

• The operator must be familiar with employer’s work
rules and related government regulations and be
able to demonstrate the ability to understand and
operate this make and model of aerial platform in
the presence of a qualified person.

3.1-2 Operator’s Responsibility for
Maintenance

• The operator must be sure that the aerial platform
has been properly maintained and inspected
before using it.

• The operator must perform all the daily inspections
and function tests found in Table 4.8, even if
the operator is not directly responsible for the
maintenance of this aerial platform.

3.1-3 Maintenance and Inspection Schedule

• The inspection points covered in Table 4.8 indicate
the areas of the aerial platform to be maintained or
inspected and at what intervals the maintenance
and inspections are to be performed.

• The actual operating environment of the aerial
platform may affect the maintenance schedule.

WARNING

Use original or manufacturer-approved
parts and components for the aerial

platform.

3.1-4 Owner’s Inspections

It is the responsibility of the owner to arrange daily,
quarterly (or 150 hours) and annual inspections of the
aerial platform. Refer to Table 4.8 for recommended
maintenance and inspection areas and intervals. A
record of annual inspection is kept on a label located
on the scissor assembly. Refer to Table 4.2 in this
manual.

1

3

WARNING

Maintenance must be performed by
trained and competent personnel who are

familiar with mechanical procedures.

Death or serious injury could result from
the use of an aerial platform that is not
properly maintained or kept in good

working condition.

Mid Size & Full Size RTs
Engine Powered

Page 39

Major Components Section 3 - Operation

3.2 Major Components

Main Platform

Platform Control ConsoleEntry Gate

Extension
Platform

Lifting

Mechanism

Hydraulic/

Electrical

Compartment

Outrigger

Maintenance
Support

Engine
Compartment

Base

SKYJACK Model 7127 Aerial Platform

Page 40 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Major Assemblies

3.3 Major Assemblies

The aerial platform consists of three major assemblies:
base, lifting mechanism and platform.

3.3-1 Base

The base is a rigid, one-piece weldment which supports
two side compartments.

3.3-2 Lifting Mechanism

The lifting mechanism is constructed of formed steel or
tube sections making up a scissor-type assembly. The
scissor assembly is raised and lowered by single-acting
hydraulic lift cylinders with holding valves. A two-section
pump, driven by an engine, provides hydraulic power
to the lift cylinders.

Models 71xx & 88xx

• One compartment contains the hydraulic and
electrical components, and base control console.
The other compartment contains the fuel and
hydraulic tanks.

• The front axle is steered by a hydraulic cylinder
and is either non-driven (2WD) or drive shaft/gear
box driven (4WD).

• The rear axle is drive shaft/gear box driven and
has a spring-applied hydraulically released disc
brake.

• A roll-out tray at the front of the base supports an
engine coupled with a two-section hydraulic pump
providing power to the hydraulic system.

• An engine control console is also located at the
front of the base.

• The 12V starter battery is located in the hydraulic/
electrical compartment or at the front of the engine
roll-out tray.

Models 92xx

• One compartment contains the hydraulic tank,
hydraulic and electrical components, base control
console, emergency battery and starter battery.

• The other compartment contains the fuel tank.

• The front axle is steered by a hydraulic cylinder

and is drive shaft/gear box driven (4WD).

• The rear axle is drive shaft/gear box driven and
has a spring-applied hydraulically released disc
brake.

• A roll-out tray at the front of the base supports an
engine coupled with a two-section hydraulic pump
providing power to the hydraulic system.

• An engine control console is also located at the
front of the base.

3.3-3 Platform

The platform is constructed of a tubular support frame,
a skid-resistant “diamond plate” platform surface and

1.1 m hinged guardrails with 0.15 m toe boards and
mid-rails. The platform can be entered from either side
through a spring-returned gate for full size RTs and from
the rear through a spring-returned gate for mid size RTs.
Some full size RTs can be equipped with a front or rear
(or both) extension platform(s). The mid size RTs are
equipped with a front extension platform. Models 92xx
are equipped with two powered extension platforms. An
AC outlet is also located on the platform.

3.4 Serial Number Nameplate

The serial number nameplate, located at the rear of the
aerial platform, lists the following:

• Model number

• Serial number

• Aerial platform weight

• Maximum drivable height

• Maximum capacities

• Maximum number of persons permissible on

the platform

• Voltage

• System pressure

• Lift pressure

• Maximum platform height

• Maximum wheel load

• Maximum wind speed

• Maximum manual force

• Maximum incline

• Year of manufacture

Mid Size & Full Size RTs
Engine Powered

Page 41

Component Identification Operation - Section 3

3.5 Component Identification

The following descriptions are for identification,
explanation and locating purposes only.

3.5-1 Manual Storage Box

This weather-resistant box is
mounted inside of the hydraulic/
electrical compartment. It contains
the operating manual, EC declaration
and other important documentation.
The operating manual for this make
and model of aerial platform must be
stored in this box.

3.5-3 Electrical Control Console

This auxiliary control console is located in the hydraulic/
electrical compartment. It contains the following
controls:

1

3.5-2 Maintenance Support

The maintenance support is a safety mechanism
designed to support the scissor assembly. When
properly positioned, it can support the scissor assembly
and empty platform. The maintenance support must
be used when inspection and/or maintenance is to be
performed within the lifting mechanism. To lower the
maintenance support, push lock lever rearward and the
maintenance support will drop. Refer to Section 3.12 for
procedure on how to use and store the maintenance
support.

Figure 3-1. Maintenance Support

WARNING

The maintenance support must be used
when inspection and/or maintenance or
repairs are to be performed within the
lifting mechanism. Failure to use this
safety mechanism could result in death

or serious injury.

2

Figure 3-2. Electrical Control Console

1. Hourmeter - This gauge records accumulated
operating time of engine.

2. Circuit Breakers - In the event of a power overload
or positive circuit grounding, the circuit breaker
pops out. Push breaker back in to reset.

WARNING

Do not reach through the scissor assembly
when the platform is raised without the
maintenance support properly positioned.
Failure to avoid this hazard could result

in death or serious injury.

Page 42 Mid Size & Full Size RTs

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Section 3 - Operation Component Identification

3.5-4 Folding Guardrail System

This system, when folded down, reduces the height
of the retracted aerial platform for transporting and
traveling through doorways only. Refer to Section 3.11
for guardrail folding procedure.

1

DETENT BALL

Clear of side of

pivot bracket

Correct position of locking pin

3.5-5 Lanyard Attachment Anchorage

Use this as an attachment point for safety belt/harness
tethers. Do not attach belts/harnesses to any other point
on the platform. Do not use this point to lift, anchor,
secure or support the platform or any other apparatus
or material.

Figure 3-4. Lanyard Attachment Ring

WARNING

The lanyard attachment anchorage
is used for travel restraint, within the
limits of the platform only. It is not a fall
arresting device! Used as such could

result in death or serious injury.

Figure 3-3. Guardrail Locking Pin

WARNING

The scissor assembly must be fully
lowered before raising or lowering the

guardrails.

WARNING

Before operating this aerial platform
check the guardrail system for loose
or missing locking pins. The guardrail
system must be upright and all pins must
be locked in place. Death or serious injury
could result if the guardrail system is not

upright or properly locked.

Mid Size & Full Size RTs
Engine Powered

Page 43

Component Identification (Special Options) Operation - Section 3

3.6 Component Identification (Special
Options)

This following descriptions are for identification,
explanation and locating purposes only of optional
equipment.

5. Leveling Indicator Light - This light functions
when the auto and manual level functions are in
use and illuminates to display the status of the
auto-leveling outriggers. The indicator light has
the following states:

3.6-1 Generator/Outrigger Control Console
(If Equipped)

The outrigger control console are located next to the
platform control console. These switches control the
outriggers’ extension and retraction.

1

2

3

Figure 3-5. Outrigger Controls with All Options on

Auxiliary Control Console

1. Generator Switch - This switch activates the

generator.

2. Outrigger Extend/Retract Switches - These

switches control the extension and retraction of
each individual outrigger.

5

4

Off: The outriggers are fully retracted.

Flashing Rapidly: The outriggers are extending

or retracting.

Flashing: Not all outrigger legs have firm

ground contact or aerial platform is not level.

On: The outriggers are extended and the

platform is level.

3.6-2 Powered Extension Control Console
(If Equipped)

This control console is mounted on one of the extension
platform guardrails. It contains the following controls:

2

1

3. Auto-Level Switch - When this switch is in the

“ extend position, each outrigger will extend

“
and automatically adjust until the aerial platform

is level. When the switch is in the “
position, the outriggers will retract.

4. Outrigger Enable Switch - This “ ” outrigger
enable switch, when in the extend or retract
position, activates the functions on the auto­level switch and the outrigger extend/retract
switches.

Page 44 Mid Size & Full Size RTs

” retract

Figure 3-6. Powered Extension Control Console

1. Enable Switch - This switch, when activated and
held, allows the extension platform extend/retract
switch functions to operate.

2. Extend/Retract Switch - This switch, when

activated, “ ” extends or “ ” retracts
the powered extension platform. Refer to

Section 3.8-9 on how to extend/retract the powered

extension platform.

Engine Powered

Section 3 - Operation Component Identification (Special Options)

3.6-3 1500W AC Inverter (If Equipped)

The inverter is located on the base of the aerial platform.
It has the following controls:

2

3

1

Figure 3-7. 1500W AC Inverter

NOTE

The inverter operation is automatic. These
controls do not need to be manipulated for

normal operation.

1. On/Off Switch - This diagnostic slide switch
activates or terminates inverter operation. It should
remain in the on position.

2. Status LEDs - These LEDs indicate the operating
or fault status of the inverter.

3. 15 Amp Circuit Breaker - In the event of a power
overload or circuit grounding, the circuit breaker
pops out. Press the breaker back in to reset.

Mid Size & Full Size RTs
Engine Powered

Page 45

Operator’s Responsibility Section 3 - Operation

3.7 Operator’s Responsibility

It is the responsibility of the operator, prior to each work
shift, to perform the following:

1. Visual and Daily Maintenance Inspections

• are designed to discover any damage of
components before the aerial platform is put into
service.

• are done before the operator performs the function
tests.

WARNING

Failure to locate and repair damage, and
discover loose or missing parts may
result in an unsafe operating condition.

2. Function Tests

• are designed to discover any malfunctions before
the aerial platform is put into service.

IMPORTANT

The operator must understand and follow
the step-by-step instructions to test all

aerial platform functions.

Repairs to the aerial platform may only be made by a
qualified service technician. After repairs are completed,
the operator must perform visual and daily maintenance
inspections & function tests again.

Scheduled maintenance inspections shall only
be performed by qualified service technician (see

Table 4.7).

The operator should make a copy of the Operator’s
Checklist (see Table 4.8) and fill out the visual and daily
maintenance inspections and the function tests sections
while performing the items outlined in Section 2.3 and

Section 2.4.

IMPORTANT

If damaged or any unauthorized variation
from factory-delivered condition is
discovered, the aerial platform must be

tagged and removed from service.

Page 46 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Start Operation

3.8 Start Operation

Carefully read and completely understand the Operating
Manual and all warnings and instruction labels (refer to

Section 5- Labels) on the aerial platform.

WARNING

Do not operate this aerial platform without
proper authorization and training. Failure
to avoid this hazard could result in death

or serious injury.

Before operating this aerial platform, perform the
following steps:

1. Visual and daily maintenance inspections (see

Section 2.3)

3.8-1 To Activate Base Control Console

WARNING

Ensure that you maintain three points of
contact when using the ladder to mount/

dismount platform.

1. Use the ladder of aerial platform to access
platform.

2. Close the gate.

3. On platform control console, push in “ ”
emergency stop button.

4. Insert key into off/lift/drive key switch and select

2. Function tests (see Section 2.4)

3. Jobsite inspection
It is the responsibility of the operator to perform

a jobsite inspection and avoid the following
hazardous situations:

• holes or drop-offs

• ditches or soft fills

• floor obstructions, bumps or debris

• overhead obstructions

• electrical cords, hoses and high voltage

conductors

• hazardous locations

• inadequate surface support to withstand all

load forces imposed by the aerial platform

• wind and weather conditions

• the presence of unauthorized personnel

• other possible unsafe conditions

WARNING

An operator should not use any aerial
platform that:

“ ” lift position.

5. Select low/high throttle switch to “ ” low throttle
position.

CAUTION

Do not start the engine in the high throttle

position.

6. Use the ladder to dismount from platform.

7. Turn main power disconnect switch to “ ” on
position.

8. On base control console, pull out “ ” emergency
stop button. A beeping sound should be audible
and light should come on.

WARNING

If beeping sound is not audible and light
does not come on, aerial platform must

be tagged and placed out of service.

• does not appear to be working properly.

• has been damaged or appears to have worn

or missing parts.

9. On engine control console, select off/on/start
switch to “ ” on position.

• has alterations or modifications not approved

by the manufacturer.

• has safety devices which have been altered

or disabled.

10. If diesel engine is cold, select and hold “ ” glow
plug switch for 15 to 20 seconds or until indicator
light goes off.

• has been tagged or locked out for non-use or
repair.

11. Depress and hold “ ” engine start pushbutton
to start the engine.

Failure to avoid these hazards could

result in death or serious injury.

Mid Size & Full Size RTs
Engine Powered

Page 47

Start Operation Section 3 - Operation

3.8-2 To Raise or Lower Platform Using Base
Control Console

WARNING

Be aware of overhead obstructions or
other possible hazards around the aerial

platform when lifting.

3.8-3 To Activate Platform Control Console

1. Turn main power disconnect switch to “ ” on
position.

2. On engine control console, select off/on/start
switch to “ ” on position.

WARNING

Do not lower the platform unless the
area below is clear of personnel and

obstructions.

1. Activate base control console (refer to

Section 3.8-1).

2. Select and hold enable switch.

3. Select and hold lower/neutral/raise switch to either

“ ” raise or “ ” lower position. Release switch
to stop.

3. On base control console, pull out “ ” emergency
stop button.

WARNING

Ensure that you maintain three points of
contact when using the ladder to mount/

dismount platform.

4. Use the ladder of aerial platform to access
platform.

5. Close the gate.

6. On platform control console, insert key into off/lift/

drive key switch and select “ ” lift position.

7. Pull out “ ” emergency stop button. A beeping
sound should be audible and light should come
on.

WARNING

If beeping sound is not audible and light
does not come on, aerial platform must

be tagged and placed out of service.

8. Select low/high throttle switch to “ ” low throttle
position.

CAUTION

Do not start the engine in the high throttle

position.

9. If diesel engine is cold, depress and hold glow
plug pushbutton for 15 to 20 seconds.

10. Depress and hold “ ” engine start pushbutton
to start the engine.

Page 48 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Start Operation

3.8-4 To Raise or Lower Platform Using
Platform Control Console

WARNING

Be aware of overhead obstructions or
other possible hazards around the aerial

platform when lifting.

WARNING

Do not lower the platform unless the
area below is clear of personnel and

obstructions.

1. Activate platform control console (refer to

Section 3.8-3).

3.8-5 To Drive Forward or Backward

WARNING

Be aware of blind spots when operating

the aerial platform.

WARNING

Ensure that there are no personnel
or obstructions in the path of travel,

including blind spots.

1. Activate platform control console (refer to

Section 3.8-3).

2. On platform control console, select off/lift/drive

2. Press and hold lift “ ” enable pushbutton,
then select and hold raise/off/lower switch to

either “

” raise or “ ” lower position. Release

switch to stop.

WARNING

To protect against unintended movement of
the aerial platform, push in the emergency
stop button after you have arrived at your

desired location or elevation.

NOTE

If the tilt alarm sounds and the platform does
not, or only partially raises, immediately
lower the platform completely and ensure
that the aerial platform is on a firm level

surface.

NOTE

Some models may be equipped with an
8-meter lift height restriction. To raise the
platform higher than 8 meters, the aerial
platform’s outriggers must be properly
deployed before lifting from a fully lowered

position. Refer to Section 3.8-10.

key switch to “

” drive position.

3. Activate and hold “ ” enable trigger switch.

4. Push or pull controller handle forward or backward
to desired speed and direction of platform
travel.

5. Return controller to neutral center position to stop.

Release “ ” enable trigger switch.

WARNING

To protect against unintended movement of
the aerial platform, push in the emergency
stop button after you have arrived at your

desired location or elevation.

Mid Size & Full Size RTs
Engine Powered

Page 49

Start Operation Section 3 - Operation

3.8-6 To Steer

3.8-7 To Select Drive Torque

1. Activate platform control console (refer to

Section 3.8-3).

2. Select off/lift/drive key switch to “ ” drive
position.

3. Activate and hold “ ” enable trigger switch.

4. Press “ ” rocker on top of controller handle in
either direction to steer.

NOTE

Steering is not proportional. Driving and
steering can be activated at the same

time.

1. High Torque: Select high torque when ascending
or descending grades, traveling on rough terrain
or when loading or unloading aerial platform. To
activate high torque, select low/high speed range

switch to “

” low speed (high torque) position.

WARNING

Aerial platform must be in fully retracted
position when operated on any grade.
Driving while elevated on any grade may

result in death or serious injury.

2. Low Torque: Select low torque when traveling on
a flat level surface. To activate low torque, select

low/high speed range switch to “

” high speed

(low torque) position.

WARNING

To protect against unintended movement of
the aerial platform, push in the emergency
stop button after you have arrived at your

desired location or elevation.

Page 50 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Start Operation

3.8-8 To Extend or Retract Manual Extension
Platform

3.8-9 To Extend or Retract Powered Extension
Platform (If Equipped)

1

3

2

Figure 3-8. Manual Extension Platform

1. To extend/retract the manual extension platform,
remove the locking pin (item 1) then remove the
push bar locking pins (item 2) and rotate the push
bar towards the main platform. Extend the push
bar until it locks at full extension and push/pull the
extension platform using the push bar.

1. To extend the powered extension platform, ensure

“ ” emergency stop button is pulled out.

2. On platform control console, insert key into off/lift/

drive key switch and select “ ” lift position.

3. On the powered extension control console,

select and hold “ ” enable switch, then push

the extend/retract switch to the “

“ extend

position. Release switch to stop.

4. To retract platform, select and hold “ ” enable

switch, then push extend/retract switch to “

“

retract position. Release switch to stop.

WARNING

To protect against unintended movement of
the aerial platform, push in the emergency
stop button after you have arrived at your

desired location or elevation.

2. Upon full extension or retraction, reinsert the
locking pin on the platform (item 1) to prevent
accidental movement of the manual extension
platform during travel or transport.

3. When the push bar is not in use, pull the plungers
(item 3) on the push bar and retract it, then rotate
it back to its resting position and lock it into place
with the locking pins (item 2).

Mid Size & Full Size RTs
Engine Powered

Page 51

Start Operation Section 3 - Operation

Rev AB - Sept 9/11

3.8-10 Hydraulic Outriggers (If Equipped)

These devices are mounted to the four corners of the
base.

3.8-10a Before Operation

1. Move around aerial platform to check overhead
clearances and ground obstructions.

2. Lower the platform completely. Refer to

Section 3.8-4. Outrigger controls are not functional

when platform is raised.

3. Check that the supporting surface under the
tires and outrigger pads is firm and capable of
supporting aerial platform and rated load. Do not
place outrigger pad on a street drain, manhole
cover or other unsupported surface.

3.8-10b To Extend Outriggers

1. On outrigger control console, select and hold

“ ” enable switch to provide power to outrigger
circuit.

2. Auto Extension: Select auto-level switch to

3. Ensure each outrigger pad is in firm contact over
its entire surface area, with a suitable supporting
surface! Make adjustments if necessary using
manual outrigger controls.

4. Operate all non drive functions as described in
their respective sections.

NOTE

Each outrigger pad must be in firm contact
with the ground for most aerial platform

functions to work.

NOTE

Drive functions are disabled if the outriggers
are in any position other than fully

retracted.

WARNING

If alarm sounds during operation, the
aerial platform is not level or an outrigger
does not have firm ground contact.
Lower the platform immediately! Make
the necessary adjustments to level the

aerial platform.

” extend position until leveling indicator light

“
stops flashing and remains on. Aerial platform
should be level and completely supported by the
outriggers.

Manual Extension: Select corresponding

outrigger extend/retract switch to “

“ extend
position until platform is fully supported by
outriggers and is level. The indicator light flashes
while platform is being leveled and remains on
once platform is level.

The indicator light has the following states:

Off: The outriggers are fully retracted.

Flashing Rapidly: The outriggers are

extending or retracting.

Flashing: Not all outrigger legs have firm

ground contact or aerial platform is not
level.

3.8-10c To Retract Outriggers

1. Ensure platform is fully lowered.

2. On outrigger control console, select and hold

“ ” enable switch to provide power to outrigger
circuit.

3. Auto Retraction: Select auto-level switch to

“

” retract position until outriggers are fully

retracted.

Manual Retraction: Select corresponding pairs

of outrigger extend/retract switch to “

” retract

position until outriggers are fully retracted.

NOTE

Limit switches are used to protect outriggers
from being damaged. If drive functions are
not available, visually check to see that all

outriggers are fully retracted.

On: The outriggers are extended and the

platform is level.

Page 52 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Start Operation

3.8-11 Generator (If Equipped)

3.8-13 Shutdown Procedure

To start the hydraulic generator:

1. On platform control console, select off/lift/drive

key switch to “ ” lift position.

2. Depress and hold “ ” engine start pushbutton
to start the engine.

3. On auxiliary control console, select hydraulic
generator switch to “ ” energized position. Engine

will automatically switch to high throttle and
generator will start.

To stop the hydraulic generator:

1. Select hydraulic generator switch to “ ” off
position. The generator will turn off and throttle
will return to selected speed.

NOTE

Activating any lift or outrigger functions,
changing the key switch setting, activating
the emergency stop or an engine stall will
turn off the generator. The platform may be

lowered during generator operation.

1. Completely lower the platform.

2. On platform control console, push in “ ”
emergency stop button.

3. Select off/lift/drive key switch to “ ” off position
and remove key.

WARNING

Ensure that you maintain three points of
contact when using the ladder to mount/

dismount the platform.

4. Use the ladder to dismount from platform.

5. On base control console, push in “ ” emergency
stop button.

6. On engine control console, select engine off/on/
start switch to “ ” off position.

7. Turn main power disconnect switch to “ ” off
position.

3.8-12 Electrical Inverter (If Equipped)

The inverter is operational with alternating current
available at all times when, and only when, the engine is
running at high throttle. Deselecting the high idle throttle
setting or stopping the engine will turn the inverter off.

To check the status of the inverter:

1. During routine operation, the on/off switch should
remain in the on position. To prevent automatic
inverter operation when high throttle is activated,
slide the on/off switch on the inverter to the off
position.

2. Inverter state is indicated by the LEDs on the face
of the inverter. A glowing green LED indicates
normal operation. If a fault occurs, the status
LEDs will indicate the area responsible. After
the fault condition is corrected, the inverter will
automatically reset itself.

Mid Size & Full Size RTs
Engine Powered

Page 53

Refueling Procedure Section 3 - Operation

3.9 Refueling Procedure

This section provides the operator with the procedure
on how to refuel the engine with regular fuel and install
the propane cylinder.

3.9-1 Regular Fuel (Diesel)

1. Ensure engine and all systems are turned off and
emergency stop buttons are depressed.

IMPORTANT

Before using the aerial platform ensure

there is enough fuel to finish the job.

WARNING

Failure to heed the following safety
precautions could result in death or
serious injury:

• Use extreme caution while refueling
aerial platforms.

• Ensure engine and all systems are
turned off before refueling.

• Refuel aerial platform only in a well
ventilated area away from open
flame and other sources of ignition,
authorized by your employer and
supervisor.

• To minimize possible static electricity
fires, ensure filler nozzle touches rim
of filler opening to aid the dissipation
of static electricity.

• Never try to start an aerial platform if
you smell gas.

WARNING

Do not smoke in an area where aerial

platforms are stored or refueled.

2. Open fuel compartment door and remove fuel
cap.

3. Carefully fill the fuel tank ensuring that no spillage
occurs.

4. Securely replace fuel cap.

5. Ensure there are no leaks in the fuel system.

6. Wipe up any spilled fuel.

7. Dispose of rags in an approved container.

Protection of Environment from Chemical
Dangers

WARNING

Gasoline, diesel fuel, engine oil and
hydraulic fluid are chemicals, which can
contaminate the environment. If they
are spilled during filling and reach the
water, they can cause damage to the
environment, e.g., death of fish. For
such damage, the party responsible is
liable! Therefore, gasoline, diesel fuel,
engine oil or hydraulic fluid must not get
into the sewage system, streams, rivers
or other surface water. For that reason,
immediately remove the dripped off or
spilled gasoline, diesel fuel, engine oil
or hydraulic fluid with appropriate means
and dispose of these means according to

the regulations.

Page 54 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Loading/Unloading

3.10 Loading/Unloading

Know and heed all national, state or territorial/provincial
and local rules which apply to your loading/unloading
of aerial platforms.

Only qualified personnel shall operate machinery
during loading/unloading.

Be sure vehicle capacity and loading equipment
hoists, chains, straps, etc., are sufficient to withstand
maximum aerial platform weight.

The transport vehicle must be parked on a level surface
and must be secured to prevent rolling while aerial
platform is being loaded/unloaded.

3.10-1 Lifting

WARNING

Only qualified rigger shall perform

lifting.

When it is necessary to lift the aerial platform the
following conditions must be met:

• The platform must be fully lowered.

• The main power disconnect switch must be in

“

” off position.

• The hydraulic/electrical and fuel compartments
must be closed and securely latched.

• The extension platform must be retracted and
secured.

• The platform control console must be secured to
the railings or removed.

• The platform must be cleared of all personnel,
tools and materials.

• The lifting/rigging may be attached to all four lifting
points as illustrated in Figure 3-9.

Tie down/lifting points

Center of

gravity

Mid Size & Full Size RTs
Engine Powered

Tie down/lifting pointsTie down/lifting points

Figure 3-9. Tie Downs/Lifting Points

Center of
gravity

Figure 3-10. Center of Gravity

Page 55

Loading/Unloading Section 3 - Operation

NOTE

The mass of the aerial platform is as
per Table 4.3. The center of gravity is
approximately located in the middle of the
aerial platform, front to back and side to
side, as illustrated in Figure 3-10. Vertically,
the center of gravity is approximately just

above the base chassis.

NOTE

Except for Models 92xx, the aerial platform
can be lifted with a forklift from the sides,
but Skyjack does not recommend this use.
Lift with forks in designated pockets as

illustrated in Figure 3-11.

3.10-2 Driving

Before driving the aerial platform:

• Ramp or dock capacity must be sufficient to
withstand maximum aerial platform weight.

• Ramp should be equipped with side guards to
prevent inadvertent fall from the ramp.

• Incline must not exceed aerial platform gradeability
(refer to Table 4.3).

• Aerial platform brake must be checked for proper
operation.

• Aerial platform speed must be on high torque
setting.

WARNING

When transporting, the aerial platform
must be secured to the truck or trailer
deck. Tie downs are available as illustrated

in Figure 3.9.

Forklift pocket
(Models 92xx)

Forklift pocket
(Models 71xx)

Figure 3-11. Forklift Pockets

Page 56 Mid Size & Full Size RTs

Engine Powered

Guardrail Folding Procedure Section 3 - Operation

3.11 Guardrail Folding Procedure

When folded down, the folding guardrail system reduces
the overall height of the retracted aerial platform for
transporting only.

To fold the guardrail system down:

1. Ensure aerial platform is on level ground and all
extension platforms are fully retracted.

WARNING

Any lowered guardrail will create a fall
hazard. To avoid falling, remain away from
the sides of the platform while raising or

lowering the guardrails.

Front
Left Extension
Guardrail

Left-side
Guardrail

Right Extension
Guardrail

Rear

Right-side
Guardrail

1

Figure 3-12. Folding Guardrail System

1. Guardrail Locking Pin with Lanyard - This pin is
used to lock the guardrail in place.

WARNING

Before operating this aerial platform
check the guardrail system for loose
or missing locking pins. The guardrail
system must be upright and all pins must
be locked in place. Death or serious injury
could result if the guardrail system is not

upright or properly locked.

WARNING

The scissor assembly must be fully
lowered before raising or lowering the

guardrails.

2. Turn main power disconnect switch to “ ” off
position.

WARNING

Ensure that you maintain three points of
contact when using the ladder to mount/

dismount platform.

3. Use the ladder of aerial platform to access
platform.

4. Close the gate.

WARNING

Any lowered guardrail will create a fall
hazard. Remain away from the sides of
the platform while raising or lowering the

guardrails to avoid falling.

5. Remove the platform control console and outrigger
control console (if equipped) and lay it down on
the platform.

6. Fold guardrails down in the following order: rear,
front, left extension, right extension, left-side and
right-side (refer to Figure 3-12).

7. Remove all the locking pins on the rear guardrail
and fold the guardrail down.

8. If there is a manual extension, remove all locking
pins on the push bar and fold it down.

9. Remove all the locking pins that secured the
front guardrail to the left extension guardrail then
swing it towards the right extension and lock it
in place.

10. Remove all the locking pins on the left extension
and fold it down.

11. Remove all the locking pins on the right extension
guardrail and fold it down.

12. Remove all the locking pins on the left-side
guardrail and fold it down.

Page 58 Mid Size & Full Size RTs

Engine Powered

Section 3 - Operation Guardrail Folding Procedure

13. Remove all the locking pins on the right-side
guardrail and fold it down.

Figure 3-13. All Guardrails Folded Down

To raise the guardrail system up:

WARNING

The scissor assembly must be fully
lowered before raising or lowering the

guardrails.

1. Ensure aerial platform is on level ground.

2. Turn main power disconnect switch to “ ” off
position.

WARNING

Ensure that you maintain three points of
contact when using the ladder to mount/

dismount platform.

3. Use the ladder of aerial platform to access
platform.

6. Swing the left-side guardrail up and lock it in place
by inserting all locking pins.

7. Swing the right extension guardrail up and lock it
in place by inserting all locking pins on the right
extension.

8. Swing the left extension guardrail up and lock it
in place by inserting all locking pins.

9. Remove the locking pins and swing the front
guardrail forward. Lock it in place by inserting all
locking pins.

10. If there is a manual extension, swing push bar up
and lock in place by inserting all locking pins.

11. Swing the rear guardrail up then lock it in place
by inserting all locking pins.

12. Mount the platform control console and outrigger
control console (if equipped) at the front right of
the platform. Lock them in place.

WARNING

Before operating this aerial platform
check the guardrail system for loose
or missing locking pins. The guardrail
system must be upright and all pins must
be locked in place. Death or serious injury
could result if the guardrail system is not

upright or properly locked.

WARNING

Any lowered guardrail will create a fall
hazard. Remain away from the sides of
the platform while raising or lowering the

guardrails to avoid falling.

WARNING

Ensure that the detent ball of each locking
pin is all the way through and each spring

clip is fully inserted into the pin hole.

4. Raise the guardrails up in the following order:
right-side, left-side, right extension, left extension,
front and rear.

5. Swing the right-side guardrail up and lock it in
place by inserting all locking pins.

Mid Size & Full Size RTs
Engine Powered

Page 59

Maintenance Support Procedure Section 3 - Operation

3.12 Maintenance Support Procedure

This section provides the operator with procedure
regarding deployment and storage of maintenance
support.

The maintenance support is a safety mechanism
designed to support the scissor assembly. When
properly positioned it can support the scissor assembly
and empty platform. The maintenance support must
be used when inspection and/or maintenance is to be
performed within the lifting mechanism.

To Deploy the Maintenance Support

1. Remove all material from platform.

2. Raise platform until there is adequate clearance
to swing down maintenance support (item 1).

3. Push latch lever rearward.

4. Swing maintenance support down from storage
bracket into a vertical position.

WARNING

The maintenance support must be used
when inspection and/or maintenance or
repairs are to be performed within the
lifting mechanism. Failure to use this
safety mechanism could result in death

or serious injury.

Figure 3-14. Maintenance Support

5. Remove hands and arms from scissors area.

6. Lower platform until bottom end of maintenance
support contacts the labeled cross bar and
scissors are supported by maintenance support.

7. Turn main power disconnect switch to “ ” off
position.

To Store the Maintenance Support

1

1. Turn main power disconnect switch to “ ” on
position.

2. Raise platform until there is adequate clearance
to swing up the maintenance support.

3. Swing bar fully up into storage latch.

4. Lower the platform.

WARNING

Do not reach through the scissor assembly
when the platform is raised without the
maintenance support properly positioned.
Failure to avoid this hazard could result

in death or serious injury.

Page 60 Mid Size & Full Size RTs

Engine Powered

Section 4 Tables

Table 4.1 Standard and Optional Features

*****

*****

***

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

***

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

*****

Models

Mid-Size

Rough Terrain

7127 7135 8831 8841 9250

Full-Size Rough Terrain

S T A N D A R D E Q U I P M E N T

21.6 kW (29 hp) Kubota D1305 diesel water-cooled engine

4WD

Access ladders and half-height spring-hinged gates at both
sides of platform

Base control console

Color coded and numbered wiring system

Diamond pattern, all steel platform deck construction

Disc brake system on rear axle

D-rings (lanyard attachment points)

Flashing light and descent alarm

Forklift pockets ** *

Front and rear mounted 1.2 m rollout extension platform **

Front mounted 1.4 m roll out extension platform **

Front and rear mounted 1.5 m powered extension platform *

Hinged railing system with 15.25 cm (6 in.) toe boards

Hourmeter

Hydraulic oil level and temp. indicators

Lockable cabinets with swing-out door

Lowering warning system

Manual brake release

Maximum drive height Full Height Full Height Full Height Full Height 7.9 m

Operator horn

Overload sensing system

Platform control console

Rollout engine tray

Scissor guards

Self-centering scissors design

Tie downs/lifting eyes

Tie-down points

Tilt alarm with drive/lift cut out

Type #6 Foam-filled tires

Wiring for AC outlet on platform

3500 watt hydraulic generator

All motion audible alarm

Comprehensive parts/operating and service manual

Front and rear mounted 1.2 m powered extension platform ****

Front mounted 1.4 m powered extension platform **

Full-height spring-hinged gates at both sides of platform **

Grip lug, foam filled non marking tires

Hinged railing system

Independent/auto leveling outriggers **STD STD STD

Rotating amber beacon

Shop air line to platform

O P T I O N A L E Q U I P M E N T

139AA-AS

11

4

Mid Size & Full Size RTs
Engine Powered

Page 61

Tables Section 4

Table 4.2 Owner’s Annual Inspection Record

Model Number: _________________ Serial Number:__________________

20__

20__20__ 20__ 20__ 20__20__ 20__ 20__*

**

1000AA

As described earlier in this section, this decal is located on the scissor assembly. It must be completed after an annual
inspection has been completed. Do not use the aerial platform if an inspection has not been recorded in the last 13
months.

Pictorial Description

Inspection Date

*

Inspector Signature

**

Page 62 Mid Size & Full Size RTs

Engine Powered

Section 4 Tables

Table 4.3 Specifications and Features

Rev AB - Sept 9/11

MODEL

*

Weight

Overall width

Overall length

Platform Size (inside)

Height

Working Height

Platform Elevated Height

Stowed Platform Height

Drive Height

Standard Operating Times

Lift Time (Rated Load)

Lower Time (Rated Load)

Chassis

Normal Drive Speed

Elevated Drive Speed

Gradeability (Ramp Angle)

Tires (Solid Rubber)

Hydraulic Oil

Type

Tank Capacity (Liters)

Engine (RPM)

Engine Type

RPM Settings

Fuel Type

Fuel Tank Capacity (Liters)

Engine Oil Type

Recommended
Alternative Engine Oil

Engine Oil Capacity (Liters)

Coolant Type

Coolant Capacity (Liters)

Sound Pressure Level (ISO 3744)

Guaranteed MaximumSound Power
Level (ISO 4871)

7127 7135 8831 8841 9250

3972 kg 4259 kg 5684 kg 6173 kg 7407 kg

1.81 m

3.82 m 3.7 m

1.63 m x 2.97 m 1.7 m x 3.5 m

10.2 m 12.6 m 11.6 m 14.5 m 17.2 m

8.2 m 10.6 m 9.6 m 12.5 m 15.2 m

1.53 m 1.71 m 1.5 m 1.8 m 2 m

Full

38 s 38 s 52 s 56 s 64 s

47 s 45 s 47 s 53 s 86 s

5.69 km/h 4.2 km/h

0.50 km/h

Refer to Table 4.6 for tire specification and usage.

ATF Dexron III

80.48

Kubota D1305

1400 (Low) / 2800 (High)

80.48 49.21

SAE 10W-30

10W-30, API Service Designation CG-4, CF-4, CF, CD, SH

Anti-freeze / Water

0.35 km/h

30%

Diesel

6.0

4.0

67dB(A)

103dB

2.2 m

75.71

2.34 m

4.55 m

1.85 m x 4.39 m

7.9 m

3.8 km/h

0.72 km/h

67.38

64.35

140AA-AS

* Weights are approximate; refer to serial nameplate for specific weight. Values shown for models 7127 & 7135 are
for standard 4WD aerial platforms on foam filled tires and a manual extension platform. Values shown for models
8831, 8841 are for standard 4WD aerial platforms on foam filled tires and two rollout extension platforms. Values
shown for model 9250 are for standard 4WD on foam tires with two powered extension platforms.

Mid Size & Full Size RTs
Engine Powered

Page 63

Tables Section 4

Table 4.4 Maximum Platform Capacities (Evenly Distributed)

Total First Extension Second Extension

MODEL

Capacity Capacity Capacity

Number of

Occupants

Number of

Occupants

Number of

Occupants

One Extension Platform 680 kg 5 227 kg 2

7127

One Extension Platform 454 kg 4 159 kg 1

7135

Two Extension Platform 908 kg 6 227 kg 2 227 kg 2

8831

Two Extension Platform 681 kg 5 227 kg 2 227 kg 2

8841

Two Extension Platform 681 kg 5 227 kg 2 227 kg 2

9250

NOTE:

Occupants and materials are not to exceed rated load.

Capacities listed are for standard machines equipped with #6 tires.
Refer to capacity label at sides of platform for additional information and for models equipped with options.

Note: Maximum Wind Speed = 12.5 m/sec

Not Available

Not Available

141AA-AS

Page 64 Mid Size & Full Size RTs

Engine Powered

Section 4 Tables

Table 4.5 Floor Loading Pressure

MODEL

7127

7127

Outrigger Pads

7135

7135

Outrigger Pads

8831

8831

Outrigger Pads

8841

8841

Outrigger Pads

9250

9250

Outrigger Pads

Total Aerial

Platform

Weight

kg kg kPa

min* 3972 1589 1117 686

max* 5155 2062 1240 890

min* 4388 1755 340 635

max* 5155 2062 399 746

min* 4259 1704 1151 735

max* 5216 2086 1246 901

min* 4675 1870 362 676

max* 5216 2086 404 754

min* 5536 2214 1254 719

max* 6788 2715 1399 882

min* 5831 2333 451 690

max* 6788 2715 525 804

min* 6174 2448 1312 795

max* 7145 2858 1455 928

min* 6174 2566 496 759

max* 7145 2858 553 846

min* 7407 2963 1490 969

max* 8137 3255 1576 975

min* 7407 2963 573 765

max* 8137 3255 630 770

WHEEL LCP ** OUP **

Total Aerial Platform Load

kg/m

2

*

**

Mid Size & Full Size RTs
Engine Powered

142AA-AS

min - Total aerial platform weight with no options
max - Aerial platform weight + all options + capacity

LCP - Locally Concentrated Pressure is a measure of how hard the aerial platform presses on

the areas in direct contact with the floor. The floor covering (tile, carpet, etc.) must be able to
withstand more that the indicated values above.

OUP - Overall Uniform Pressure is a measure of the average load the aerial platform imparts
on the whole surface directly underneath it. The structure of the operating surface (beams, etc.)
must be able to withstand more than the indicated values above.

NOTE:

The LCP or OUP that an individual surface can withstand varies from structure to structure and
is generally determined by the engineer or architect for that particular structure.

Page 65

Tables Section 4

Floor Loading Pressure

Locally Concentrated Pressure (LCP): Overall Uniform Pressure (OUP):

Foot Print Area = Length x Width

2

or = (for outriggers)

πD

4

Weight of Aerial Platform + Capacity

LCP = 0.4 x

Foot Print Area

Base Area = Length x Width

Weight of Aerial Platform + Capacity*

OUP =

Base Area

* Capacity for max OUP only.

Length

Width

Width

Length

Width

Diameter (D)

Length

Page 66 Mid Size & Full Size RTs

Engine Powered

Section 4 Tables

Table 4.6 Tire Specifications

7127 7135 8831 8841 9250

10-16.5

CARLISLE US LOADER

10-16.5 OTR OUTRIGGER

(Non-Marking)

143AA-AS

*

O

Pressure (Factory)

(kPa)

(N/A) Not Available

Usage

*

S

Fill

Type

Ply

Rating

FULL SIZEMID SIZE

Tire Size

Fill Specification

#6F 10 N/A

#6F

Foam

10

Usage: (S)tandard Or (O)ptional

O

S

N/A

N/A S

OO

SS

7127 7135 8831 8841 9250

#6F 95 mm 95 mm 121 mm 121 mm 95 mm

144AA-AS

Rim Size

Backspace

WARNING

Tires must be checked by end user on a daily basis. Do not intermix tires of different types on one

aerial platform. Use only tires of type originally supplied.

Rim Backspace Diagram

Inboard

Backspace

Outboard

SECTION A-A

A

A

WARNING

Intermixing tires of different types or using tires of types other than those originally supplied with
this equipment can adversely affect stability. Therefore, replace tires only with the exact original
Skyjack-approved type. Failure to operate with matched approved tires in good condition may

Mid Size & Full Size RTs
Engine Powered

result in death or serious injury.

Page 67

Tables Section 4

General Maintenance

Frequency

Daily

3 months or

150 hours

Yearly

Frequency

Daily

3 months or

150 hours

Yearly

Lifting Mechanism

Labels A Scissor Guards A

Electrical A Sliders A

Limit Switches A Maintenance Support A

Hydraulic A Scissor Assembly A

Emergency Lowering Access Rod (All models except 9250) A Scissor Bumpers A

Hydraulic/Electrical Compartment Lift Cylinder(s) A

Main Power Disconnect Switch A Base

Base Control Switches A Base Weldment A

Battery A Wheel/Tire Assembly A

Manifolds A Drive Axle A

Electrical Panel A Steer Cylinder Assembly A

Load/Tilt Sensor A Tie Rod A

Hydraulic Tank (Model 9250) A Ladder A

Hydraulic Oil A Outriggers (If Equipped) A

Hydraulic/Fuel Compartment Manuals A

Hydraulic Tank (Models 71xx & 88xx) A Function Tests

Hydraulic Oil (Models 71xx & 88xx) A Platform Control Console

Fuel Tank A Test Emergency Stop A

Fuel Leaks A Test Lift Enable A

Engine Compartment Test Platform Raising/Lowering A

Engine Control Console A Test Enable Trigger Switch A

Radiator A Test Steering A

Muffler and Exhaust A Test Horn A

Engine Tray A Test Driving A

Hydraulic Pump A Test Brake A

Engine Oil Level A Test Speed Limit A

Engine Air Filter A Test Lowering Warning A

Fuel Leaks A Test Powerdeck Enable (If Equipped) A

Platform Assembly Test Extension Platform(s) (If Equipped) A

Lanyard Attachment Anchors A

AC Outlet on Platform A

Platform Control Console A Base Control Console

Powered Extension Control Console (If Equipped) A Test Emergency Stop A

Test Base Lift Enable A

Test Lower/Neutral/Raise Switch A

Test Emergency Lowering (Models 71xx & 88xx) A

Test Emergency Lowering (Model 9250) A

Test Main Power Disconnect Switch A

60603AE-AS-R

A - Perform Visual and Daily Maintenance Inspections & Functions Test. Refer to Section 2.3 and Section 2.4 of this manual.
B - Perform Scheduled Maintenance Inspection. Refer to Service & Maintenance manual.
* - Maintenance must be performed only by trained and competent personnel who are familiar with mechanical procedures

.

† - Refer to Skyjack's website @ www.skyjack.com for latest service bulletins prior to performing quarterly or yearly inspection.

B*†

Visual and Daily Maintenance Inspections

B*†

Test Emergency Powered Extension Platform Retraction Switch (Model

9250)

A

B*†

Before attempting any repair work, disconnect battery by turning main power disconnect switch to “

position. Preventive maintenance is the easiest and least expensive type of maintenance.

Table 4.7 Maintenance and Inspection Schedule

” off

Use original or manufacturer-approved parts and components for aerial platform.

Page 68 Mid Size & Full Size RTs

WARNING

Engine Powered

Section 4 Tables

Table 4.8 Operator’s Checklist

INSPECTION FREQUENCY

P
F

R

NA

N/A P F R N/A P F R

Function Tests

60604AD-AS-R

Test Main Power Disconnect Switch

Test Emergency Stop

Test Base Lift Enable

Test Lower/Neutral/Raise Switch

Test Emergency Lowering (Models 71xx & 88xx)

Test Emergency Lowering (Model 9250)

Test Steering

AC Outlet on Platform

Platform Control Console

Powered Extension Control Console (If Equipped)

Test Emergency Powered Extension Platform Retraction Switch
(Model 9250)

Base Control Console

Lanyard Attachment Anchors

Engine Oil Level

Hydraulic Pump

Engine Air Filter

Engine Compartment

Platform Assembly

Hydraulic Tank (Models 71xx & 88xx)

Engine Control Console

Radiator

Muffler and Exhaust

Fuel Leaks

Fuel Tank

Fuel Leaks

Engine Tray

Manifolds

Lifting Mechanism

Base

Hydraulic Oil (Models 71xx & 88xx)

Emergency Lowering Access Rod (All Models Except 9250)

Wheel/Tire Assembly

Hydraulic/Fuel Compartment

Electrical Panel

Load/Tilt Sensor

Hydraulic Tank (Model 9250)

OPERATOR'S CHECKLIS

T

Each item shall be inspected using the appropriate section of the Skyjack operating manual.

DAIL

Y

- FAIL

FREQUENTL

Y

- REPAIRED

A

NNUALL

Y

- NOT APPLICABLE

- PASS

Visual and Daily Maintenance Inspections

Labels

Electrical

Limit Switches

Base Control Switches

Battery

Serial Number:

Model:

Hourmeter Reading: Operator's Name (Printed):

Date:

Time: Operator's Signature:

A

s each item is inspected, check the appropriate box.

Hydraulic Oil

Scissor Bumpers

Lift Cylinder(s)

BI-ANNUALL

Y

Hydraulic/Electrical Compartment

Hydraulic

Main Power Disconnect Switch

Scissor Guards

Sliders

Maintenance Support

Scissor Assembly

Base Weldment

Manuals

Test Speed Limit

Drive Axle

Platform Control Console

Test Horn

Test Emergency Stop

Test Platform Raising/Lowering

Test Enable Trigger Switch

Test Extension Platform(s) (If Equipped)

Steer Cylinder Assembly

Ladder

Outriggers (If Equipped)

Test Lowering Warning

Tie Rod

Test Brake

Test Driving

Test Lift Enable

Test Powerdeck Enable (If Equipped)

Note:

Make a copy of this page or visit the Skyjack web site:








Mid Size & Full Size RTs

Engine Powered

Page 69

Section 5 Labels

Right Side

1

2

3

PSI/BAR

234
1

1234

1234

INCH
CM

75

5.2

PSI

BAR

+

+

=

MANUAL

126928AAZZ

124631AA

ZZ

WARNING

PSI/BAR

34
2
1

1234

4
123

INCH
CM

75

5.2

+

+

=

PSI

BAR

MANUAL

124631AA

ZZ

126928AA

ZZ

4

5

No. Label Pictorial Description

Skyjack Logo

1

Large Skyjack logo - blue and red

Tape Blue/White

2

Skyjack pinstripe

1

5

Caution Tape Stripe

3

Caution stripe

Wheel Specifications

4

Refer to manual for wheel type, offset, pressure and torque.

Foam-filled & Wheel load*

5

Indicate foam-filled tire and rated wheel load.

*Wheel load will vary over different aerial platforms.

Mid Size & Full Size RTs
Engine Powered

Page 71

Labels Section 5

Right Side (Continued)

WARNING

PSI/BAR

234
1

1234

1234

INCH
CM

75

5.2

PROPANE

PSI

BAR

+

+

=

MANUAL

126928AAZZ

124631AA

ZZ

PSI/BAR

34
2
1

1234

4

123

INCH
CM

75

5.2

+

+

=

PSI

BAR

MANUAL

124631AA

ZZ

126928AA

ZZ

87 9 6

No. Label Pictorial Description

“Keep Clear”

Keep clear.

6

Sound Power Level

Guaranteed maximum sound power level

7

Diesel

Use diesel fuel only.

8

4x4

Product identifier - 4 wheel drive

9

Page 72 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Right Side (Continued)

15

11121314

WARNING

PSI/BAR

234
1

1234

1234

INCH
CM

75

5.2

PROPANE

PSI

BAR

+

+

=

MANUAL

126928AAZZ

124631AA

ZZ

PSI/BAR

34
2
1

1234

4
123

INCH

CM

75

5.2

+

+

=

PSI

BAR

MANUAL

124631AA

ZZ

126928AA

ZZ

10 11

No. Label Pictorial Description

Tape - Red/Blue/Red

10

11

12

13

14

Skyjack pinstripe

Model Number*

Product Identifier

*Model number will vary, may not be as shown.

“Clear”

Keep clear.

“Keep”

Keep clear.

Annual Inspection

Ensure that aerial platform has received annual inspection prior
to operation.

Warning - Falling hazard. Hinge point.

15

WARNING! Falling Hazard. Make sure hinged railing is pinned.

Mid Size & Full Size RTs
Engine Powered

Page 73

Labels Section 5

Hydraulic/Fuel Compartment

1 3 42













No. Label Pictorial Description

Danger - Explosive Fumes

1

Danger - Explosive Fumes. Do not smoke while refueling aerial
platform.

Diesel

2

Use diesel fuel only.

No Smoking

3

Do not smoke near this location.

Hydraulic Oil ATF Dexron III

Replace hydraulic fluid with ATF Dexron III only.

4

Hydraulic Oil Level

Indicates minimum/maximum oil level.

Page 74 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Front Side

5

4

1

3

2

No. Label Pictorial Description

Caution Tape Stripe

1

Caution stripe

Lift and Tie Down Points

2

Only use these points for lifting or tying down.

Skyjack Logo

3

Large Skyjack logo - blue and red

Warning - Falling hazard. Hinge point.

4

WARNING! Falling Hazard. Make sure hinged railing is pinned.

No Step

5

WARNING! Do not step in this location.

Mid Size & Full Size RTs
Engine Powered

Page 75

Labels Section 5

Left Side

1

2

3

PSI/BAR

34
12

1234

4
123

INCH
CM

75

5.2

PSI

BAR

+

+

=

MANUAL

126928AAZZ ZZ 126928AA

124631AA

ZZ

4

! WARNING !

PSI/BAR

4
23
1

1234

34
12

INCH
CM

75

5.2

+

+

=

PSI

BAR

MANUAL

124631AA

XX 117023-1

L

WA

Bd

03

1

128226AA

ZZ

xx

123628AB

ZZ

5

1

No. Label Pictorial Description

Skyjack Logo

1

4

5

1

Large Skyjack logo - blue and red

Tape Blue/White

2

Skyjack pinstripe

Caution Tape Stripe

3

Caution stripe

Wheel Specifications

4

Refer to manual for wheel type, offset, pressure and torque.

Foam-filled & Wheel load*

5

Indicate foam-filled tire and rated wheel load.

*Wheel load will vary over different aerial platforms.

Page 76 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Left Side (Continued)

! WARNING !

PSI/BAR

34

12

1234

4
123

INCH
CM

75

5.2

PSI

BAR

+

+

=

MANUAL

126928AAZZ ZZ 126928AA

124631AA

ZZ

XX 117023-1

L

WA

Bd

03

1

128226AA

ZZ

xx

123628AB

PSI/BAR

4
23
1

1234

34
12

INCH
CM

75

5.2

+

+

=

PSI

BAR

MANUAL

124631AA

ZZ

6 7 8

9

No. Label Pictorial Description

Sound Power Level

Guaranteed maximum sound power level

6

4x4

Product identifier - 4 wheel drive

7

Tape - Red/Blue/Red

Skyjack pinstripe

8

Manual Storage Box

Indicates location of operating manual

9

Mid Size & Full Size RTs
Engine Powered

Page 77

Labels Section 5

Left Side (Continued)

14

10151213

! WARNING !

PSI/BAR

1234

PSI/BAR

234

1

1234

34
12

INCH
CM

75

5.2

PSI

BAR

+

+

=

MANUAL

126928AAZZ ZZ 126928AA

124631AA

ZZ

XX 117023-1

L

WA

Bd

03

1

128226AA

ZZ

xx

123628AB

1234

1234

INCH
CM

75

5.2

+

+

=

PSI

BAR

MANUAL

124631AA

ZZ

1011

No. Label Pictorial Description

Model Number*

10

11

12

13

14

Product Identifier

*Model number will vary, may not be as shown.

“Clear”

Keep clear.

“Keep”

Keep clear.

Annual Inspection

Ensure that aerial platform has received annual inspection prior
to operation.

Warning - Falling hazard. Hinge point.

WARNING! Falling Hazard. Make sure hinged railing is pinned.

“Keep Clear”

15

Keep clear.

Page 78 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Electrical Panel and Hydraulic/Fuel Compartment

9

1

Side View

8

7

Front View Rear View

2 3

54

No. Label Pictorial Description

Main Power Disconnect

1

Main power disconnect lever

6

Relay Names - Upper (Model 71xx)*

2

Relay names for Model 71xx electrical panel (upper bank)

*Note: Relay names will vary with differing units

Relay Names - Lower (Model 71xx)*

3

Relay names for Model 71xx electrical panel (lower bank)

*Note: Relay names will vary with differing units

Ground Circuit Breaker

4

Push to reset ground circuit breaker.

Power Circuit Breaker

5

Push to reset power circuit breaker.

Mid Size & Full Size RTs
Engine Powered

Page 79

Labels Section 5

Electrical Panel and Hydraulic/Fuel Compartment (Continued)

9

1

Side View

8

7

Front View Rear View

2 3

54

No. Label Pictorial Description

Winching/Towing/Pushing Procedure

6

Winching/towing/pushing procedure. Ensure brake is released
and free-wheeling valve is open before moving the unit manually.

Base Controls

6

Select “

7

Select “ ” platform to enable platform controls, “ ” off to

” to lower or “ ” raise platform.

disable controls or “ ” base to enable base control console.

Push “ ” to disable controls.

Emergency Lowering Procedure

8

In case of emergency, follow procedure outlined in label to lower
the platform.

Standards Compliance

9

Indicates standards to which aerial platform complies.

Page 80 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Back View

6

7

5

4

1

3

2 1

No. Label Pictorial Description

Lift and Tie Down Points

1

Only use these points for lifting or tying down.

Connect Platform A/C Supply

2

Connect A/C power supply here for platform accessory outlet.

Connect Air Supply

3

Connect platform air supply here.

Warning - Do Not Alter

4

Aerial platform altering warning

Standards Compliance

5

Indicates standards to which the aerial platform complies.

No Jewelry

6

Caution. Do not wear jewelry.

Operator Checklist

7

Operator checklist. Perform check prior to use.

Mid Size & Full Size RTs
Engine Powered

Page 81

Labels Section 5

9 10 9

8

13

9

10

11

12

Cylinder

No. Label Pictorial Description

Hazard Identification

Back View (Continued)

14

10

11

12

13

8

Read and understand the outlined risks associated with this aerial
platform prior to operation.

Warning - Falling hazard. Hinge point.

9

WARNING! Falling Hazard. Make sure hinged railing is pinned.

Caution Tape Stripe

Caution Strip

Platform Capacity*

Rated work load in each configuration is as shown.
*Platform capacity varies over different aerial platforms.













































Serial Plate*

Product identification and specifications

*Serial plate will vary over different aerial platforms.

Horizontal Load Rating*

Apply no more than the indicated side load. Operate below
indicated wind speed only.

*Rating will change over varying units.

Orifice Installed

14

Orifice installation warning

Page 82 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Outrigger and Engine Control Console

4

1

3

2

No. Label Pictorial Description

Keep Clear

1

Keep clear.

Crushing Hazard

2

Danger - crushing hazard

Warning - Do Not Alter

3

Aerial platform altering warning

Engine Control

Select “ ” to start, “ ” run or “ ” stop engine.

Select “ ” to energize glow plugs.

4

Do not start engine “ ”. Red lamp “ ” illuminates until the
glow plugs have completed the timed heating cycle. When the
lamp goes out, the engine is ready to be started.

Mid Size & Full Size RTs
Engine Powered

Page 83

Labels Section 5

Platform Control Console

1

2

3

4

No. Label Pictorial Description

Controller Operation

Squeeze “ ” trigger to enable controller.

Operate “ ” rocker switch to steer.

1

Move controller forward “

” to drive forward or backward “ ”

to drive reverse..

Low/High Speed Range

2

Select “

” for low speed (high torque) or “ ” high

speed (low torque).

Low/High Throttle

3

Select “

” low or “ ” high engine speeds.

Power On/Overload Indicator

4

Continuous illumination indicates upper control availability.
Flashing indicates aerial platform is overloaded.

Page 84 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Platform Control Console (Continued)

5

6

9 8 7

No. Label Pictorial Description

Raise/Off/Lower Platform

5

Select “ ” to raise the platform, “ ” to turn power off or “ ”
to lower the platform.

Lift/Off/Drive

6

Select “ ” to enable lift, “ ” off or “ ” drive mode.

Emergency Stop

7

Push to disable controls

Lift Enable

8

Select to enable lift mode.

Start Engine

9

Select to start engine.

Mid Size & Full Size RTs
Engine Powered

Page 85

Labels Section 5

Platform Control Console (Continued)

13

12

11

10

No. Label Pictorial Description

Glow Plug

10

11

12

13

Select to activate glow plugs.

Horn

Select to sound horn.

Low/High Torque

Select “ ” low speed (high torque) or “ ” high speed (low
torque).

Controller Connector Pinout

Controller connector pinout.

Page 86 Mid Size & Full Size RTs

Engine Powered

Section 5 Labels

Auxiliary Control Consoles

1 2

3

4

No. Label Pictorial Description

Powered Extension Platform Enable

1

Select to enable powered extension platform controls.

Powered Extension Platform Extend/Retract

2

Select “ “ to extend or “ “ to retract powered
extension platform.

Outrigger Controls with Generator

Select “ ” to retract or “ “ to extend for each outrigger.

Select “ ” to enable or “ ” disable generator.

Indicates leveling system status:

3

Off: The outriggers are fully retracted.

Flashing Rapidly: The outriggers are extending or

retracting.

Flashing: Not all outrigger legs have firm ground contact

or aerial platform is not level.

On: The outriggers are extended and the platform is

level.

Automatic Outrigger Controls

4

Select “ ” to retract all outriggers or “ ” to extend all
outriggers with automatic leveling.

Select “

” to enable manual or automatic outrigger controls.

Mid Size & Full Size RTs
Engine Powered

Page 87

Reliable lift solutions by people who care.

www.skyjack.com