Skyjack SJIII Series User manual

The Compacts and Conventionals
Models 32xx, 46xx
and 68xx
SJIIISeries
For Service please call ....................................................................... 800 275-9522
Skyjack Inc. Service Center, 3451 Swenson Ave., St. Charles, IL. 60174 FAX [phone]
For Parts in North America and Asia please call ..................................... 800 965-4626
Skyjack Inc. Parts Center, 3451 Swenson Ave., St. Charles, IL. 60174 .......... FAX [phone]
For Parts & Service in Europe please call .................................................. 44-1691-676-235
Skyjack Europe, Glovers Meadow, Maesbury Rd., Oswestry, Shropshire, U.K ........ FAX [phone]
129918AF-A Printed in Canada April 2006
OPERATING MANUAL
ANSI & CSA
This manual MUST be kept and stored with the aerial platform at all times.

Compacts & Conventionals
April 2006
SKYJACK, Page 2
USE THE SERIAL NUMBER OF YOUR MACHINE TO DETERMINE THE CORRECT
OPERATING MANUAL TO USE
MANUAL
PART # 118942AD 122882AJ 122908AE 129908AE 129917AF
(CE)
129918AF
(ANSI/CSA)
129939AD
(AS)
Release Date July 2003 July 2003 July 2003 July 2003 April 2006 April 2006 April 2006
3015 150931 & Below 150932 to 151981
3219 229632 & Below 229633 to 236285 Not Used Not Used
3215 151982 to 152099 152100 to 152169 152170 & Above
3219 Not Used 236286 to 237573 237574 to 239691 239692 & Above 244130 & Above
3220 611286 & Below 611287 to 613550 613551 to 615016 615017 to 615505 615506 & Above 616430 & Above
3226 Not Used 27013 to 28042
28048 to 28117
28043 to 28047
28118 to 270930 270931 to 271776 271777 & Above
4620 66658 & Below 66659 to 66875 66876 to 66889
4626 706174 & Below 706175 to 709362 709363 to 709588
4632 Not Used Not Used
710000 & Above
4830/32 87564 & Below 87565 to 870780 870781 to 871159 Not Used
6826 75578 & Below 75579 to 75618 75619 75620 & Above
M
O
D
E
L
6832 82573 & Below 82574 to 83066
Not Used
83067 to 83100 83101 & Above
60312AK
SJIIISeries
The Compacts and Conventionals
Models 32xx, 46xx
and 68xx
OPERATING MANUAL
ANSI & CSA
This manual MUST be kept and stored with the aerial platform at all times.

April 2006
SKYJACK, Page 3
Compacts & Conventionals
IMPORTANT
IMPORTANT indicates a procedure(s) essential for
safe operation and which, if not followed, may
result in a malfunction or damage to the machine.
This Safety Alert Symbol means attention!
Become alert! Your safety is involved.
The Safety Alert Symbol identifies important safety
messages on machines, safety signs in manuals
or elsewhere. When you see this symbol, be alert
to the possibility of personal injury or death. Fol-
low the instructions in the safety message.
DANGER
DANGER indicates an imminently hazardous
situation which, if not avoided, will result in death
or serious injury.
WARNING
WARNING indicates a potentially hazardous
situation which, if not avoided, could result in
death or serious injury.
CAUTION
CAUTION indicates a potentionally hazardous
situation which, if not avoided, may result in
minor or moderate injury. It may also be
used to alert against unsafe practices.

Compacts & Conventionals
April 2006
SKYJACK, Page 4
Table of Contents
Read and Heed
Aerial Platform Definition .......................................................................................................................................... 6
Purpose of Equipment .............................................................................................................................................. 6
Use of Equipment ..................................................................................................................................................... 6
Manual ....................................................................................................................................................................... 6
Operator .................................................................................................................................................................... 6
Optional Accessories ................................................................................................................................................ 6
Scope of this Manual ................................................................................................................................................ 6
Section 1 - About Your Aerial Platform
1.1 Major Assemblies ...............................................................................................................................................7
1.2 Platform ..............................................................................................................................................................7
1.3 Operator’s Control Box ......................................................................................................................................7
1.4 Manual Storage Box ...........................................................................................................................................7
1.5 Lifting Mechanism ..............................................................................................................................................7
1.6 Maintenance Support .........................................................................................................................................7
1.7 Base ...................................................................................................................................................................7
1.8 Tilt Sensing System ............................................................................................................................................8
1.9 Serial Number Nameplate ..................................................................................................................................8
1.10 Major Components.............................................................................................................................................9
1.11 Standard and Optional Features ......................................................................................................................10
1.12 Operator Safety Reminders .............................................................................................................................. 11
1.13 Electrocution Hazard ........................................................................................................................................ 11
1.14 Safety Precautions ............................................................................................................................................ 12
Section 2 - Operation
2.1 General ............................................................................................................................................................. 15
2.1-1 Operator Qualifications .....................................................................................................................15
2.1-2 Operator’s Responsibility for Maintenance ....................................................................................... 15
2.1-3 Maintenance and Inspection Schedule ............................................................................................. 15
2.1-4 Owner’s Inspections .......................................................................................................................... 15
2.2 Component Identification ................................................................................................................................. 16
2.2-1 Emergency Main Power Disconnect Switch ...................................................................................... 16
2.2-2 Motion Alarm ....................................................................................................................................16
2.2-3 Tilt Alarm ........................................................................................................................................... 16
2.2-4 Base Controls ................................................................................................................................... 16
2.2-5 Parking Brake System ......................................................................................................................17
2.2-6 Free-Wheeling Valve .......................................................................................................................... 17
2.2-7 Battery Charger ................................................................................................................................ 17
2.2-8 Pothole Protection Device ................................................................................................................ 18
2.2-9 Emergency Lowering System ........................................................................................................... 18
2.2-10 Maintenance Support ....................................................................................................................... 19
2.2-11 Operator’s Control Box ..................................................................................................................... 20
2.2-12 AC Outlet on Platform ....................................................................................................................... 20
2.2-13 Folding Guardrail System .................................................................................................................20
2.2-14 Lanyard Attachment Ring ................................................................................................................. 21
2.3 Component Identification (Special Options) .................................................................................................... 22
2.3-1 Power Extension Deck Control Box (If Equipped) ............................................................................22
2.3-2 1500W AC Inverter (If Equipped) ....................................................................................................... 22

April 2006
SKYJACK, Page 5
Compacts & Conventionals
Table of Contents
Section 2 - Continued
2.4 Setup Procedure ..............................................................................................................................................23
2.5 Start Operation ................................................................................................................................................. 25
2.5-1 Pre-Start Inspection ..........................................................................................................................25
2.5-2 Operator’s Checklist ......................................................................................................................... 25
2.5-3 To Raise the Platform using the Base Controls .................................................................................26
2.5-4 To Lower the Platform using the Base Controls ................................................................................26
2.5-5 To Raise the Platform using the Operator’s Control Box ................................................................... 26
2.5-6 To Lower the Platform using the Operator’s Control Box .................................................................. 27
2.5-7 To Drive Forward or Backward ..........................................................................................................27
2.5-8 To Steer .............................................................................................................................................28
2.5-9 To Select Drive Torque (If Equipped) . ...............................................................................................28
2.5-10 To Extend/Retract the Manual Extension Deck ................................................................................. 28
2.5-11 To Extend/Retract the Powered Extension Deck (If Equipped).... ..................................................... 29
2.5-12 Electrical Inverter (If Equipped) .........................................................................................................29
2.5-13 Shutdown Procedure ........................................................................................................................ 29
2.6 Loading/Unloading ........................................................................................................................................... 30
2.6-1 Lifting ................................................................................................................................................ 30
2.6-2 Driving ...............................................................................................................................................31
2.7 Winching and Towing Procedures .................................................................................................................... 32
2.7-1 To Release the Free-Wheeling Valve .................................................................................................32
2.7-2 To Release the Parking Brakes Manually ..........................................................................................33
2.7-2a Pin Brakes System .......................................................................................................... 33
2.7-2b Disc Brakes System ........................................................................................................33
2.8 Emergency Lowering Procedure ...................................................................................................................... 34
2.9 Battery Maintenance ........................................................................................................................................ 35
2.9-1 Battery Service Procedures ..............................................................................................................35
2.9-2 Battery Charging Operation .............................................................................................................. 35
2.10 Tables ...............................................................................................................................................................38
2.11 Labels ...............................................................................................................................................................44
List of Tables
Table 2-1. Specifications and Features ......................................................................................................................38
Table 2-2. Floor Loading Pressure .............................................................................................................................40
Table 2-3. Owner’s Annual Inspection Record ...........................................................................................................42
Table 2-4. Maximum Platform Capacities (Evenly Distributed) ................................................................................... 42
Table 2-5. Maintenance and Inspection Schedule .....................................................................................................43

Compacts & Conventionals
April 2006
SKYJACK, Page 6
Read and Heed
SKYJACK Inc. is continuously improving and expanding product features on its equipment, therefore,
specifications and dimensions are subject to change without notice.
Aerial Platform Definition
A mobile device that has an adjustable position platform supported from ground level by a structure.
Purpose of Equipment
The SKYJACK SJIII series 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. Lifting and driving MUST be on a flat, level,
compacted surface.
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.
Optional Accessories
The SKYJACK aerial platform is designed to accept a variety of optional accessories. These are listed under
“Standard and Optional Features” in Section 1.11.
Operating instructions for these options (if equipped) are located in Section 2 of this manual.
For options not listed under “Standard and Optional Features”, contact the SKYJACK Service Department at
800 275-9522 or fax: [phone], include the model and serial number for each applicable machine.
Scope of this Manual
a. This manual applies to the ANSI/SIA and, CSA versions of the SJIII Series aerial platform models listed on
Table 2-1a and Table 2-1b.
- Equipment identified with “ANSI” meets the ANSI SIA-A92.6-1999 standard.
- Equipment identified with “CSA” meets the CSA B354.2-01 standard.
b. CSA (Canada)
Operators are required to conform to national, territorial/provincial and local health and safety regulations
applicable to the operation of this aerial platform.
c. ANSI/SIA (United States)
Operators are required by the current ANSI/SIA A92.6 standards to read and understand His/Her
RESPONSIBILITIES in the Manual of Responsibilities before they use or operate this aerial platform.

Section 1 - About Your Aerial Platform
SKYJACK, Page 7
April 2006
Compacts & Conventionals
1
1. About Your Aerial Platform
This section provides general information about your
aerial platform. It describes the major components,
standard and optional features, safety reminders and
precautions.
1.1 Major Assemblies
The aerial platform consists of three major assemblies:
the platform, the lifting mechanism and the base. An
operator’s control box is mounted on one of the platform
guardrails. Auxiliary and emergency controls are located
at the base.
1.2 Platform
The platform is constructed of a tubular support frame, a
skid-resistant “diamond plate” deck surface and 39”
hinged guardrails with 6" toe boards and mid-rails. The
platform can be entered from the rear through an entry
chain or optional spring-returned gate with latch. The
platform is also equipped with an extension platform.
1.3 Operator’s Control Box
A removable control box, mounted at the front right of
the platform, contains controls for aerial platform motion
and emergency stopping.
1.4 Manual Storage Box
This weather-resistant box is mounted to the inside of
the hydraulic cabinet door at the base or at the front of
the platform. It contains the Operating
Manual, the Operating/Maintenance
and Parts Manual and other important
documentation. The Operating Manual
for this make and model of aerial
platform MUST remain with the aerial
platform and should be stored in this
box.
1.5 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 electric motor, provides hydraulic
power to the lift cylinders.
1.6 Maintenance Support
A maintenance support is located inside the lifting
mechanism. When properly positioned, it can support
the scissor assembly and empty platform. The
maintenance support MUST be used during inspection
and maintenance or when repairs are being performed
within the lifting mechanism.
1.7 Base
The base is a rigid, one-piece weldment which supports
two swing out trays.
•Pothole Protection: A mechanically actuated
angle, located under the outside of the trays,
rotates when lifting. This mechanism provides
pothole protection for elevated driving (except
models 6826 and 6832).
•On Models 3215 and 3219: One tray contains
the hydraulic and electrical components. The other
tray contains four (4) 6 volt batteries. The charger
is located at the rear of the machine. The front
axle has two hydraulic motor-driven wheels,
steerable by a hydraulic cylinder. The rear axle is
fixed and has one dual acting spring-applied
hydraulically-released parking brake.
•On Models 3220, 3226, 4620, 4626, 4632, 6826
and 6832: One tray contains the hydraulic and
electrical components. The other tray contains
battery charger and four (4) 6 volt batteries. The
front axle has two non-driven wheels, steerable
by a hydraulic cylinder. The rear axle has two
hydraulic motor-driven wheels and two spring-
applied hydraulically-released parking brakes.

April 2006
SKYJACK, Page 8
Section 1 - About Your Aerial Platform
Compacts & Conventionals
1.8 Tilt Sensing System
The tilt sensing system located on the base of the aerial
platform is designed to prevent lifting or driving when
the machine is on a slope greater than a predetermined
limit. If in this situation the platform must be fully lowered
immediately.
1.9 Serial Number Nameplate
The serial number nameplate, located at the rear of the
machine, lists the following:
• Model number
• Serial number
• Machine 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
Use this information for proper operation and mainte-
nance and when ordering service parts.

Section 1 - About Your Aerial Platform
SKYJACK, Page 9
April 2006
Compacts & Conventionals
1.10 Major Components
SKYJACK SJIII Series Aerial Platform
Operator’s
Control Box
Manual
Storage Box
Lifting
Mechanism
Extension
Platform
Battery
Tray
Pothole
Protection
Device
Hydraulic/
Electric
Tray
Base
Maintenance
Support
Main
Platform

April 2006
SKYJACK, Page 10
Section 1 - About Your Aerial Platform
Compacts & Conventionals
SJIII Series – Compacts & Conventionals – SPECIFICATIONS – ANSI/CSA & AS
Compacts Conventionals
Models 3215 3219 3220 3226 4620 4626 4632 6826 6832
S T A N D A R D E Q U I P M E N T
Drivable at full height * * * * * * * * *
Positive traction * * * * * * * * *
Dual holding brakes * * * * * * * * *
Battery charge indicator * * * * * * * * *
Battery level indicator * * * * * * * * *
Low voltage battery protection * * * * * * * * *
Color coded and numbered wiring system * * * * * * * * *
Swing out trays for easy access * * * * * * * * *
Proportional control for drive/lift with joystick
control * * * * * * * * *
Tilt alarm with drive/lift cut out * * * * * * * * *
GFCI AC outlet on platform * * * * * * * * *
Lanyard attachment points * * * * * * * * *
Forklift pockets/tie downs/lifting lugs * * * * * * * * *
Hydraulic oil level and temperature indicators * * * * * * * * *
All motion audible alarm * * * * * * * * *
Operator horn * * * * * * * * *
Midrail chain entrance * * * * * * * * *
Top railing with a midrail & 6” (0.15m) toeboard * * * * * * * * *
Hourmeter * * * * * * * * *
Base controls * * * * * * * * *
Hinged railing system * * * * *
Variable front wheel hydraulic drive * *
Variable rear wheel hydraulic drive * * * * * * *
Freewheeling valve * * * * * * * * *
Pothole protection * * * * * * *
3’ (0.9m) Extension deck * * * * * *
4’ (1.2m) Extension deck * * *
O P T I O N A L E Q U I P M E N T
Flashing Light * * * * * * * * *
Shop airline to platform * * * * * * * * *
Spring loaded half or full gate entry** * * * * * * * * *
Hinged railing system * * * *
5’ (1.5m) Powered deck extension * *
6’ (1.8m) Powered deck extension * * *
EE rating package * * * * * * * * *
Inverter * * * * * * * * *
Non-marking foam filled tires * *
60381AC-ANSI
** Full hei
g
ht
g
ate not available with hin
g
ed railin
g
s on 32xx models
1.11 Standard and Optional Features

Section 1 - About Your Aerial Platform
SKYJACK, Page 11
April 2006
Compacts & Conventionals
1.12 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 Inc.
1.13 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 MACHINE AS A GROUND FOR WELDING.
DO NOT OPERATE THE MACHINE DURING LIGHTNING OR STORMS.
Failure to comply with your required responsibilities in the use and operation of the aerial platform
could result in death or serious injury!
Warning
DANGER
Avoid Power Lines
Minimum Safe Approach Distance
ANSI/SIA A92.6-1999 &
CSA B354.2-01 Requirements
Voltage Range Minimum Safe Approach Distance
(Phase to Phase) Feet
0 To 300V Avoid Contact
Over 300V to 50KV 10
Over 50KV to 200KV 15
Over 200KV to 350KV 20
Over 350KV to 500KV 25
Over 500KV to 750KV 35
Over 750KV to 1000KV 45
FAILURE TO AVOID THIS HAZARD WILL RESULT IN DEATH OR SERIOUS INJURY!
600
2
3
A
C
-AN
S
I

April 2006
SKYJACK, Page 12
Section 1 - About Your Aerial Platform
Compacts & Conventionals
•DO NOT increase the lateral sur-
face area of the platform. Increas-
ing the area exposed to the wind
will decrease machine 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 nec-
essary, elevated driving shall not
be allowed. Position the aerial
platform horizontally only with the
platform fully lowered. After ensur-
ing that all 4 wheels or outriggers
(if equipped) have contact with
level firm surface, the aerial plat-
form can be elevated. After eleva-
tion, the drive function must not
be activated.
•Elevated driving must only be
done on a firm level surface.
•DO NOT ascend or descend a
grade steeper than 23% (3215 &
3219) or 25% (3220, 3226, 4620,
4626, 4632, 6826 & 6832). Ascend
or descend grades only when
fully lowered and then only to the
maximums noted above.
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 MACHINE and JOBSITE.
•TURN the emergency main power disconnect switch
OFF when leaving the machine 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 condi-
tions.
•DO NOT wear loose clothing,
dangling neckties, scarves,
rings, wristwatches or other
jewelry while operating this lift.
•AVOID entanglement with
ropes, cords or hoses.
•AVOID falling. Stay within the
boundaries of the guardrails.
•DO NOT raise the aerial platform
in windy or gusty conditions.
1.14 Safety Precautions
Know and understand the safety precautions before going on to next section.

Section 1 - About Your Aerial Platform
SKYJACK, Page 13
April 2006
Compacts & Conventionals
1.14 Safety Precautions (Continued)
Know and understand the safety precautions before going on to next section.
•DO NOT raise the aerial platform
while the machine is on a truck,
fork lift or other device or vehicle.
•BE AWARE of crushing hazards.
Keep all body parts inside platform
guardrails.
•DO NOT lower the platform un-
less 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.
•BE AWARE of blind spots when operating the aerial
platform.
•STUNT driving and horseplay are prohibited.
•ENSURE ALL tires are in good condition and lug
nuts are properly tightened.
•DO NOT alter or disable limit switches or other safety
devices.
•DO NOT use the aerial platform without guardrails,
locking pins and the entry gate/chain/bar in place.
•DO NOT exceed the rated capacity of the aerial
platform. Do make sure the load is evenly distrib-
uted on the platform.
•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 in-
crease 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 sit, stand or climb on the
guardrails. It is prohibited.
•DO NOT climb on scissor arm
assembly. It is prohibited.
•BE AWARE of overhead obstruc-
tions or other possible hazards
around the aerial platform when
driving or lifting.

April 2006
SKYJACK, Page 14
Section 1 - About Your Aerial Platform
Compacts & Conventionals
1.14 Safety Precautions (Continued)
Know and understand the safety precautions before going on to next section.
•DO NOT overload the platform. The lift relief valve
does not protect against overloading when the
platform is elevated.
•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 an-
other object to steady the platform.
•DO NOT place materials on the guardrails or ma-
terials 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 system.
• Use only equipped access openings and
ladders.
• Enter and exit only when the aerial platform
is in the fully retracted position.
• Do use three points of contact to enter and exit
the platform. Enter and exit the platform from the
ground only. Face the machine 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.
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.
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.
Failure to avoid these hazards could result in
death or serious injury.

SKYJACK, Page 15
April 2006
Section 2 - Operation
General
Compacts & Conventionals
2. Operation
This section provides the necessary information needed
to operate the aerial platform. It covers the basic and
optional components of the machines, operation and
start procedures, winching and towing procedures,
loading/unloading, tires specifications, labels, platform
capacities and tables related to the proper maintenance
of this machine. It is important that the user reads and
understands this section before operating the aerial
platform.
2.1 General
In order for this aerial platform to be in good working
condition, it is important that the operator meets the
necessary qualifications and follows the maintenance
and inspection schedule referred to in this section.
2.1-1 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, manual of responsibilities 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.
2.1-2 Operator’s Responsibility for
Maintenance
Warning
Maintenance MUST be performed by 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.
• 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 found in Table 2-5, even if the operator
is not directly responsible for the maintenance of
this aerial platform.
2.1-3 Maintenance and Inspection
Schedule
• The inspection points covered in Table 2-5 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 equivalent to the original parts and
components for the aerial platform.
2.1-4 Owner’s Inspections
It is the responsibility of the owner to arrange daily,
weekly, monthly and annual inspections of the aerial
platform. Refer to Table 2-5 for recommended mainte-
nance and inspection areas and intervals. A record of
annual inspection is kept on a label located on the scis-
sor assembly. Refer to Table 2-3 in this manual.
2

April 2006
SKYJACK, Page 16
Section 2 - Operation Component Identification
Compacts & Conventionals
2.2 Component Identification
The following descriptions are for identification,
explanation and locating purposes only.
2.2-1 Emergency Main Power Disconnect Switch
Emergency Main Power Disconnect Switch - This
switch is located at the rear of the base.
Figure 2-1. Emergency Main Power
Disconnect Switch
1. Emergency 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.
2.2-2 Motion Alarm
The aerial platform is equipped with a motion alarm.
The alarm produces an audible sound accompanied
by the amber light (if equipped) when any control
function is selected.
2.2-3 Tilt Alarm
The aerial platform is equipped with a device which
senses when the machine 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 equipped).
This alarm activates once every 1.5 seconds. Lower
platform completely, then reposition machine so that it
is level before raising platform.
Note
If the tilt alarm sounds and the platform does not,
or only partially raises, immediately lower the
platform and ensure that the machine is on a firm
LEVEL surface.
1
2.2-4 Base Controls
2.2-4a. Models 32xx & 46xx:
This control station is found on the rear of the base. It
contains the following controls:
Figure 2-2. Base Controls
1. Platform UP/DOWN Select Switch - This switch
raises or lowers the platform to a desired height.
2. Enable Button - This switch, when activated,
brings power to the platform UP/DOWN select
switch.
2.2-4b. Models 68xx:
This control station is located in the hydraulic/electric
side tray. It contains the following controls:
Figure 2-3. Electrical Panel
1. Buzzer Alarm - This audible pulse alarm will beep
in varying intervals depending on the status of the
platform.
2. Platform UP/DOWN Toggle Switch - This toggle
type switch raises or lowers the platform to a
desired height.
3. Hourmeter - This gauge records the accumulated
time of operation of the aerial platform.
4. Circuit Breaker Resets - In the event of a power
overload or positive circuit grounding, the circuit
breaker will pop out. Push the breaker back in to
reset.
3215 & 3219 3220, 3226 & 46xx
1
2
13
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SKYJACK, Page 17
April 2006
Component Identification Section 2 - Operation
Compacts & Conventionals
2.2-7 Battery Charger
This machine is battery-powered and is equipped with
a battery charger.
Battery Charger - The charger is located on the rear of
the base or inside the battery tray. For details on charg-
ing operation, refer to Section 2.9-2.
Figure 2-6. Battery Charger
2.2-6 Free-Wheeling Valve
Free-Wheeling Valve - The free-wheeling valve is lo-
cated at the front and/or rear of the machine (depend-
ing on the model).
3220, 3226, 46xx & 68xx
3215 & 3219
Figure 2-5. Free-Wheeling Valve
1. Free-Wheeling Valve - Turning the valve knob
(counterclockwise) to a fully opened position allows
fluid to flow through the wheel motors, thus providing
“free-wheeling” so that the aerial platform can be
pushed, towed or winched after the brakes are
released without damaging the wheel motors. The
free-wheeling valve MUST be closed tightly
(clockwise) for normal operation. Refer to Section
2.7-1 for procedure on how to release the free-
wheeling valve.
1
1
2.2-5 Parking Brake System
The parking brake system is located at the rear axle
on the back of the machine.
Pin Brakes (If Equipped)
DiscBrakes (If Equipped)
Figure 2-4. Parking Brakes
1. Brake plunger (black knob)
2. Parking brake release hand pump (red knob)
Parking Brakes - The parking brakes are devices that
are always mechanically engaged until hydraulically or
manually released. Before towing or winching, the
brakes have to be released manually. Refer to Section
2.7-2.
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April 2006
SKYJACK, Page 18
Section 2 - Operation Component Identification
Compacts & Conventionals
2.2-8 Pothole Protection Device
Figure 2-7. Pothole Protection Device
1. Pothole Protection Device - This device consists
of a set of mechanically actuated steel weldments
located under the hydraulic/electric tray and
battery tray. These weldments will automatically
rotate for reduced ground clearance when
elevating the aerial platform. If the pothole
protection device has not fully lowered, the drive
function will be disabled.
Warning
Crushing Hazard
Personnel on ground MUST stay clear of pothole
protection device.
Warning
Do not drive elevated in areas where electrical cords
or debris are in the path of travel.
Maintenance of the Pothole Protection Device
As with all safety devices, periodic inspection and
maintenance is required to ensure the proper operation
of the pothole protection device. This mechanism is
designed to reduce ground clearance and assist in the
stability of an elevated aerial platform in the event the
machine encounters a “Drop-off” or “Pothole”. The nature
of this safety feature relies on maintaining a consistent
ground clearance, therefore, if the machine ever does
come to rest on the pothole device, the platform should
be immediately lowered and “locked out” to prevent
further use until a complete inspection of the mechanism
is performed by a qualified technician.
1
2.2-9 Emergency Lowering System
Emergency Lowering System - This system allows
platform lowering in the event of an emergency or an
electrical system failure. Refer to Section 2.8 for the
emergency lowering procedure. The system contains
the following controls:
Figure 2-8. Emergency Lowering System
1. Emergency Lowering Valve - Located at the rear
of the hydraulic/electric tray.
2. Holding Valve Manual Override Knob - Located
on the holding valve at the bottom of each lift
cylinder.
3. Access Rod (3226, 4626, 4632 & 68xx) - Located
at the left side of the base.
3
2
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SKYJACK, Page 19
April 2006
Component Identification Section 2 - Operation
Compacts & Conventionals
To Store the Maintenance Support
• Turn on emergency main power disconnect
switch.
• Raise platform until there is adequate clearance
to swing up the maintenance support.
• Swing bar up into storage bracket.
• Lower 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.
2.2-10 Maintenance Support
Figure 2-9. Maintenance Support
1. 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.
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.
Proper Use of Maintenance Support
•Remove all material from platform.
•Raise platform until there is adequate clearance
to swing down the maintenance support. Refer to
Section 2.5-3 on how to raise the platform using
the base controls.
•Swing maintenance support down from stor-
age bracket into a vertical position.
•Remove hands and arms from scissor assembly
area.
•Lower platform until bottom end of maintenance
support contacts the labeled cross bar and
scissor assembly are supported by maintenance
support. Refer to Section 2.5-4 on how to lower
the platform using the base controls.
•Turn off emergency main power disconnect switch.
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April 2006
SKYJACK, Page 20
Section 2 - Operation Component Identification
Compacts & Conventionals
6. LIFT/OFF/DRIVE Select Toggle Switch (If
Equipped) - Selecting “OFF” position disconnects
power from both lift and drive circuits. Selecting
“LIFT” position energizes the lift circuit. Selecting
“DRIVE” position energizes the drive circuit.
7. Emergency Stop Button - When depressed, this
red “mushroom-head” push-button switch
disconnects power to the control circuit.
2.2-12 AC Outlet on Platform
AC Outlet on Platform - This outlet is a source of 110V
power on the platform.
Figure 2-11. AC Outlet on Platform
6
31
5 7
2
4
2.2-11 Operator’s Control Box
Operator’s Control Box - This metal control station is
mounted at the right front of the platform. It contains the
following controls:
Figure 2-10. Operator’s Control Box
1. OFF/ON Key Switch - Disconnects or energizes
the control circuit in the operator’s control box.
2. LIFT/DRIVE/STEER Controller - A one-hand
toggle-type lever to control lift/drive and steer
motions. Internal springs return it to neutral when
stick is released.
3. LIFT/DRIVE/STEER Enable Trigger Switch - This
momentary switch energizes the proportional
controller. It must be held depressed continuously
while engaging either the lift/drive or steer
functions.
4. Horn Push-Button - Located on the side of the
operator’s control box, this push-button switch,
when depressed, sounds an automotive-type
horn.
5. HIGH/NORMAL Torque Select Toggle Switch
(If Equipped) - This switch selects “HIGH” torque
(low speed) or “NORMAL” torque (high speed).
2.2-13 Folding Guardrail System
Folding Guardrail System - This system, when folded
down, reduces the height of the retracted aerial platform
for transporting and traveling through doorways only.
Figure 2-12a. Folding Guardrail System
1. Guardrail Locking Pin with Lanyard - This
pin is used to lock the guardrail in place.
1
Left
Entrance
Right Extension