cause injury or death. Only trained and authorized operators
should operate this vehicle.
Before starting the engine, do the following:
1. Read this owner/operators manual.
2. Read all the safety decals on the vehicle.
3. Clear the area of other persons.
Learn and practice safe use of vehicle controls in a safe,
clear area before you operate this vehicle on a worksite.
It is your responsibility to observe applicable laws and
regulations and to follow manufacturer's instructions on
vehicle operation and maintenance.
CALIFORNIA
Proposition 65 Warning
Diesel Engine exhaust and some of its constituents
are known to the State of California to cause
cancer, birth defects and other reproductive harm.
CALIFORNIA
Proposition 65 Warning
Battery posts, terminals and related accessories
contain lead and lead compounds, chemicals
known to the State of California to cause cancer
and birth defects or other reproductive harm.
Wash hands after handling
This Owners/Operators Manual provides the information you need to
properly operate and maintain this vehicle.
IMPORTANT! Before
and carefully so you will understand the safety instructions and the
operation of the controls and safety equipment. You must comply with all
Danger, Warning, and Caution notices. They are for your benefit.
All reference to the right side, left side, front, or rear are given from the
operator's seat looking in a forward direction.
JLG Industries, Inc. is hereinafter referred to as JLG.
you operate this vehicle, read this manual completely
Replacement Parts
For easy reference when ordering
replacement parts or making service
inquiries on this vehicle, record its
model and serial number on the back
cover of this manual. The serial
number is stamped into the serial
number plate (1) which is located on
the vehicle’s frame.
IMPORTANT! The replacement of
any part on this vehicle by anything
other than a JLG authorized
replacement part may adversely
affect the performance, durability or
safety of this vehicle and may void the warranty. JLG assumes no liability
for unauthorized replacement parts which adversely affect the performance,
durability or safety of this vehicle.
1
OH0280
Reports
IMPORTANT! A Warranty Registration form must be filled out by the Sky
Trak Distributor, signed by the purchaser, and returned to JLG once the
product is sold and/or put into service. This report activates the warranty
period, assuring that your claims during the warranty period will be
processed promptly. To guarantee full warranty service, make sure your
Sky Trak Distributor has returned the business reply card of this form to
JLG.
2
Model 8042 Rev. 11/03
Safety Practices
Safety Practices
Disclaimer
JLG reserves the right to make changes on and to add improvements upon
its products at any time without public notice or obligation. JLG also
reserves the right to discontinue manufacturing any product at its discretion
at any time.
NOTICE: Under OSHA rules, it is the responsibility of the employer to
provide operator training. Successful completion and certification of Safety
Training for Rough Terrain Forklifts is required. Operator Training Kits are
available by calling Ken Cook Company at (414) 466-6060. An order form
for these kits is available through our website,
http://www.jlg.com.
The information in this manual does not replace any safety rules and laws
used in your area. Before operating this vehicle, learn the rules and laws for
your area. Make sure the vehicle has the correct equipment according to
these rules and laws.
Your safety and the safety of others in the worksite depend significantly
upon your knowlege and understanding of all correct operating practices
and procedures for this vehicle.
WARNING: DO NOT modify or alter (weld, drill, etc.) any
part of this vehicle without consulting JLG. Modifications can
weaken the structure creating a hazard that can cause death or
serious personal injury.
Hazard Classification System
OP0330
This safety alert symbol is used with the following signal words to attract
your attention to messages found within the manual and on hazard decals
located on the vehicle. They are reproduced herein and pertain to proper
operation and procedure messages contained throughout the manual. The
message that follows the symbol contains important information about
Safety. To avoid possible death or serious personal injury, carefully read and
follow the messages! Be sure to fully understand the potential causes of
death or injury.
Model 8042 Rev. 11/03
3
Safety Practices
Signal Word
A signal word is a distinctive word located on hazard decals and used
throughout this manual that alerts the viewer to the existence of and relative
degree of the hazard.
DANGER:
The signal word “DANGER” indicates an imminently hazardous situation
which, if not avoided, will result in death or serious personal injury.
WARNING:
The signal word “WARNING” indicates a potentially hazardous situation
which, if not avoided, could result in death or serious personal injury.
CAUTION:
The signal word “CAUTION” indicates a potentially hazardous situation
which, if not avoided, may result in minor or moderate injury.
CAUTION:
The signal word “CAUTION”, used without the safety alert symbol, indicates
a potentially hazardous situation which, if not avoided, may result in
property damage.
For safe maintenance of the vehicle, read, understand and follow all
DANGER, WARNING and CAUTION information.
4
Model 8042 Rev. 11/03
Safety Practices
Accident Prevention Tags
Before beginning any maintenance or service, place an Accident Prevention
Tag (1) on both the starter key switch (2) and the steering wheel (3), stating
that the vehicle should not be operated. Actual Accident Prevention Tags,
which can be punched out and used, are included as the last page of this
manual. Retain these Accident Prevention Tags for reuse at a later date.
3
DANGER
DANGER
1
2
OH3350
New or Additional Operators
At the time of original purchase, the purchaser of this vehicle was instructed
by the seller on its proper use. If this vehicle is to be used by an employee or
is loaned or rented to someone other than the purchaser, make certain that
the new operator is trained, in accordance with the OSHA regulations
referenced on page 3, and reads and understands this Operators Manual
before
operating the vehicle.
In addition, make sure that the new operator has completed a walk-around
inspection of the vehicle, is familiar with all decals on the vehicle, and has
demonstrated the correct use of all controls.
Model 8042 Rev. 11/03
5
Safety Practices
Instructional Symbols
The following symbol definitions will help you understand all hazard
related decals and load charts used on this vehicle.
OP0330
Safety Alert Symbol
OH2100
Read Operator’s Manual
OH2090
Fasten Seat Belt
OH3100
This Symbol Signifies That
Specific Attachments Must
Only Be Used On Vehicles
Equipped With Auxiliary
Hydraulics.
Always Connect Couplers.
6
Model 8042 Rev. 11/03
Hazard Symbols
Safety Practices
OH2110
-
Lead Acid Batteries
Generate Explosive
Gases
OH2300
Rotating Belts Can Cut
Or Entangle
OH2120
Rotating Fan Blades
Can Cut
OH2150
Electrocution Can
Cause Death Or
Serious Injury
OH3160
OH2130
Vehicle Tipover Can
Crush
OH2140
Vehicle Roll Away Can
Cause Death Or Serious
Injury
OH3110
AVOID CRUSHING, Falling Off
Vehicle Can Cause Death Or
Serious Injury
FALLING OFF ATTACHMENT Can
Result In Death Or Serious Injury
Model 8042 Rev. 11/03
OH2161
Swinging Loads Can Cause
Vehicle Tipover Which Can Result
In Death Or Serious Injury
OU1450
ENGINE EXPLOSION
Can Result In Death Or
Serious Injury
7
Safety Practices
Avoidance Symbols
OH2320OH2330
Keep Lit Cigarettes
Away
OH2310OH2270
Keep Away From
Rotating Fan Blades
OH2280
Do Not Raise Boom
While On A Slope
Keep Flames and
Ignition Sources Away
OU1520
Stop Operation At
This Point
OU1510
Prohibition
Symbol. DO NOT
Operate
Do Not Travel With
Boom Raised
OH2290
Maintain Proper Air
Pressure In Tire
To Avoid Vehicle Tipover
ALWAYS:
•Travel Slowly
• Rig Properly
• Use Two Tethers
OH3120
8
Model 8042 Rev. 11/03
Safety Practices
Avoidance Symbols (cont’d)
OH2260OH2250
Engage Parking Brake
Do Not Travel With
Personnel In Work
Platform
OU1460
DO NOT Use Ether Or
Other High Energy
Starting Aids.
Engine Equipped With
Grid Heating System.
Keep Clear Of Power
Lines
OH2240OH2230
Carry No Riders
OH2170
Use Only Compliant Work
Platforms To Raise Or Lower
Personnel
DO NOT JUMP
• Brace Yourself and Stay
With Vehicle
• Keep Seat Belt Fastened
• Hold On Firmly
• Lean Away From The Point
OH2220
Of Impact
Model 8042 Rev. 11/03
9
Safety Practices
Personal Considerations
1. Seat Belt
Always fasten the seat belt before starting the engine.
2. Clothing and Safety Gear
DO NOT wear loose clothing or jewelry that can get caught on controls
or moving parts. Wear protective clothing and personal safety gear
issued or called for by job conditions.
3. Dismounting
DO NOT get off the vehicle until you:
• level the vehicle,
• ground the carriage,
• place the travel select lever in
(N) NEUTRAL,
• place the neutral lock lever in (N)
NEUTRAL LOCK,
• engage the parking brake
switch,
• turn the engine OFF, if appropriate,
• unbuckle the seat belt,
• exit the vehicle using the hand holds.
4. Chemical Hazards
A. Exhaust Fumes
Fumes from the engine exhaust can cause death or serious
personal injury. DO NOT operate vehicle in an enclosed area
without a ventilation system capable of routing the hazardous
fumes outdoors.
B. Explosive Fuel
Engine fuel is flammable and can cause a fire and/or an explosion.
Avoid danger by keeping sparks, open flames and smoking
materials away from the vehicle and from fuel during refueling or
when servicing the fuel system. Know where fire extinguishers are
kept on the worksite and how to use them.
10
OH1650
Model 8042 Rev. 11/03
Safety Practices
C. Ether or High Energy Starting Aids
The engine utilizes a grid heating system inside the induction
manifold for cold starting conditions.
WARNING: This diesel engine uses a grid heating system
inside the induction manifold. DO NOT use ether or any high
energy fuels to assist starting. An explosion may cause death or
serious personal injury or engine damage.
DO NOT use ether or any
other high energy starting
aids during cold starting. An
engine explosion can result
in death or serious personal
injury.
D. Hydraulic Fluid
DO NOT attempt to repair or tighten any hydraulic hoses or fittings
while the engine is running or when the hydraulic system is under
pressure. Fluid in the hydraulic system is under enough pressure
that it can penetrate the skin causing death or serious personal
injuries.
ENGINE EXPLOSION can
result in death or serious
personal injury.
DO NOT use Ether or other
high energy starting aids.
Engine equipped with
grid heating system.
4110460
OU1470
HOT HYDRAULIC FLUID WILL CAUSE SEVERE BURNS. Wait
for fluid to cool down before disconnecting lines.
DO NOT use your hand to check for leaks. Use a piece of
cardboard or paper to search for leaks. Wear gloves to protect
hands from spraying fluid.
Hydraulic fluid can cause permanent eye injury. Wear appropriate
eye protection and stop engine. Relieve pressure before
disconnecting lines by moving all joysticks back and forth through
all functions.
If anyone is injured by or if any hydraulic fluid is injected into the
skin, obtain medical attention immediately or gangrene may result.
Model 8042 Rev. 11/03
11
Safety Practices
E. Batteries
The following WARNING is intended to supplement and does not
replace the warnings and information provided on the battery by the
battery manufacturer.
When jump starting the vehicle, carefully follow instructions found
under “Jump Starting” on page 57.
-
Keep sparks, flames and lit smoking materials away from the
battery at all times. Lead acid batteries generate explosive gases.
Severe chemical burns can result from improper handling of battery
electrolyte. Wear safety glasses and proper protective gear when
handling batteries to prevent electrolyte from coming in contact with
eyes, skin or clothing.
OS0621
Battery Electrolyte First Aid:
• External Contact — Flush with water.
• Eyes — Flush with water for at least 15 minutes and
get medical attention immediately
• Internal Contact — Drink large quantities of water. Follow
with Milk of Magnesia, beaten egg or vegetable oil.
Get medical attention immediately
IMPORTANT! In case of internal contact, DO NOT give fluids that
would induce vomiting!
12
.
.
Model 8042 Rev. 11/03
Safety Practices
5. Moving Parts Hazard
DO NOT place limbs near moving parts. Severing of any body part can
result.
Turn OFF engine and wait until fan and belts stop moving before
servicing.
MOVING PARTS can cut.
Keep clear of fan and belts
while engine is running.
MOVING PARTS can entangle.
OT0810
6. Lowering Boom or Falling Load Hazard
DO NOT get under a raised boom unless it is blocked up safely. Always
empty the attachment of any load and block the boom up before doing
any servicing that would require the boom to be raised.
NEVER allow anyone to walk or stand under the boom. A lowering
boom or falling load can result in death or serious personal injury.
Model 8042 Rev. 11/03
13
Safety Practices
Operational Considerations
1. Preparation and Prevention
Know the location and function of all vehicle controls.
Make sure all persons are away from the vehicle and that the travel
select lever is in the (N) NEUTRAL position with the parking brake
switch engaged before starting the engine.
Holes, obstructions, debris and other worksite hazards can cause death
or serious personal injury. Always walk around and look for these and
other hazards before operating the vehicle in a new worksite.
Prevent accidents when you move the vehicle around the worksite.
Know the rules for movement of people and vehicles on the worksite.
Have a person act as a lookout for you. Follow the instructions of
signals and signs.
DO NOT operate the vehicle unless all hazard and instructional decals
are in place and readable. (Replace all missing, illegible, or damaged
decals.)
2. Clearances
Look out for and avoid other personnel, machinery and vehicles in the
area. Use a spotter if you do not have a clear view of conditions that
affect clearances. Travel with the boom fully retracted and lowered as
far as possible while still maintaining enough ground clearance for
conditions.
Always check boom clearances carefully before driving underneath
door openings, bridges, etc.
Always check for power lines when raising the boom. Beware of
overhead wires. Contact with electrical power lines can result in
electrocution. See “Electrocution Hazards” on page 15.
3. Visual Obstruction
Dust, smoke, fog, etc. can decrease vision and cause an accident.
Always stop or slow the vehicle until the obstruction clears and the
worksite is visible again. Have a lookout person assist you.
Where the load will obstruct the operator’s vision, it is recommended
that the vehicle be operated in REVERSE, looking backwards in the
direction of travel. Travel at a slower speed and get someone to direct
you.
14
Model 8042 Rev. 11/03
Safety Practices
4. Underground Hazards
Know the location of all underground hazards before operating this
vehicle in a new area or worksite. Electrical cables, gas and water
pipes, sewer, or other underground objects can cause death or serious
personal injury. Contact your local underground utility service or diggers
hotline to mark all underground hazards.
5. Electrocution Hazards
NEVER operate this vehicle in an area where overhead power lines,
overhead or underground cables, or other power sources may exist
without first requesting that the appropriate power or utility company deenergize the lines, or take other suitable precautions.
OS0063
Model 8042 Rev. 11/03
15
Safety Practices
6. Elevating Personnel
Use only a compliant work platform meeting the ASME B56.6 standards
for lifting and lowering personnel. NEVER transport personnel in a work
platform for even the shortest distance.
Death or serious personal injury can occur if these rules are not
obeyed. Riders can fall and be crushed or run over. Avoid accidents.
For other specific precautions, see “Elevating Personnel” on page 82.
WARNING
CRUSHING,
falling off
vehicle can
cause death
or serious
Allow no riders
AVOID
injury
OH3180
WARNING
FALLING OFF ATTACHMENT,
Lift or lower personnel
only in a compliant
work platform.
can result in death or
serious injury.
DO NOT TRAVEL
with personnel in
a work platform.
4110389
OU0620
16
Model 8042 Rev. 11/03
Safety Practices
7. Tip Over Hazard
DANGER
VEHICLE
TIPOVER
can result
in death or
serious injury.
DO NOT
travel
with the
boom
raised.
DO NOT raise
boom while
on a slope
unless load
is level.
Traveling with the boom raised is dangerous and can cause tipover.
Keep the boom as low as possible. Travel with extreme caution
the slowest
possible speed.
Keep the vehicle under control at all times. When negotiating turns,
slow down and turn the steering wheel in a smooth sweeping motion.
Avoid jerky turns, starts or stops. Reduce vehicle speed on rough
ground and slopes.
DO NOT exceed the rated lift capacity of the vehicle as structural
damage and unstable conditions will result.
To ensure that the vehicle is positioned in the most stable condition
before operating an attachment, use the frame sway control (frame tilt)
to level the vehicle. The vehicle is level when the frame level indicator
gauge reaches (0°) zero degrees.
MAINTAIN
proper tire
pressure at
all times.
and at
OS0086
If the vehicle cannot be leveled using the frame sway control, reposition
the vehicle.
Frame swaying left or right with the boom raised above horizontal is
dangerous. Always use the frame sway control to level the vehicle
before
raising the boom above horizontal, with or without a load. If the
vehicle cannot be leveled using frame sway control, reposition the
vehicle.
8. Emergency Exit Rear Window
The rear window (1) in the enclosed cab can be used as an emergency
exit by removing the latch pin (2) located on the window latch (3). The
window is then free to swing open.
2
3
Model 8042 Rev. 11/03
1.
2.
3.
4
109
7
91
1
OH1730
17
Safety Practices
9. Tire Pressure
DANGER
VEHICLE
TIPOVER
can result
in death or
serious injury.
DO NOT
travel
with the
boom
raised.
MAINTAIN proper tire pressures at all times. An underpressurized
tire(s) adversely affects vehicle stability. If proper tire pressures are not
maintained, this vehicle can tip over.
To ensure proper vehicle stability, check all four tire pressures before
operating the vehicle.
10.Do Not Jump
DANGER
AVOID CRUSHING
if vehicle tips.
Jumping can
result in death
or serious
DO NOT JUMP.
Brace yourself.
Stay in cab.
Keep seat belt on.
injury.
DO NOT raise
boom while
on a slope
unless load
is level.
OH3190
MAINTAIN
proper tire
pressure at
all times.
OS0085
If a vehicle ever becomes unstable and starts to tip over:
• BRACE YOURSELF and STAY WITH THE VEHICLE,
• KEEP YOUR SEAT BELT FASTENED,
• HOLD ON FIRMLY and
• LEAN AWAY FROM THE POINT OF IMPACT.
Indecision and trying to escape from a tipping vehicle can result in
death or serious personal injury.
18
Model 8042 Rev. 11/03
Safety Practices
11.Slopes
DO NOT park the vehicle on an incline and leave it unattended.
• Driving across a slope is dangerous, as unexpected changes in
the slope can cause tipover. Ascend or descend slopes slowly
and with caution
• Ascend or descend slopes with the heavy end of the vehicle
pointing up
NOTE: The rear of the vehicle is normally considered the heavy end unless
the carriage is fully loaded. In this case the front of the vehicle is now the
heavy end.
• Unloaded vehicles should be operated on all slopes with the
carriage pointing down
• On all slopes, the load must be tilted back and raised only as far
as necessary to clear the ground.
• When operating on a downhill slope, reduce travel speed and
downshift to a low gear to permit compression braking by the
engine and aid the application of the service brakes.
.
the slope.
the slope.
12.Falling Load Hazard
DO NOT exceed the total rated load capacity of the specific type fork
being used. Each fork is stamped with a maximum load capacity. If the
capacity is exceeded, forks may break. See “Fork Ratings” on page 81.
DO NOT downshift at a high ground speed. Sudden slowing can cause
the load to drop off the forks.
13.Ventilation
Sparks from the electrical system and the engine exhaust can cause an
explosion. DO NOT operate this vehicle in an area with flammable dust
or vapors unless good ventilation has removed the hazard.
Carbon monoxide fumes from the engine exhaust can cause suffocation
in an enclosed area. Good ventilation is very important when operating
this vehicle.
Model 8042 Rev. 11/03
19
Safety Practices
Equipment Considerations
WARNING: DO NOT modify or alter (weld, drill, etc.) any
part of this vehicle without first consulting JLG. Modifications can
weaken the structure creating a hazard that can cause death or
serious personal injury.
DO NOT by-pass or disconnect any electrical or hydraulic circuits.
Consult the JLG Service Department or your local Sky Trak Distributor
if any circuit is malfunctioning.
DO check for frayed or cut seat belt webbing, damaged buckles or loose
mounting brackets. Replace immediately if required.
ALWAYS wear a seat belt when operating the vehicle.
DO check tire pressure on all four tires. Add air if required.
DO check the condition of all four rims. Check for bent flanges and/or
bead mounting areas.
DO check the parking brake/transmission de-clutch operation. Refer to
the test procedures on page 173. Repair immediately if required.
DO keep all non-skid surfaces clean and free of debris. Replace if worn,
damaged or missing.
DO check the condition of decals. Replace decals if missing, damaged
or illegible. The following pages show the proper location of the decals.
20
Model 8042 Rev. 11/03
Safety Practices
3
7
2
WARNING
AVOID
CRUSHING,
falling off
vehicle can
cause death
or serious
injury
1. Read operator's manual
before operating.
2. Fasten seat belt.
3. Allow no riders.
4. Use a compliant
work platform to lift
or lower personnel.
Pressing down the accelerator pedal (8) increases engine and hydraulic
speed of the vehicle. The pedal is spring-loaded to return to idle speed.
NOTE: The accelerator pedal is also used to activate the Cummins ECM
Diagnostic system. With the ignition switch in the RUN position, depress
and release the pedal three times to activate the system.
Service Brake Pedal
Pressing down the brake pedal (9) decreases the speed of the vehicle by
applying the service brakes located in the axles. In the event of engine
power loss, the service brake pedal can also be used for braking. It also
activates and locks the rear axle to frame lock system when boom angles
are greater than 40°, as long as the pedal is depressed.
Steering Wheel
Turning the steering wheel (10) to the left or right steers the vehicle in the
corresponding direction. Any one of the steering modes are selectable.
Refer to “Steering Select Switch” on page 25.
Horn Button
Pressing the button (11) sounds the horn.
11
9
Model 8042 Rev. 11/03
10
8
MA8560
23
Operation
Ignition Switch
Using the ignition switch key (1), the switch may be turned clockwise from
the OFF (2) position to the RUN (3) and START (4) positions. The START
position is spring-loaded to return to the RUN position and must be
manually held in place for starting.
OFF position (2) — The entire electrical system is shut down.
RUN position (3) — All controls and indicators are operable.
START position (4) — Engages starter motor to crank the engine when the
parking brake switch is engaged and the transmission is in NEUTRAL.
2
3
4
1
24
OT0680
Model 8042 Rev. 11/03
Operation
Steering Select Switch
This vehicle has one steering select switch (5) with three positions. The
switch is located in the lower switch bank (6) on right side dash panel.
Refer to “Steering Modes” on page 65 for detailed information.
6
Model 8042 Rev. 11/03
5
OH3240
25
Operation
Park Brake Switch
The Parking Brake Switch (1) has two positions:
ENGAGED............ toggle switch downward
P
OS0121
P
DISENGAGED........... toggle switch upward
OS1323
The Parking Brake Switch (1) must be ENGAGED to permit engine starting.
A red LED, on the parking brake switch, and a light in the instrument cluster
will indicate the brake is ENGAGED.
The parking brake may be used to stop in an EMERGENCY situation.
However, use caution because the stop will be abrupt and the operator and
the load may be jolted forward unexpectedly.
With boom angles greater than 40°, this switch activates the locked mode of
the Stabil-TRAK system.
1
26
OH3240
Model 8042 Rev. 11/03
Operation
N D
Neutral Lock Lever
The Travel Select Lever (2) is equipped with a neutral lock. The Neutral Lock
Lever (3) locks the Travel Select Lever in NEUTRAL or unlocks the Travel
Select Lever so that it can be moved into the FORWARD or REVERSE drive
position.
3
2
OH3250
To lock the Travel Select Lever (2) in the NEUTRAL position, place the lever
in the NEUTRAL position and move the Neutral Lock Lever (3) to the (N)
NEUTRAL LOCK position.
To unlock, move the Neutral Lock Lever to the (D) DRIVE position.
N = NEUTRAL LOCK ...................all the way LEFT
OT0570
D = DRIVE................................... all the way RIGHT
OT0580
Model 8042 Rev. 11/03
27
Operation
Travel Select Lever
The Travel Select Lever (1) has three positions to select direction of travel:
F = FORWARD (2)..........all the way FORWARD
N = NEUTRAL (3)...........CENTER position
R = REVERSE (4) .......... all the way REARWARD
OS0340
2
3
4
1
OH3260
To change travel selections, move the lever FORWARD or REARWARD to
the desired selection.
When the Travel Select Lever is shifted to REVERSE, the back-up alarm will
automatically sound.
NOTE: The Travel Select Lever must be in the (N) NEUTRAL position to
permit engine starting and when boom angles are greater than 40°, shifting
into NEUTRAL activates the locked mode of the Stabil-TRAK system.
28
Model 8042 Rev. 11/03
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