Original Instructions - Keep this manual with the machine at all times.
Boom Lift Models
740AJ
prior to S/N 0300185827
3121295
March 31, 2014
FOREWORD
FOREWORD
This manual is a very important tool! Keep it with the machine at all times.
The purpose of this manual is to provide owners, users, operators, lessors, and lessees with the precautions and
operating procedures essential for the safe and proper machine operation for its intended purpose.
Due to continuous product improvements, JLG Industries, Inc. reserves the right to make specification changes
without prior notification. Contact JLG Industries, Inc. for updated information.
3121295– JLG Lift –a
FOREWORD
SAFETY ALERT SYMBOLS AND SAFETY SIGNAL WORDS
This is the Safety Alert Symbol. It is used to alert you to the potential personal
injury hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death
INDICATES AN IMMINENTLY HAZARDOUS SITUATION. IF NOT
AVOIDED, WILL RESULT IN SERIOUS INJURY OR DEATH. THIS DECAL
WILL HAVE A RED BACKGROUND.
INDICATES A POTENTIALLY HAZARDOUS SITUATION. IF NOT
AVOIDED, COULD
DECAL WILL HAVE AN ORANGE BACKGROUND.
RESULT IN SERIOUS INJURY OR DEATH. THIS
INDICATES A POTENTIALLY HAZARDOUS SITUATION. IF NOT
AVOIDED, MAY RESULT IN MINOR OR MODERATE INJURY. IT MAY
ALSO ALERT AGAINST UNSAFE PRACTICES. THIS DECAL WILL HAVE A
YELLOW BACKGROUND.
INDICATES INFORMATION OR A COMPANY POLICY THAT RELATES
DIRECTLY OR INDIRECTLY TO THE SAFETY OF PERSONNEL OR PROTECTION OF PROPERTY.
b– JLG Lift –3121295
THIS PRODUCT MUST COMPLY WITH ALL SAFETY RELATED BULLETINS. CONTACT JLG INDUSTRIES, INC. OR THE LOCAL AUTHORIZED
JLG REPRESENTATIVE FOR INFORMATION REGARDING SAFETYRELATED BULLETINS WHICH MAY HAVE BEEN ISSUED FOR THIS
PRODUCT.
For:
• Accident Reporting
• Product Safety Publications
• Current Owner Updates
• Questions Regarding
Product Safety
FOREWORD
• Standards and Regulations
Compliance Information
JLG INDUSTRIES, INC. SENDS SAFETY RELATED BULLETINS TO THE
OWNER OF RECORD OF THIS MACHINE. CONTACT JLG INDUSTRIES,
INC. TO ENSURE THAT THE CURRENT OWNER RECORDS ARE
UPDATED AND ACCURATE.
JLG INDUSTRIES, INC. MUST BE NOTIFIED IMMEDIATELY IN ALL
INSTANCES WHERE JLG PRODUCTS HAVE BEEN INVOLVED IN AN
ACCIDENT INVOLVING BODILY INJURY OR DEATH OF PERSONNEL OR
WHEN SUBSTANTIAL DAMAGE HAS OCCURRED TO PERSONAL PROPERTY OR THE JLG PRODUCT.
Contact:
Product Safety and Reliability Department
JLG Industries, Inc.
13224 Fountainhead Plaza
Hagerstown, MD 21742
USA
or Your Local JLG Office
(See addresses on inside of manual cover)
This section outlines the necessary precautions for proper
and safe machine operation and maintenance. For proper
machine use, it is mandatory that a daily routine is established based on the content of this manual. A maintenance
program, using the information provided in this manual and
the Service and Maintenance Manual, must also be established by a qualified person and followed to ensure the
machine is safe to operate.
The owner/user/operator/lessor/lessee of the machine
should not operate the machine until this manual has been
read, training is accomplished, and operation of the machine
has been completed under the supervision of an experienced and qualified operator.
If there are any questions with regard to safety, training,
inspection, maintenance, application, and operation, please
contact JLG Industries, Inc. (“JLG”).
FAILURE TO COMPLY WITH THE SAFETY PRECAUTIONS LISTED IN
THIS MANUAL COULD RESULT IN MACHINE DAMAGE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
1.2PRE-OPERATION
Operator Training and Knowledge
• Read and understand this manual before operating the
machine.
• Do not operate this machine until complete training is performed by authorized persons.
• Only authorized and qualified personnel can operate the
machine.
3121295– JLG Lift –1-1
SECTION 1 - SAFETY PRECAUTIONS
• Read, understand, and obey all DANGERS, WARNINGS,
CAUTIONS, and operating instructions on the machine
and in this manual.
• Use the machine in a manner which is within the scope of
its intended application set by JLG.
• All operating personnel must be familiar with the emergency controls and emergency operation of the machine
as specified in this manual.
• Read, understand, and obey all applicable employer,
local, and governmental regulations as they pertain to
operation of the machine.
Workplace Inspection
• The operator is to take safety measures to avoid all hazards in the work area prior to machine operation.
• Do not operate or raise the platform while on trucks, trailers, railway cars, floating vessels, scaffolds or other equipment unless approved in writing by JLG.
• Do not operate the machine in hazardous environments
unless approved for that purpose by JLG.
• Be sure that the ground conditions are able to support the
maximum load shown on the decals located on the
machine.
Machine Inspection
• Before machine operation, perform inspections and functional checks. Refer to Section 2 of this manual for
detailed instructions.
• Do not operate this machine until it has been serviced and
maintained according to requirements specified in the
Service and Maintenance Manual.
• Be sure the footswitch and all other safety devices are
operating properly. Modification of these devices is a
safety violation.
MODIFICATION OR ALTERATION OF AN AERIAL WORK PLATFORM
SHALL BE MADE ONLY WITH WRITTEN PERMISSION FROM THE MANUFACTURER
• Do not operate any machine on which safety or instruction
placards or decals are missing or illegible.
• Avoid any buildup of debris on the platform floor. Keep
mud, oil, grease, and other slippery substances from footwear and platform floor.
1-2– JLG Lift –3121295
SECTION 1 - SAFETY PRECAUTIONS
1.3OPERATION
General
• Do not use the machine for any purpose other than positioning personnel, their tools, and equipment.
• Never operate a machine that is not working properly. If a
malfunctions occurs, shut down the machine.
• Never slam a control switch or lever through neutral to an
opposite direction. Always return switch to neutral and
stop before moving the switch to the next function. Operate controls with slow and even pressure.
• Hydraulic cylinders should never be left fully extended or
fully retracted before shutdown or for long periods of time.
• Do not allow personnel to tamper with or operate the
machine from the ground with personnel in the platform,
except in an emergency.
• Do not carry materials directly on platform railing. Contact
JLG for approved material handling accessories.
• When two or more persons are in the platform, the operator shall be responsible for all machine operations.
• Always ensure that power tools are properly stowed and
never left hanging by their cord from the platform work
area.
• Supplies or tools which extend outside the platform are
prohibited unless approved by JLG.
• When driving, always position boom over rear axle in line
with the direction of travel. Remember, if boom is over the
front axle, steer and drive functions will be reversed.
• Do not assist a stuck or disabled machine by pushing,
pulling, or by using boom functions. Only pull the unit
from the tie-down lugs on the chassis.
• Do not place boom or platform against any structure to
steady the platform or to support the structure.
• Stow boom and shut off all power before leaving machine.
Trip and Fall Hazards
During operation, occupants in the platform must wear a full
body harness with a lanyard attached to an authorized lanyard anchorage point. Attach only one (1) lanyard per lanyard anchorage point.
3121295– JLG Lift –1-3
SECTION 1 - SAFETY PRECAUTIONS
• Before operating the machine, make sure all gates are
closed and fastened in their proper position.
• Keep both feet firmly positioned on the platform floor at all
times. Never use ladders, boxes, steps, planks, or similar
items on platform to provide additional reach.
• Never use the boom assembly to enter or leave the platform.
• Use extreme caution when entering or leaving platform.
Be sure that the boom is fully lowered. Refer to Section
2.5 for additional information on the proper use of the Fall
Arrest System. It may be necessary to telescope out to
position the platform closer to the ground for entry/exit.
Face the machine, maintain “three point contact” with the
machine, using two hands and one foot or two feet and
one hand during entry and exit.
Electrocution Hazards
• This machine is not insulated and does not provide protection from contact or proximity to electrical current.
1-4– JLG Lift –3121295
SECTION 1 - SAFETY PRECAUTIONS
Table 1-1. Minimum Approach Distances (M.A.D.)
• Maintain distance from electrical lines, apparatus, or any
energized (exposed or insulated) parts according to the
Minimum Approach Distance (MAD) as shown in Table 1-
1.
• Allow for machine movement and electrical line swaying.
Voltage Range
(Phase to Phase)
0 to 50 KV10 (3)
Over 50KV to 200 KV15 (5)
Over 200 KV to 350 KV20 (6)
Over 350 KV to 500 KV25 (8)
Over 500 KV to 750 KV35 (11)
Over 750 KV to 1000 KV45 (14)
NOTE: This requirement shall apply except where
employer, local or governmental regulations
are more stringent.
• Maintain a clearance of at least 10 ft. (3m) between any part
of the machine and its occupants, their tools, and their
equipment from any electrical line or apparatus carrying up
to 50,000 volts. One foot additional clearance is required for
every additional 30,000 volts or less.
MINIMUM APPROACH DISTANCE
in Feet (Meters)
3121295– JLG Lift –1-5
SECTION 1 - SAFETY PRECAUTIONS
• The minimum approach distance may be reduced if insulating barriers are installed to prevent contact, and the barriers
are rated for the voltage of the line being guarded. These
barriers shall not be part of (or attached to) the machine. The
minimum approach distance shall be reduced to a distance
within the designed working dimensions of the insulating
barrier. This determination shall be made by a qualified person in accordance with the employer, local, or governmental
requirements for work practices near energized equipment
DO NOT MANEUVER MACHINE OR PERSONNEL INSIDE PROHIBITED
ZONE (MAD). ASSUME ALL ELECTRICAL PARTS AND WIRING ARE
ENERGIZED UNLESS KNOWN OTHERWISE.
Tipping Hazards
• The user should be familiar with the surface before driving. Do not exceed the allowable sideslope and grade
while driving.
1-6– JLG Lift –3121295
SECTION 1 - SAFETY PRECAUTIONS
• Do not elevate platform or drive with platform elevated
while on a sloping, uneven, or soft surface.
• Before driving on floors, bridges, trucks, and other surfaces, check allowable capacity of the surfaces.
• Never exceed the maximum platform capacity. Distribute
loads evenly on platform floor.
• Do not raise the platform or drive from an elevated position unless the machine is on firm, level and smooth surfaces.
• Keep the chassis of the machine at least 2 ft. (0.6m) from
holes, bumps, drop-offs, obstructions, debris, concealed
holes, and other potential hazards on the floor/surface.
• Do not push or pull any object with the boom.
• Never attempt to use the machine as a crane. Do not tieoff machine to any adjacent structure.
• Do not operate the machine when wind conditions exceed
28 mph (12.5 m/s). Refer to Table 1-2, Beaufort Scale (For
Reference Only).
• Do not increase the surface area of the platform or the
load. Increase of the area exposed to the wind will
decrease stability.
• Do not increase the platform size with unauthorized deck
extensions or attachments.
• If boom assembly or platform is in a position that one or
more wheels are off the ground, all persons must be
removed before attempting to stabilize the machine. Use
cranes, forklift trucks, or other appropriate equipment to
stabilize machine.
Crushing and Collision Hazards
• Approved head gear must be worn by all operating and
ground personnel.
• Check work area for clearances overhead, on sides, and
bottom of platform when lifting or lowering platform, and
driving.
• During operation, keep all body parts inside platform railing.
3121295– JLG Lift –1-7
SECTION 1 - SAFETY PRECAUTIONS
• Use the boom functions, not the drive function, to position
the platform close to obstacles.
• Always post a lookout when driving in areas where vision
is obstructed.
• Keep non-operating personnel at least 6 ft. (1.8m) away
from machine during all driving and swing operations.
• Limit travel speed according to conditions of ground surface, congestion, visibility, slope, location of personnel,
and other factors which may cause collision or injury to
personnel.
• Be aware of stopping distances in all drive speeds. When
driving in high speed, switch to low speed before stopping. Travel grades in low speed only.
• Do not use high speed drive in restricted or close quarters
or when driving in reverse.
• Exercise extreme caution at all times to prevent obstacles
from striking or interfering with operating controls and persons in the platform.
• Be sure that operators of other overhead and floor level
machines are aware of the aerial work platform’s presence. Disconnect power to overhead cranes.
• Warn personnel not to work, stand, or walk under a raised
boom or platform. Position barricades on floor if necessary.
1.4TOWING, LIFTING, AND HAULING
• Never allow personnel in platform while towing, lifting, or
hauling.
• This machine should not be towed, except in the event of
emergency, malfunction, power failure, or loading/unloading. Refer to the Emergency Procedures section of this
manual for emergency towing procedures.
• Ensure boom is in the stowed position and the turntable
locked prior to towing, lifting or hauling. The platform must
be completely empty of tools.
• When lifting machine, lift only at designated areas of the
machine. Lift the unit with equipment of adequate capacity.
• Refer to the Machine Operation section of this manual for
lifting information.
1-8– JLG Lift –3121295
SECTION 1 - SAFETY PRECAUTIONS
1.5ADDITIONAL HAZARDS / SAFETY
• Do not use machine as a ground for welding.
• When performing welding or metal cutting operations,
precautions must be taken to protect the chassis from
direct exposure to weld and metal cutting spatter.
• Do not refuel the machine with the engine running.
• Battery fluid is highly corrosive. Avoid contact with skin
and clothing at all times.
• Charge batteries only in a well ventilated area.
3121295– JLG Lift –1-9
SECTION 1 - SAFETY PRECAUTIONS
DO NOT OPERATE THE MACHINE WHEN WIND CONDITIONS EXCEED 28
MPH (12.5 M/S).
Table 1-2. Beaufort Scale (For Reference Only)
Beaufort
Number
000-0.2CalmCalm. Smoke rises vertically.
11-30.3-1.5Light airWind motion visible in smoke.
24-71.6-3.3Light breezeWind felt on exposed skin. Leaves r ustle.
38-123.4-5.4Gentle breezeLeaves and smaller twigs in constant motion.
413-185.5-7.9Moderate breezeDust and loose paper raised. Small branches begin to move.
519-248.0-10.7Fresh breezeSmaller trees sway.
625-3110.8-13.8 Strong breezeLarge branches in motion. Whistling heard in overhead wires.
732-3813.9-17.1 Near Gale/Moderate Gale Whole trees in motion. Effor t needed to walk against the wind.
839-4617.2-20.7 Fresh GaleTwigs broken from trees. Cars veer on road.
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
SECTION 2. USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
2.1 PERSONNEL TRAINING
The aerial platform is a personnel handling device; so it is
necessary that it be operated and maintained only by trained
personnel.
Persons under the influence of drugs or alcohol or who are
subject to seizures, dizziness or loss of physical control must
not operate this machine.
Operator Training
Operator training must cover:
1. Use and limitations of the controls in the platform and at
the ground, emergency controls and safety systems.
2. Control labels, instructions, and warnings on the
machine.
3. Rules of the employer and government regulations.
4. Use of approved fall protection device.
5. Enough knowledge of the mechanical operation of the
machine to recognize a malfunction or potential malfunction.
6. The safest means to operate the machine where overhead obstructions, other moving equipment, and obstacles, depressions, holes, drop-offs.
7. Means to avoid the hazards of unprotected electrical
conductors.
8. Specific job requirements or machine application.
Training Supervision
Training must be done under the supervision of a qualified
person in an open area free of obstructions until the trainee
has developed the ability to safely control and operate the
machine.
Operator Responsibility
The operator must be instructed that he/she has the responsibility and authority to shut down the machine in case of a
malfunction or other unsafe condition of either the machine
or the job site.
3121295– JLG Lift –2-1
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
2.2PREPARATION, INSPECTION, AND
MAINTENANCE
The following table covers the periodic machine inspections
and maintenance required by JLG Industries, Inc. Consult
local regulations for further requirements for aerial work platforms. The frequency of inspections and maintenance must
be increased as necessary when the machine is used in a
harsh or hostile environment, if the machine is used with
increased frequency, or if the machine is used in a severe
manner.
JLG INDUSTRIES, INC. RECOGNIZES A FACTORY-QUALIFIED SERVICE
TECHNICIAN AS A PERSON WHO HAS SUCCESSFULLY COMPLETED
THE JLG SERVICE TRAINING SCHOOL FOR THE SPECIFIC JLG PRODUCT
MODEL.
2-2– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Table 2-1. Inspection and Maintenance Table
TypeFrequency
Pre-Start InspectionBefore using each day; or
whenever there’s an Operator change.
Pre-Delivery Inspection (See
Note)
Frequent Inspection
(See Note)
Annual Machine Inspection
(See Note)
Preventative MaintenanceAt intervals as specified in the Service and Main-
NOTE: Inspection forms are available from JLG. Use the Service and Maintenance Manual to perform inspections.
Before each sale, lease, or rental delivery.Owner, Dealer, or User Qualified JLG
In service for 3 months or 150 hours, whichever
comes first;
o r
Out of service for a period of more than 3 months;
o r
Purchased used.
Annually, no later than 13 months from the date of
prior inspection.
tenance Manual.
Primary
Responsibility
User or OperatorUser or OperatorOperator and Safety Manual
Owner, Dealer, or UserQualified JLG
Owner, Dealer, or UserFactory Trained
Owner, Dealer, or UserQualified JLG
Service
Qualification
Mechanic
Mechanic
Service Technician
(Recommended)
Mechanic
Service and Maintenance
Manual and applicable JLG
inspection form
Service and Maintenance
Manual and applicable JLG
inspection form
Service and Maintenance
Manual and applicable JLG
inspection form
Service and Maintenance
Manual
Reference
3121295– JLG Lift –2-3
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Parent Metal CrackWeld Crack
Pre-Start Inspection
The Pre-Start Inspection should include each of the following:
1. Cleanliness – Check all surfaces for leakage (oil, fuel,
or battery fluid) or foreign objects. Report any leakage to
the proper maintenance personnel.
2. Structure - Inspect the machine structure for dents,
damage, weld or parent metal cracks or other discrepancies.
3. Decals and Placards – Check all for cleanliness and
legibility. Make sure none of the decals and placards are
missing. Make sure all illegible decals and placards are
cleaned or replaced.
4. Operators and Safety Manuals – Make sure a copy of
the Operator and Safety Manual, EMI Safety Manual
(Domestic only), and ANSI Manual of Responsibilities
(Domestic only) is enclosed in the weather resistant
storage container.
7. Fuel (Combustion Engine Powered Machines) – Add the
proper fuel as necessary.
8. Engine Oil Supply - Ensure the engine oil level is at the
Full mark on the dipstick and the filler cap is secure.
9. Hydraulic Oil – Check the hydraulic oil level. Ensure
hydraulic oil is added as required.
10. Function Check - Once the "Walk-Around" Inspection is
complete, perform a functional check of all systems in
accordance with Section 2.3 in an area free of overhead
and ground level obstructions. Refer to Sections 3 and 4
for more specific machine operating instructions.If the
machine does not operate properly, turn off the machine
immediately! Report the problem to the proper maintenance personnel. Do not operate the machine until it is
declared safe for operation.
2-4– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
1. Ar ticulating Jib
2 . M ai n Bo om A ss em bl y
3 . M ai n F l y B o om
4 . M a i n B a se B oo m
5 . U p r ig h t
6 . T ow e r L i f t C y li n d er
7 . G r o un d Co n tr o l Bo x
8 . F r am e
9 . S w i ng B ea r in g
10. Tower Boom
11. Upright Level Cylinder
1 2. M a in L if t C yl i nd e r
13. Master Cylinder
14. Jib Lift Cylinder
15. Footswitch
16. Platform
17. Platform Control Box
18. Rotator
Figure 2-1. Machine Nomenclature
3121295– JLG Lift –2-5
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
21
1
2
3,4,5
6
7
8
9,10
11
12
13
14,15,16,17,18,19,20
2,22,23,24,25,26
27
10
11
12
9
28
8
8
30
8
8
9
29
43
12
1110
26,31,32,33,34
35,36
37
38,39
40
12
11
9,10
8
41
42
Figure 2-2. Daily Walk-Around Inspection. (Sheet 1 of 4)
2-6– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
GENERAL
Begin the "Walk-Around Inspection" at Item 1, as noted on
the diagram. Continue to the right (counterclockwise
viewed from top) checking each item in sequence for the
conditions listed in the following checklist.
TO AVOID POSSIBLE INJURY, BE SURE MACHINE POWER IS OFF.
DO NOT OPERATE MACHINE UNTIL ALL MALFUNCTIONS HAVE BEEN
CORRECTED.
INSPECTION NOTE: On all components, make sure there
are no loose or missing parts, that they are securely fastened, and no visible damage, leaks or excessive wear
exists in addition to any other criteria mentioned.
1. Platform Assemblyand Gate - Lockbolts in place.
Footswitch works properly, not modified, disabled or
blocked. Latch, stop, and hinges in working condition.
2. Platform & Ground Control Consoles - Switches and
levers return to neutral, decals/placards secure and
legible, control markings legible.
3. Rotator - See Inspection Note.
4. Rotator Motion Control Valve - See Inspection Note.
5. Articulating Jib Boom - See Inspection Note.
6. Dual Capacity Limit Switch (if equipped) - See
Inspection Note; arm free to move, and free from dirt
and grease.
7. Power Track - See Inspection Note.
8. All Hydraulic Cylinders - No visible damage; pivot
pins and hydraulic hoses undamaged, not leaking.
9. Spindle - See Inspection Note. (4 Wheel Steer if
equipped)
10. Drive Motor and Brake - See Inspection Note.
11. Drive Hub - See Inspection Note.
12. Wheel/Tire Assembly - Properly secured, no missing
lug nuts, proper inflation (pneumatic).
13. Steering Linkage - See Inspection Note. (4 Wheel
Steer if equipped)
Figure 2-3. Daily Walk-Around Inspection. (Sheet 2 of 4)
3121295– JLG Lift –2-7
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
14. Turntable Lock - See Inspection Note.
15. Auxiliary Power Pump - See Inspection Note.
16. Control Valve (Tank Compartment) - See Inspection
Note.
17. Turntable Bearing and Pinion - See Inspection Note.
18. Hydraulic Oil Medium Pressure Filter Housing -
Housing Secure; no visible damage or leakage.
19. Hydraulic Oil Return Filter Housing - Housing
secure; no visible damage; no evidence of leakage.
20. Manual Descent - See Inspection Note. (if equipped)
21. LP Gas Tank - Brackets, hose and fittings secure; no
visible damage, no missing parts. (If Equipped)
22. Hydraulic Oil Supply - Recommended oil level sight
gauge. (Check level with cold oil, systems shut down,
machine with booms retracted and lowered) Cap in
place and secure.
23. Hydraulic Oil Breather - Element in place, not
clogged, no sign of overflow.
24. Fuel Supply - Fuel filler cap secure. Tank - See
Inspection Note.
25. Swing Drive Motor and Brake - See Inspection Note.
26. Door and Latches, Right Side - Hood door and
latches in working condition, See Inspection Note.
27. Oscillating Cam Valve - See Inspection Note. (If
Equipped)
28. Tie Rod and Steering Linkage, - See Inspection
Note.
29. Dual Capacity and Horizontal Cutout Limit
Switches if equipped - Properly secured, no damage
to the switches, arm free to move, and free from dirt
and grease.
30. Oscillating Axle - See Inspection Note. (If Equipped)
Figure 2-4. Daily Walk-Around Inspection. (Sheet 3 of 4)
2-8– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
31. Engine Air Filter - No loose or missing parts; no visible damage; element clean.
32. Battery - Proper electrolyte levels; cables tight, no visible damage or corrosion.
33. Engine Oil Supply - Full mark on dipstick; filler cap
secure.
34. Muffler and Exhaust System - See Inspection Note.
35. Hydraulic Pumps - See Inspection Note.
36. Engine Tray Pivot - See Inspection Note.
37. Hydraulic Swivel - See Inspection Note.
38. LP Gas Tank - Brackets, hose and fittings secure; no
visible damage, no missing parts. (If Equipped)
39. Flow Valves - See Inspection Note.
40. Tower Boom - No visible damage; wear pads secure.
All cylinders - rod end shafts and barrel-end shafts
properly secured. If Tower Boom does not rest on stop
with machine in the stowed position, this indicates
upright weldment is out of alignment. If out of alignment, do not use machine until the upright weldment
has been synchronized in accordance with Section
4.16.
41. Frame - See Inspection Note. (top and underside).
42. Main Boom Sections - No visible damage; wear pads
secure. All cylinders - rod end shafts and barrel-end
shafts properly secured.
43. Upright - In vertical position, relative to the chassis. If
out of alignment, do not use machine until the upright
has been synchronized in accordance with Section
4.16. Refer to Figure 2-6. and Figure 2-7.
Figure 2-5. Daily Walk-Around Inspection. (Sheet 4 of 4)
3121295– JLG Lift –2-9
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
2.3FUNCTION CHECK
Perform a function check of all systems, once the walkaround inspection is complete, in an area free of overhead
and ground level obstructions.
A MACHINE MALFUNCTION COULD CAUSE DEATH OR SERIOUS INJURY.
IF ANY MALFUNCTIONS OCCUR DURING THE FUNCTION TEST, DISCONTINUE OPERATION AND CONTACT A QUALIFIED SERVICE TECHNICIAN
TO CORRECT THE MALFUNCTION BEFORE OPERATING THE MACHINE.
From the Ground Control Station with No Load in
the Platform:
1. Check that all guards protecting the function switches or
locks are in place. Ensure that all function controls and
switches return to the "off" or neutral position when
released.
DO NOT OPERATE IF GUARDS OR LOCKS ARE MISSING OR THE
SWITCHES DO NOT RETURN TO THE "OFF" OR NEUTRAL POSITION
2. Raise the tower base boom to approximately 40
degrees, then lower the tower boom back to the below
horizontal position. While raising and lowering the tower
boom assembly, observe the position of the upright.
Ensure that the upright remains vertical relative to the
chassis. Refer to Figure 2-6. and Figure 2-7.
3. Check that all machine functions are disabled when the
Emergency Stop Button is pushed in.
4. Check for proper operation of the auxiliary power and
manual descent system (if equipped). Operate each
function control to ensure proper operation.
2-10– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
90°
90°
Figure 2-6. Boom Upright Positioning - Correct
UPRIGHT MUST BE 90° (VERTICAL) RELATIVE
TO THE CHASSIS.
CORRECT
CORRECT
3121295– JLG Lift –2-11
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
90°
90°
Figure 2-7. Boom Upright Positioning - Incorrect
TO AVOID TIPPING IF THIS OCCURS:
-LOWER PLATFORM TO GROUND USING MAIN
BOOM LIFT AND TELESCOPE FUNCTIONS. HAVE
CONDITION CORRECTED BY A CERTIFIED JLG
SERVICE TECHNICIAN BEFORE CONTINUING
USE OF MACHINE.
INCORRECT
INCORRECT
2-12– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
From the Platform Control Station:
1. Check that the control console is secure and all guards
protecting the function switches or locks are in place.
Ensure that all function controls and switches return to
the "off" or neutral position when released.
DO NOT OPERATE MACHINE IF GUARDS OR LOCKS ARE MISSING OR
THE SWITCHES DO NOT RETURN TO THE "OFF" OR NEUTRAL POSITION
2. Check the footswitch adjustment and operation as follows:
a. With engine power shut down, attempt to start
engine. Engine should not attempt to start when
footswitch is activated.
b. Start engine. Activate hydraulic system by depress-
ing footswitch. Activate a boom function. Continue
to activate the function and remove foot from footswitch. The motion should stop.
DISCONTINUE OPERATION IF THE FOOTSWITCH DOES NOT OPERATE
PROPERLY.
c. Check adjustment of footswitch. Footswitch must
be adjusted so that functions will operate when
pedal is approximately at its center of travel. If the
footswitch operates within last 1/4" of travel, top or
bottom, it should be adjusted.
NOTE: Footswitch has a 7 second delay timer. If a function is not
activated within 7 seconds after depressing the footswitch, reset the footswitch.
3. Ensure that all machine functions are disabled when the
Emergency Stop Button is activated.
4. Check auxiliary power for proper operation. Operate
each function control switch to ensure proper operation
of the auxiliary power system.
3121295– JLG Lift –2-13
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
5. Drive forward and reverse; check for proper operation.
6. Steer left and right; check for proper operation.
7. Check the high-engine cutout for the tower boom
assembly as follows:
a. Place machine on level surface with booms
retracted and lowered.
b. From the platform control, position DRIVE SPEED/
TORQUE SELECT switch to FAST (Forward Position).
c. Using extreme caution, partially position the DRIVE
control to FORWARD just enough to obtain high
engine but not enough to cause the machine to
move.
d. Raise the TOWER BASE BOOM until the engine
speed shifts from high speed to mid speed. The
bottom of the upright should NOT be above the
hood level of the machine.
8. Check the high-engine cutout for the main boom assembly as follows:
a. Place machine on level surface with booms
retracted and lowered.
b. From the platform control, position DRIVE SPEED/
TORQUE SELECT switch to FAST (Forward Position).
c. Raise the main boom above horizontal.
d. Using extreme caution, partially position the DRIVE
control to FORWARD just enough to cause the
machine to move. The drive speed should be in
slow or creep mode.
9. Swing turntable to LEFT and RIGHT a minimum of 45
degrees. Check for smooth motion.
NOTE: Ensure the turntable lock is disengaged. To disengage
lock, pull snap pin from lock pin, lift lock pin up to unlock
turntable. Return snap pin to lock pin to hold lock pin in
the disengaged position. Reverse procedure to engage
turntable lock.
2-14– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
10. Check the Tilt Alarm and Warning System as follows:
IF THE TILT ALARM AND WARNING SYSTEM DOES NOT OPERATE
PROPERLY, DISCONTINUE OPERATION. CONTACT A QUALIFIED SERVICE TECHNICIAN TO CORRECT THE MALFUNCTION BEFORE OPERATING THE MACHINE.
For Machines prior to serial number 0300062045 Have an assistant manually activate the tilt indicator light
by compressing any one of the three tilt indicator mounting springs. The tilt indicator light on the platform control
console should illuminate.
For Machines from serial number 0300062045 to
present - With the platform in the transport position
(tower base boom lowered, main fly boom retracted,
and main base boom below horizontal) drive up a suitable ramp of at least 5° slope. The tilt indicator light on
the platform control console should illuminate.
11. Check that the platform automatically levels properly
during raising and lowering of the boom.
12. Check that the platform level override operates properly.
13. Check platform rotator for smooth operation and assure
platform will rotate 90 degrees in both directions from
centerline of boom.
14. If equipped with 4-wheel steer, check rear steer left and
right for proper operation.
15. If equipped, raise and lower the articulating jib boom.
Check for smooth operation.
16. If equipped with Auxiliary Power, operate each function
control switch to assure that they function in both directions using auxiliary power instead of engine power.
17. Ground Controls - Place GROUND/PLATFORM SELECT
switch to GROUND. Start engine. Platform controls
should not operate.
3121295– JLG Lift –2-15
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
2.4OSCILLATING AXLE LOCKOUT TEST (IF
EQUIPPED)
LOCKOUT SYSTEM TEST MUST BE PERFORMED QUARTERLY, ANY TIME
A SYSTEM COMPONENT IS REPLACED, OR WHEN IMPROPER SYSTEM
OPERATION IS SUSPECTED.
NOTE: Ensure boom is fully retracted, lowered, and centered
between drive wheels prior to beginning lockout cylinder
test.
1. Place a 6 inch (15.2 cm) high block with ascension ramp
in front of left front wheel.
2. From platform control station, start engine.
3. Position DRIVE SPEED/TORQUE SELECT SWITCH to
SLOW.
4. Place DRIVE control lever to FORWARD position and
carefully drive machine up ascension ramp until left front
wheel is on top of block.
5. Carefully activate SWING control lever and position
boom over RIGHT side of machine.
6. With boom over right side of machine, place DRIVE control lever to REVERSE and drive machine off of block
and ramp.
7. Have an assistant check to see that left front or right rear
wheel remains elevated in position off of ground.
8. Carefully activate SWING control lever and return boom
to stowed position (centered between drive wheels).
When boom reaches center, stowed position, lockout
cylinders should release and allow wheel to rest on
ground, it may be necessary to activate DRIVE to
release cylinders.
9. Place the 6 inch (15.2 cm) high block with ascension
ramp in front of right front wheel.
10. Place DRIVE control lever to FORWARD and carefully
drive machine up ascension ramp until right front wheel
is on top of block.
11. Carefully activate SWING control lever and position
boom over left side of machine.
12. With boom over left side of machine, place DRIVE control lever to REVERSE and drive machine off of block
and ramp.
13. Have an assistant check to see that right front or left rear
wheel remains elevated in position off of ground.
2-16– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
14. Carefully activate SWING control lever and return boom
to stowed position (centered between drive wheels).
When boom reaches center, stowed position, lockout
cylinders should release and allow wheel to rest on
ground, it may be necessary to activate DRIVE to
release cylinders.
15. If lockout cylinders do not function properly, have qualified personnel correct the malfunction prior to any further operation.
2.5INSPECTION AND USE OF FALL ARREST
SYSTEM
The external fall arrest system is designed to provide a lanyard
attach point while allowing the operator to access areas outside
the platform. Exit/Enter the platform through the gate area only.
The system is designed for use by one person.
Personnel must use fall protection at all times. A full body
harness and shock absorbing lanyard, not to exceed 6 feet
(1.8 m) in length, is required when using the external fall
arrest system.
DO NOT OPERATE ANY MACHINE FUNCTIONS WHILE OUTSIDE OF
PLATFORM. BE CAREFUL WHEN ENTERING/EXITING THE PLATFORM
AT ELEVATION.
THE EXTERNAL FALL ARREST SYSTEM REQUIRES AN ANNUAL INSPECTION AND CERTIFICATION. THE ANNUAL INSPECTION AND CERTIFICATION MUST BE PERFORMED BY A COMPETENT PERSON.
If inspection services are required, contact:
Latchways plc
Hopton Park
Devises
Wiltshire
SN10 2JP
United Kingdom
Tel: +44 (0)1380 732700
Fax: +44 (0)1380 732701
e-mail: info@latchways.com
Prior to accessing areas outside of the fall arrest platform, the
user(s) must complete an appropriate job plan/risk assessment
for the work to be accomplished and the environment at hand. It
is the user’s responsibility to completely and adequately complete the job plan/risk assessment - special consideration must
3121295– JLG Lift –2-17
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
be given to the arresting distance of the deployed shock
absorbing lanyard compared to the proximity of lower levels, or
the ground, in the event of a fall.
IF THE FALL ARREST SYSTEM IS USED TO ARREST A FALL OR IS OTHERWISE DAMAGED, THE ENTIRE SYSTEM MUST BE REPLACED AND
THE PLATFORM FULLY INSPECTED. REFER TO THE SERVICE MANUAL.
Prior to Use Inspection
Fall arrest systems must be inspected prior to each use.
Replace if there are any signs of wear or damage to any of the
components.
Prior to use inspection should include a visual inspection of
the following items:
Cable: Proper tension, broken strands, corrosion.
Fittings: Loose fittings and fractures, damage to
hanger
Transfastener: Damage, free and proper sliding
Attaching Hardware: Loose, missing, properly
tightened
Inspecting Cable Tension and Slip Indicator
Cable tension is adjusted by using the Line Tenser. The Line
Tenser is the disc at the end of the cable (shown below).
When proper tension is achieved, the disc will spin by hand.
When less than proper tension is present the disc will not
turn by hand. The cable will stretch normally over time. In
order to tension the cable the turnbuckle can be tightened.
Rotate the turnbuckle until the proper tension is achieved.
2-18– JLG Lift –3121295
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
The slip indicator is the short tube crimped beside the end
connection of the cable. If the cable slips from the end connection a gap will be present between the slip indicator and
the end connection. No gap is acceptable. A cable that has
slipped must be taken out of service immediately and the
system replaced.
Shown below is the slip indicator as it should appear.
Shown below is the slip indicator with a gap, signifying that
the fall arrest system should be replaced immediately.
3121295– JLG Lift –2-19
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Figure 2-8. Fall Arrest System
1. Transfastener
2. Bracket
3. Cable
4. Swage/Slip Indicator
5. Turnbuckle
6. Line Tenser
2-20– JLG Lift –3121295
SECTION 3 - MACHINE CONTROLS AND INDICATORS
SECTION 3. MACHINE CONTROLS AND INDICATORS
3.1GENERAL
THE MANUFACTURER HAS NO DIRECT CONTROL OVER MACHINE
APPLICATION AND OPERATION. THE USER AND OPERATOR ARE
RESPONSIBLE FOR CONFORMING WITH GOOD SAFETY PRACTICES.
This section provides the necessary information needed to
understand control functions.
3.2CONTROLS AND INDICATORS
NOTE: This machine is equipped with control panels that use
symbols to indicate control functions. Refer to the decal
located on the control box guard in front of the control
box or by the ground controls for these symbols and the
corresponding functions.
Ground Control Station
NOTE: Main Lift, Swing, Platform Level, Main Telescope, Platform
Rotator and Auxiliary Power, Tower Lift, and jib control
switches are spring-loaded and will automatically return
to neutral (off) when released.
NOTE: If equipped, the Function Enable switch must
be held down in order to operate Main Boom
Telescope, Tower Lift, Swing, Main Lift, Jib
Lift, Platform Level Override, and Platform Rotate functions.
1. Platform Rotate
The platform ROTATE control switch provides rotation of
the platform when positioned to LEFT or RIGHT.
3121295– JLG Lift –3-1
SECTION 3 - MACHINE CONTROLS AND INDICATORS
Figure 3-1. Ground Control Station
1. Platform Rotate
2. Platform Leveling Override
3. Jib
4. Power/Emergency Stop
5. Engine Star t/Auxiliary Power
or
E n gi n e S t ar t /A u xi l i ar y Po w er / Fu n ct i o n E n ab l e
6. Hourmeter
7. Platform/Ground Select Switch
8. Swing
9. Tower Lift
10. Main Boom Lift
11. Main Boom Telescope
3-2– JLG Lift –3121295
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR
SLIGHT LEVELING OF THE PLATFORM. INCORRECT USE COULD CAUSE
THE LOAD/OCCUPANT TO SHIFT OR FALL. FAILURE TO DO SO COULD
RESULT IN DEATH OR SERIOUS INJURY.
2. Platform Leveling Override
A three position switch allows the operator to adjust the
automatic self leveling system. This switch is used to
adjust platform level in situations such as ascending/
descending a grade.
3. Jib (If Equipped)
The jib control switch provides raising and lowering of
the jib when positioned to UP or DOWN.
SECTION 3 - MACHINE CONTROLS AND INDICATORS
NOTE: When Power/Emergency Stop switch is in the “ON” posi-
tion and engine is not running, an alarm will sound, indicating Ignition is “ON”.
WHEN THE MACHINE IS SHUT DOWN THE MASTER/EMERGENCY STOP
SWITCH MUST BE POSITIONED TO THE “OFF” POSITION TO PREVENT
DRAINING THE BATTERY.
4. Power/Emergency Stop Switch
A two-position red mushroom shaped switch furnishes
power to PLATFORM/GROUND SELECT switch when
pulled out (on). When pushed in (off), power is shut off
to the PLATFORM/GROUND SELECT switch.
3121295– JLG Lift –3-3
SECTION 3 - MACHINE CONTROLS AND INDICATORS
5. Engine Start/Auxiliary Power Switch
or
Engine Start/ Auxiliary Power Switch /Function Enable.
To start the engine, the switch must be held "UP"
until the engine starts.
To use auxiliary power, the switch must be held
“DOWN” for duration of auxiliary pump use. Aux
power can only be used if the engine is not running.
If equipped, the enable switch must be held
"DOWN" to enable all boom controls when the
engine is running.
NOTE: Auxiliary power only works if there is no engine oil pres-
sure, and is disabled if engine is running.
NOTE: Functions will operate at a slower than normal rate
because of the lesser flow of hydraulic fluid delivered.
WHEN USING AUXILIARY POWER, DO NOT OPERATE MORE THAN ONE
FUNCTION AT A TIME. (SIMULTANEOUS OPERATION CAN OVERLOAD
THE AUXILIARY PUMP.)
6. Hourmeter
An hour meter, installed in the bottom portion of the
Ground Control box, registers the amount of time the
machine has been in use, with engine running. By connecting into the oil pressure circuit of the engine, only
engine run hours are recorded. The hour meter registers
up to 9,999.9 hours and cannot be reset.
7. Platform/Ground Select Switch
A three position, key operated switch supplies power to
the platform control console when positioned to PLATFORM. With the switch key held in the GROUND position, power is shut off to platform and only ground
controls are operable.
NOTE: With the Platform/Ground Select Switch in the center posi-
tion, power is shut off to controls at both operating stations.
3-4– JLG Lift –3121295
8. Swing Control
SECTION 3 - MACHINE CONTROLS AND INDICATORS
The SWING control switch provides 360 degrees continuous turntable rotation when positioned to RIGHT or
LEFT.
WHEN OPERATING THE BOOM ENSURE THERE ARE NO PERSONNEL
AROUND OR UNDER PLATFORM.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM
MOVEMENT DO NOT RETURN TO THE OFF POSITION WHEN RELEASED.
9. Tow e r L i f t
The TOWER LIFT control switch provides raising and
lowering of the tower boom when positioned to UP or
DOWN.
10. Main Lift Control
The MAIN LIFT control switch provides raising and lowering of the main boom when positioned to UP or
DOWN.
11. Main Telescope Control
The MAIN TELESCOPE control switch provides extension and retraction of the boom, when positioned to IN
or OUT.
3121295– JLG Lift –3-5
SECTION 3 - MACHINE CONTROLS AND INDICATORS
7
9
8
101112
654321
Figure 3-2. Ground Control Indicator Panel
1. Battery Charging
2. Low Engine Oil Pressure
3. High Engine Water Temp.
4. High Engine Oil Temp.
5. Engine Malfunction Indicator
6. Low Fuel
7. Glow Plug
8. Boom Malfunction
9. Platform Overload
10. Hyd. Filter Bypass
11. Transmission Filter By-Pass
12. Engine Air Filter By-Pass
Ground Control Indicator Panel
1. Battery Discharging Indicator
When illuminated indicates a problem in the battery or
charging circuit, and service is required.
2. Engine Oil Pressure Indicator
When illuminated indicates that engine oil pressure is
below normal and service is required.
3. Engine Coolant Temperature Indicator.(Ford)
When illuminated indicates that engine coolant temperature is abnormally high and service is required.
4. Engine Oil Temperature Indicator (Deutz)
When illuminated indicates that the temperature of the
engine oil, which also serves as engine coolant, is
abnormally high and service is required.
Indicates that the Engine Control Module has detected a
malfunction in the Electronic Fuel Injection System and
a Diagnostic Trouble Code has been set in the ECM.
Refer to the Service Manual for instructions concerning
the trouble codes and trouble code retrieval.
The malfunction indicator light will illuminate for 2-3 seconds when the key is positioned to the on position to act
as a self test.
6. Low Fuel Level Indicator (N/A for liquid propane)
When illuminated indicates that the fuel level is 1/8 full or
less. When the light first turns on, there are approximately four usable gallons of fuel remaining.
7. Glow Plug Indicator (If Equipped)
When illuminated the glow plugs are operating. After
turning on ignition, wait until light goes out before cranking engine.
8. Boom Malfunction Indicator
If the Boom Malfunction Indicator illuminates when
attempting to activate a tower boom function, the function is being cutout by tower boom limit switch. The
function is not permitted at the current boom configuration.
If the Boom Malfunction Indicator is flashing or on
steady without a boom function attempt, the upright is
out of alignment or the monitoring system is in need of
calibration.
DISCONTINUE OPERATION IF THE BOOM MALFUNCTION LIGHT IS
FLASHING OR ON STEADY.
IF THE UPRIGHT IS OUT OF ALIGNMENT WITH THE PLATFORM RAISED,
LOWER THE MAIN BOOM AND TELESCOPE OUT UNTIL THE PLATFORM
REACHES THE GROUND. THE TOWER BOOM DOWN FUNCTION IS CUT
OUT IN THIS CONDITION. REPORT THE PROBLEM TO THE PROPER SERVICE PERSONNEL. DO NOT OPERATE THE MACHINE UNTIL THE MALFUNCTION IS CORRECTED.
3121295– JLG Lift –3-7
SECTION 3 - MACHINE CONTROLS AND INDICATORS
9. Platform Overload (If equipped)
Indicates the platform has been overloaded.
10. Hydraulic Oil Filter Indicator (Prior to S/N 85331)
A gauge indicates that the return oil filter is too restrictive
and needs to be replaced.
11. Transmission Pump Oil Filter Indicator (Prior to S/N
85331)
Indicates that the charge pump filter is too restrictive
and needs to be replaced.
12. Engine Air Filter Indicator (Prior to S/N 85331)
When illuminated indicates that the air filter is too restrictive and needs to be replaced.
Platform Station
1. Power/Emergency Stop
An ON-OFF POWER/EMERGENCY STOP switch and a
separate ENGINE START/AUXILIARY POWER toggle
switch on the platform console supply electrical power
to the starter solenoid, when the ignition switch is placed
in the “ON” position and the ENGINE START switch is
pushed forward momentarily.
2. Travel Warning Horn
A push-type HORN switch supplies electrical power to
an audible warning device when pressed.
3. Main Lift/Swing Controller
A proportional dual axis joystick is provided for main lift
and swing. Push forward to lift up, pull backward to lift
down. Move right to swing right, move left to swing left.
NOTE: Main boom lift and swing functions may be selected in
combination. Maximum speed is reduced when multiple
functions are selected.
3-8– JLG Lift –3121295
SECTION 3 - MACHINE CONTROLS AND INDICATORS
4. Main Telescope Control
The MAIN TELESCOPE control switch provides extension and retraction of the main boom when positioned to
IN or OUT.
NOTE: MAIN, LIFT, SWING, and DRIVE control levers are spring-
loaded and will automatically return to neutral (OFF) position when released.
5. Drive/Steer
Proportional single axis joystick is provided to control
drive. Push forward to drive forward, pull back to drive in
reverse. Steering is accomplished via a thumb-activated
rocker switch on the end of the handle. Push on the left
side of the switch to steer left, on right side to steer right.
NOTE: Both drive and steer functions work in the opposite direc-
tion when the main boom is positioned over front of the
chassis.
NOTE: When main boom is positioned above horizontal and any
of the following switches, DRIVE SPEED/TORQUE
SELECT or FUNCTION SPEED, are positioned to HIGH,
high function speeds are automatically set to creep and
the machine continues to operate at a lower speed.
DO NOT OPERATE MACHINE IF DRIVE SPEED /TORQUE SELECT OR
FUNCTION SPEED SWITCHES OPERATE WHEN MAIN BOOM IS ABOVE
HORIZONTAL.
6. Function Speed
Controls the speed of Boom and Swing Functions.
Rotate CCW for slower speed and CW for faster speed.
To adjust to creep, turn knob fully CCW until it clicks.
3121295– JLG Lift –3-9
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1702567 A
1702676-B
7
139
2
5
4
1015863
1704997
1
141112
1. Power/Emergency Stop
2. Horn
3. Main Lift / Swing
4. Telescope
5. Drive/Steer
6. Function Speed Control
7. Drive Speed / Torque Select
8. Platform Rotate
9. Platform Level Override
10. Articulating Jib
11. Fuel Select
12. Lights
13. Steer Select
14. Engine Start / Aux Power
15. Tower Lift
Figure 3-3. Platform Control Console
3-10– JLG Lift –3121295
1702567 A
1702676-B
1704997
1705170 A
1702938
7
139
2
5
4
10 12178151863
1
141116
1. Power/Emergency Stop
2. Horn
3. Main Lift / Swing
4. Telescope
5. Drive/Steer
6. Function Speed Control
7. Drive Speed / Torque Select
8. Platform Rotate
9. Platform Level Override
10. Articulating Jib
11. Fuel Select
12. Lights
13. Steer Select
14. Engine Start / Aux Power
15. Tower Lift
16. Drive Orientation Override
17. Soft Touch Override
18. Soft Touch Indicator
Figure 3-4. Platform Control Console - w/Drive Orientation
SECTION 3 - MACHINE CONTROLS AND INDICATORS
3121295– JLG Lift –3-11
SECTION 3 - MACHINE CONTROLS AND INDICATORS
7. Drive Speed/Torque Select
Drive Speed/Torque Select is a three position switch The
forward position gives maximum drive speed by shifting
the drive motors to minimum the displacement and giving high engine when drive controller is moved. The
back position gives maximum torque for rough terrain
and climbing grades by shifting the wheel motors to
maximum displacement and giving high engine speed
when the drive controller is moved. The center position
allows the machine to be driven as quietly as possible
by leaving the engine at mid speed and the drive motors
in minimum displacement or fastest speed.
8. Platform Rotate
The Swing control switch provides 360 degrees continuous turntable rotation when positioned to LEFT or
RIGHT.
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR
SLIGHT LEVELING OF THE PLATFORM. INCORRECT USE COULD CAUSE
THE LOAD/OCCUPANT TO SHIFT OR FALL. FAILURE TO DO SO COULD
RESULT IN DEATH OR SERIOUS INJURY.
9. Platform Leveling Override
A three position switch allow the operator to adjust the
automatic self leveling system. This switch is used to
adjust platform level in situation such as ascending/
descending a grade.
10. Articulating Jib Boom. (If Equipped)
The ARTICULATING control switch provides raising and
lowering of the jib when positioned to UP or DOWN.
Gasoline or liquid propane fuel may be selected by moving the switch to the appropriate position. It is unnecessary to purge the fuel system before switching fuels, so
there is no waiting period when switching fuels while the
engine is running.
3-12– JLG Lift –3121295
12. Work Lights. (If Equipped)
The switch, on the light, operates work lights if the
machine is so equipped. The power/emergency stop
switch must be on, (mushroom button out) but ignition
switch does not have to be on to operate the lights, so
care must be taken to avoid draining the battery if left
unattended. The master switch and / or the ignition
switch at the ground control will turn off power to all
lights.
13. Steer Select. (If Equipped)
When equipped with four wheel steering, the action of
the steering system is operator selectable. The center
switch position gives conventional front wheel steering
with the rear wheels unaffected. This is the best position
for normal driving at maximum speeds. The forward
position is for “crab” steering. When in this mode both
front and rear axles steer in the same direction, which
allows the chassis to move sideways as it goes forward.
This can be used for positioning the machine in aisle
ways or against buildings. The back switch position is
for “coordinated” steering. In this mode the front and
rear axles steer in the opposite directions to produce the
tightest turning circle for maneuvering in confined areas.
A decal located at top of switch, instructs the desired
wheel maneuver with the switch position.
SECTION 3 - MACHINE CONTROLS AND INDICATORS
To re-synchronize the front and rear axles, activate the
steer switch (thumb rocker) until all steer cylinders are at
the end of their stroke. This can be done in either crab or
coordinated mode.
14. Auxiliary Power
When pushed forward, the switch energizes the starter
motor to start the engine.
When pushed back, it energizes the electrically operated hydraulic pump, when actuated. (Switch must be
held ON for duration of auxiliary pump use.)
The auxiliary pump functions to provide sufficient oil flow
to operate the basic machine functions should the main
pump or engine fail. The auxiliary pump will operate
tower boom lift, tower telescope, main boom lift, main
telescope and swing.
3121295– JLG Lift –3-13
SECTION 3 - MACHINE CONTROLS AND INDICATORS
15. Tow e r L i f t
The three position center-off toggle switch provides for
raising and lowering of the tower boom when positioned
to “UP” or “DOWN”.
16. Drive Orientation Override
When the boom is swung over the rear tires or further in
either direction, the Drive Orientation indicator will illuminate when the drive function is selected. Push and
release the switch, and within 3 seconds move the
Drive/Steer control to activate drive or steer. Before driving, locate the black/white orientation arrows on both
the chassis and the platform controls and match the
control direction arrow to the intended chassis direction.
17. Soft Touch Override Switch (If equipped)
This switch enables the functions that were cut out by
the Soft Touch system to operate again at creep speed,
allowing the operator to move the platform away from
the obstacle that caused the shutdown situation.
18. Soft Touch Indicator (If Equipped)
Indicates the Soft Touch bumper is against an object. All
controls are cut out until the override button is pushed,
at which time controls are active in the Creep Mode.
3-14– JLG Lift –3121295
SECTION 3 - MACHINE CONTROLS AND INDICATORS
Platform Control Indicator Panel
NOTE: The platform control indicator panel uses different shaped
symbols to alert the operator to different types of operational situations that could arise. The meaning of those
symbols are explained below.
Indicates a potentially hazardous situation, which
if not corrected, could result in serious injury or
death. This indicator will be red.
Indicates an abnormal operating condition,
which if not corrected, may result in machine
interruption or damage. This indicator will be yellow.
Indicates important information regarding the
operating condition, i.e. procedures essential for
safe operation. This indicator will be green with
the exception of the capacity indicator which will
be green or yellow depending upon platform
position.
NOTE: For engine starting, the footswitch must be in the released
(up) position. Footswitch must be actuated in order for
controls to function.
NOTE: These machines have a 7 second delay timer. If a function
has not been activated within 7 seconds after depressing
the footswitch, recycle footswitch.
TO AVOID SERIOUS INJURY, DO NOT REMOVE, MODIFY OR DISABLE
THE FOOTSWITCH BY BLOCKING OR ANY OTHER MEANS.
FOOTSWITCH MUST BE ADJUSTED SO THAT FUNCTIONS WILL OPERATE WHEN PEDAL IS APPROXIMATELY AT ITS CENTER OF TRAVEL. IF
SWITCH OPERATES WITHIN LAST 1/4" OF TRAVEL, TOP OR BOTTOM, IT
SHOULD BE ADJUSTED.
3121295– JLG Lift –3-15
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1. Footswitch/Enable Indicator
To operate any function, the footswitch must be
depressed and the function selected within seven seconds. The enable indicator shows that the controls are
enabled. If a function is not selected within seven seconds, or if a seven second lapse between ending one
function and beginning the next function, the enable
light will go out and the footswitch must be released and
depressed again to enable the controls.
Releasing the footswitch removes power from all controls and applies the drive brakes.
TO AVOID SERIOUS INJURY, DO NOT REMOVE, MODIFY OR DISABLE
THE FOOTSWITCH BY BLOCKING OR ANY OTHER MEANS.
FOOTSWITCH MUST BE ADJUSTED IF FUNCTIONS ACTIVATE WHEN
SWITCH ONLY OPERATES WITHIN LAST 1/4" OF TRAVEL, TOP OR BOTTOM.
2. Engine Malfunction Indicator
On machines prior to S/N 62045, the light turns on and
an alarm sounds when machine’s power system
requires immediate service. Any of the following conditions will turn on light and alarm: low engine oil pressure, high engine coolant temperature, clogged engine
air filter, low alternator output, clogged hydraulic oil
return filter, or clogged charge pump filter.
On machines from S/N 62045 to present, the light indicates that the JLG Control System has detected a malfunction and a Diagnostic Trouble Code has been set in
the system memory. Refer to the Service Manual for
instructions concerning the trouble codes and trouble
code retrieval.
The malfunction indicator light will illuminate for 2-3 seconds when the key is positioned to the on position to act
as a self test.
When illuminated (Yellow) the Soft Touch bumper is
against an object. All controls are disabled until the
override button is pushed, at which time controls are
active in the Creep mode.
4. AC Generator (Green)
When illuminated (Green), the light indicates the generator is in operation.
5. Low Fuel Indicator (Yellow) N/A for liquid propane
When illuminated (Yellow), the fuel tank is 1/8 full or less.
When the light first turns on, there are approximately
four usable gallons of fuel remaining.
6. Capacity Indicator (If equipped)
Indicates the maximum platform capacity for the current
position of the platform. Restricted capacities are permitted at restricted platform positions (shorter boom
lengths and higher boom angles).
NOTE: Refer to the capacity decals on the machine for restricted
and unrestricted platform capacities.
7. Creep Speed Indicator
Illuminated (Green) when the Function Speed Control is
turned to the creep position, the indicator acts as a
reminder that all functions are set to the slowest speed.
8. Glow Plug Indicator (If Equipped)
When illuminated the glow plugs are operating. After
turning on ignition, wait until light goes out before cranking engine.
3121295– JLG Lift –3-19
SECTION 3 - MACHINE CONTROLS AND INDICATORS
9. Tilt Alarm Warning Light and Alarm
This orange illuminator indicates that the chassis is on a
slope. An alarm will also sound when the chassis is on a
slope and the boom is above horizontal. If lit when boom
is raised or extended, retract and lower to below horizontal then reposition machine so that it is level before
continuing operation. If the boom is above horizontal
and the machine is on a slope, the tilt alarm warning
light will illuminate and an alarm will sound and CREEP
is automatically activated.
IF TILT WARNING LIGHT IS ILLUMINATED WHEN BOOM IS RAISED OR
EXTENDED, RETRACT AND LOWER TO BELOW HORIZONTAL THEN
REPOSITION MACHINE SO THAT IT IS LEVEL BEFORE EXTENDING
BOOM OR RAISING BOOM ABOVE HORIZONTAL.
10. Overload Indicator (If equipped)
Indicates the platform has been overloaded.
3-20– JLG Lift –3121295
SECTION 3 - MACHINE CONTROLS AND INDICATORS
11. Boom Malfunction Indicator
When an audible alarm sounds and the Boom Malfunction Indicator illuminates when attempting to activate a
tower boom function, the function is being cutout by
tower boom limit switch. This function is not permitted at
the current boom configuration.
When an audible alarm sounds and the Boom Malfunction Indicator illuminates steady without a boom function
attempt, the upright is out of alignment.
DISCONTINUE OPERATION IF THE UPRIGHT IS OUT OF ALIGNMENT OR
THE BOOM MALFUNCTION LIGHT REMAINS ILLUMINATED.
IF THE UPRIGHT IS OUT OF ALIGNMENT WITH THE PLATFORM RAISED,
LOWER THE MAIN BOOM AND TELESCOPE OUT UNTIL THE PLATFORM
REACHES THE GROUND. THE TOWER BOOM DOWN FUNCTION IS CUT
OUT IN THIS CONDITION. REPORT THE PROBLEM TO THE PROPER SERVICE PERSONNEL. DO NOT OPERATE THE MACHINE UNTIL THE CONDITION IS CORRECTED.
12. Drive Orientation Indicator
When the boom is swung beyond the rear drive tires or
further in either direction, the Drive Orientation indicator
will illuminate when the drive function is selected. This is
a signal for the operator to activate the Drive Orientation
Override Switch and verify the drive control direction is
correct.
3121295– JLG Lift –3-21
SECTION 3 - MACHINE CONTROLS AND INDICATORS
NOTES:
3-22– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
SECTION 4. MACHINE OPERATION
4.1DESCRIPTION
This machine is a self-propelled hydraulic lift equipped with a
work platform on the end of an elevating and rotating boom.
The primary operator control station is in the platform. From
this control station, the operator can drive and steer the
machine in both forward and reverse directions. The operator can raise or lower the upper or lower boom or swing the
boom to the left or right. Standard boom swing is 360 degree
continuous left and right of the stowed position. The machine
has a Ground Control Station which will override the Platform
Control Station. Ground Controls operate Boom Lift and
Swing, and are to be used in an emergency to lower the platform to the ground should the operator in the platform be
unable to do so. The Ground Control is also to be used in
Pre-Start Inspection.
4.2OPERATING CHARACTERISTICS AND
LIMITATIONS
Capacities
The boom can be raised above horizontal with or without any
load in the platform if:
1. Machine is positioned on a smooth, firm and level surface.
2. Load is within manufacturer’s rated design capacity.
3. All machine systems are functioning properly.
4. Proper tire pressure exists in the tires.
5. Machine is as originally equipped from JLG.
Stability
Machine stability is based on two positions which are called
FORWARD STABILITY and BACKWARD STABILITY. The
machine position of least forward stability is shown in Figure
4-1. and its positions of least backward stability is shown in
Figure 4-2. and Figure 4-3.
3121295– JLG Lift –4-1
SECTION 4 - MACHINE OPERATION
TO AVOID FORWARD OR BACKWARD TIPPING, DO NOT OVERLOAD
MACHINE OR OPERATE ON AN OUT-OF-LEVEL SURFACE.
4.3ENGINE OPERATION
NOTE: Initial starting should always be performed from the
Ground Control station.
MACHINES WITH DIESEL ENGINES. AFTER TURNING ON IGNITION,
OPERATOR MUST WAIT UNTIL GLOW PLUG INDICATOR LIGHT GOES
OUT BEFORE CRANKING ENGINE.(IF EQUIPPED)
4. Turn key of SELECT switch to GROUND. Position
POWER/EMERGENCY STOP switch to ON, then push
the ENGINE START switch to the upward position until
engine starts.
Starting Procedure
1. Check engine oil. If necessary, add oil in accordance
with the Engine Manufacturer’s manual.
2. Check fuel level. Add fuel if necessary.
3. Check that air cleaner components are in place and
securely fastened.
IF ENGINE FAILS TO START PROMPTLY, DO NOT CRANK FOR AN
EXTENDED PERIOD. SHOULD ENGINE FAIL TO START ONCE AGAIN,
ALLOW STARTER TO “COOL OFF” FOR 2-3 MINUTES. IF ENGINE FAILS
AFTER SEVERAL ATTEMPTS, REFER TO ENGINE MAINTENANCE MANUAL.
ALLOW ENGINE TO WARM-UP FOR A FEW MINUTES AT LOW SPEED
BEFORE APPLYING ANY LOAD.
5. After engine has had sufficient time to warm up, shut
engine off.
6. Turn key of SELECT switch to PLATFORM.
7. From Platform position POWER/EMERGENCY STOP
switch to ON, then push the ENGINE START switch to
the forward position until engine starts.
NOTE: Footswitch must be in released (up) position before
starter will operate. If starter operates with footswitch in
the depressed position, DO NOT OPERATE MACHINE.
4-2– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Figure 4-1. Position of Least Forward Stability
3121295– JLG Lift –4-3
SECTION 4 - MACHINE OPERATION
Figure 4-2. Positions of Least Backward Stability (Sheet 1 of 2)
4-4– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Figure 4-3. Positions of Least Backward Stability (Sheet 2 of 2)
3121295– JLG Lift –4-5
SECTION 4 - MACHINE OPERATION
Shutdown Procedure
IF AN ENGINE MALFUNCTION NECESSITATES UNSCHEDULED SHUTDOWN, DETERMINE AND CORRECT CAUSE BEFORE RESUMING ANY
OPERATION.
1. Remove all load and allow engine to operate at low
speed setting for 3-5 minutes; this allows for further
reduction of internal engine temperature.
2. Position POWER/EMERGENCY STOP switch to OFF.
3. Turn key of MASTER switch to OFF position.
NOTE: Refer to Engine Manufacturer’s manual for detailed infor-
mation.
4.4TRAVELING (DRIVING)
(See Figure 4-4.)
DO NOT DRIVE WITH BOOM ABOVE HORIZONTAL EXCEPT ON A
SMOOTH, FIRM AND LEVEL SURFACE.
TO AVOID LOSS OF TRAVEL CONTROL OR “TIP OVER,” DO NOT DRIVE
MACHINE ON GRADES EXCEEDING THOSE SPECIFIED ON THE SERIAL
NUMBER PLATE.
DO NOT DRIVE ON SIDESLOPES WHICH EXCEED 5 DEGREES (ANSI) OR
3 DEGREES (CE/AUS).
USE EXTREME CAUTION WHEN DRIVING IN REVERSE AND AT ALL
TIMES WHEN THE PLATFORM IS ELEVATED.
BEFORE DRIVING, LOCATE THE BLACK/WHITE ORIENTATION ARROWS
ON BOTH THE CHASSIS AND THE PLATFORM CONTROLS. MOVE THE
DRIVE CONTROLS IN A DIRECTION MATCHING THE DIRECTIONAL
ARROWS.
4-6– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Traveling Forward and Reverse
1. At Platform Controls, pull out Emergency Stop switch,
start engine, and activate footswitch.
2. Position Drive controller to FORWARD or REVERSE as
desired.
4.5STEERING
Depress the footswitch to steer machine, push switch left to
steer left, to the right, to steer right.
BEFORE OPERATING MACHINE, MAKE SURE UPPER BOOM IS POSITIONED OVER REAR AXLE. IF BOOM IS OVER FRONT AXLE (STEER
WHEELS), STEER AND DRIVE CONTROLS WILL MOVE IN OPPOSITE
DIRECTION. THE DIRECTION WILL MATCH THE ARROW DECAL OF THE
HAND CONTROLLER WITH THE ARROW DECAL ON THE FRAME.
4.6PARKING AND STOWING
Park and stow machine as follows:
1. Park machine in travel position; boom lowered over rear,
all access panels and doors closed and secured, ignition off, turntable locked.
2. Check that brakes hold machine in position.
3. Chock wheels front and rear.
4. Turn off SELECT switch and remove key.
3121295– JLG Lift –4-7
SECTION 4 - MACHINE OPERATION
4.7PLATFORM
Loading From Ground Level
1. Position chassis on a smooth, firm and level surface.
2. If total load (personnel, tools and supplies) is less then
rated capacity, distribute load uniformly on platform floor
and proceed to work position.
Loading From Positions Above Ground Level
Before loading weight to platform above ground level:
1. Determine what the total rated capacity weight will be
after additional weight is loaded (personnel, tools and
supplies).
2. If total weight in platform will be less then rated capacity,
proceed with distributing weight uniformly on platform
floor.
Platform Level Adjustment
1. Leveling UP. Depress footswitch To raise platform, position PLATFORM LEVEL control switch UP and hold until
platform is level.
2. Leveling DOWN. Depress footswitch To lower platform,
position PLATFORM LEVEL control switch to DOWN and
hold until platform is level.
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR
SLIGHT LEVELING OF THE PLATFORM. INCORRECT USE COULD CAUSE
THE LOAD/OCCUPANT TO SHIFT OR FALL. FAILURE TO DO SO COULD
RESULT IN DEATH OR SERIOUS INJURY.
Platform Rotation
To rotate the platform to the left or right, use the Platform
Rotate control switch to select the direction and hold until
desired position is reached.
4-8– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Figure 4-4. Grade and Sideslopes.
LEVEL
G
R
A
D
E
S
I
D
E
S
L
O
P
E
3121295– JLG Lift –4-9
SECTION 4 - MACHINE OPERATION
4.8BOOM
(See Figure 4-4.)
AN ORANGE TILT ALARM WARNING LIGHT, LOCATED ON THE CONTROL
CONSOLE, LIGHTS WHEN THE CHASSIS IS ON A SEVERE SLOPE (5
DEGREES OR GREATER). DO NOT SWING, EXTEND OR RAISE MAIN
BOOM ABOVE HORIZONTAL WHEN LIT.
DO NOT DEPEND ON TILT ALARM AS A LEVEL INDICATOR FOR THE
CHASSIS. TILT ALARM INDICATES CHASSIS IS ON A SEVERE SLOPE (5
DEGREES, ANSI OR 3 DEGREES, CE/AUS OR GREATER). CHASSIS MUST
BE LEVEL BEFORE SWINGING, EXTENDING OR RAISING TOWER BOOM
ABOVE HORIZONTAL.
TO AVOID UPSET, IF ORANGE TILT ALARM WARNING LIGHT LIGHTS
WHEN MAIN BOOM IS EXTENDED OR RAISED ABOVE HORIZONTAL,
RETRACT AND LOWER PLATFORM TO NEAR GROUND LEVEL. THEN
REPOSITION MACHINE SO THAT CHASSIS IS LEVEL BEFORE EXTENDING OR RAISING MAIN BOOM.
TRAVELING WITH MAIN BOOM RETRACTED AND BELOW HORIZONTAL
IS PERMITTED ON GRADES AND SIDE SLOPES SPECIFIED ON THE
SERIAL NUMBER PLACARD.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINERY IF ANY
CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM
MOVEMENT DO NOT RETURN TO THE OFF OR NEUTRAL POSITION
WHEN RELEASED.
TO AVOID A COLLISION AND INJURY IF PLATFORM DOES NOT STOP
WHEN A CONTROL SWITCH OR LEVER IS RELEASED, REMOVE FOOT
FROM FOOTSWITCH OR USE EMERGENCY STOP TO STOP THE
MACHINE.
Swinging the Boom
ASSURE THAT TURNTABLE LOCK IS DISENGAGED BEFORE STARTING
ANY SWING OPERATION.
Depress footswitch. To swing boom, position SWING control
switch or controller to RIGHT or LEFT for direction desired.
4-10– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Raising and Lowering the Tower Boom
To raise or lower the Tower Boom, depress footswitch, position TOWER LIFT controller UP OR DOWN, and hold until the
desired height is reached
DISCONTINUE OPERATION IF THE UPRIGHT IS OUT OF ALIGNMENT OR
THE BOOM MALFUNCTION LIGHT REMAINS ILLUMINATED.
IF THE UPRIGHT IS OUT OF ALIGNMENT WITH THE PLATFORM RAISED,
LOWER THE MAIN BOOM AND TELESCOPE OUT UNTIL THE PLATFORM
REACHES THE GROUND. THE TOWER BOOM DOWN FUNCTION IS CUT
OUT IN THIS CONDITION. REPORT THE PROBLEM TO THE PROPER SERVICE PERSONNEL. DO NOT OPERATE THE MACHINE UNTIL THE CONDITION IS CORRECTED.
Raising and Lowering the Main Boom
To raise and lower Main Boom, depress footswitch, position
MAIN LIFT controller to UP OR DOWN, and hold until desired
height is reached.
Telescoping the Main Boom
To extend or retract Main Boom, depress footswitch, position
MAIN TELESCOPE control switch to IN or OUT, and hold
until platform reaches desired position.
4.9SHUT DOWN AND PARK
1. Drive machine to a protected area.
2. Assure main boom is fully retracted and lowered over
rear (Drive) axle; all access panels and doors closed
and secured.
3. Remove all load and allow engine to idle 3-5 minutes to
permit reduction of engine internal temperatures.
4. At Ground Controls, turn KEY SELECT switch to (center)
OFF. Position, POWER/EMERGENCY STOP switch
(down) to OFF. Remove key.
5. Cover Platform Control console to protect instruction
placards, warning decals and operating controls from
hostile environment.
3121295– JLG Lift –4-11
SECTION 4 - MACHINE OPERATION
4.10 LIFTING AND TIE DOWN
When transporting machine, boom must be in the stowed
position mode, (booms lowered and retracted) with turntable
lock pin engaged, and machine securely tied down to truck
or trailer deck. Six tie down eyes are provided in the frame
slab, one at each corner of the machine and 2 holes at the
center of the frame. (See Figure 4-5., Machine Tie Down)
If it becomes necessary to lift the machine using an overhead or mobile crane, it is very important that the turntable
lock pin is engaged, lifting devices are attached only to the
designated lifting eyes, and spreader bars are to be used to
prevent damage to the machine. (See Figure 4-6., Lifting
Chart for gross machine weights.)
NOTE: When transporting machine over rough terrain or long dis-
tance, the boom needs to be chocked and strapped. This
prevents the boom from bouncing up causing possible
damage.
NOTE: Crane and lifting devices, chains, slings, etc., must be
capable of handling the gross machine weight.
NOTE: Lifting eyes are provided at the front and rear in the frame
slab. Each of the four chains or slings used for lifting
machine must be adjusted individually so machine
remains level when elevated.
SECURE TURNTABLE WITH TURNTABLE LOCK BEFORE TRAVELING
LONG DISTANCES OR HAULING MACHINE ON TRUCK/TRAILER.
4-12– JLG Lift –3121295
Figure 4-5. Machine Tie Down
NOTE: Block rotator and platform.
Secure platform w/o overtightening.
NOTE: Rig chains so
as not to rub.
SECTION 4 - MACHINE OPERATION
3121295– JLG Lift –4-13
SECTION 4 - MACHINE OPERATION
Figure 4-6. Lifting Chart
4-14– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
4.11 OSCILLATING AXLE LOCKOUT TEST (IF
EQUIPPED)
LOCKOUT SYSTEM TEST MUST BE PERFORMED QUARTERLY, ANY TIME
A SYSTEM COMPONENT IS REPLACED, OR WHEN IMPROPER SYSTEM
OPERATION IS SUSPECTED.
Refer to Section 2.4, Oscillating Axle Lockout Test (If
Equipped) for procedure.
4.12 EMERGENCY TOWING
RUNAWAY VEHICLE/MACHINE HAZARD. MACHINE HAS NO TOWING
BRAKES. TOWING VEHICLE MUST BE ABLE TO CONTROL MACHINE AT
ALL TIMES. ON-HIGHWAY TOWING NOT PERMITTED. FAILURE TO FOLLOW INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH.
MAXIMUM TOWING SPEED 5 M.P.H. (8 K.M.H.)
MAXIMUM TOWING GRADE 25%.
DO NOT TOW MACHINE WITH ENGINE OPERATING OR DRIVE HUBS
ENGAGED.
1. Retract, lower and position boom in travel position; lock
turntable.
2. Disconnect drive hubs by inverting disconnect cap.
3121295– JLG Lift –4-15
SECTION 4 - MACHINE OPERATION
Figure 4-7. Drive Disconnect Hub
4.13 TOW BAR (IF EQUIPPED)
RUNAWAY VEHICLE/MACHINE HAZARD. MACHINE HAS NO TOWING
BRAKES. TOWING VEHICLE MUST BE ABLE TO CONTROL MACHINE AT
ALL TIMES. ON-HIGHWAY TOWING NOT PERMITTED. FAILURE TO FOLLOW INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH.
MAXIMUM TOWING SPEED 5 M.P.H. (8 K.M.H.)
MAXIMUM TOWING GRADE 25%.
Prior to towing the machine, complete the following:
DO NOT TOW MACHINE WITH ENGINE OPERATING OR DRIVE HUBS
ENGAGED.
1. Retract, lower and position boom in travel position; lock
turntable.
2. Lower tow bar and connect to towing vehicle
3. Reconnect the drive hubs by inverting the disconnect
cap when towing is complete.
4-16– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
3. Disconnect drive hubs by inverting disconnect cap.
Refer to Figure 4-7., Drive Disconnect Hub.
4. Position steer/tow selector valve for towing; pull valve
knob OUT for towing. The machine is now in the towing
mode.
After towing the machine, complete the following:
1. Actuate steer/tow selector valve for steering; push valve
knob IN to the actuated position.
2. Reconnect drive hubs by inverting disconnect cap.
3. Disconnect tow bar from towing vehicle and place it in
the stowed position as shown in Figure 4-8. The
machine is now in the driving mode.
4.14 WELDING LEAD (IF EQUIPPED)
This option consists of a single welding cable that is installed
in the power track and will allow stick welding from the platform, up to the full elevation of the machine. The single welding cable system differs from the two cable system of
previous machines.
DO NOT GROUND WELDER TO THE MACHINE. SERIOUS DAMAGE TO
THE MACHINE WILL RESULT. THIS SYSTEM IS INTENDED TO BE
GROUNDED TO THE MATERIAL BEING WELDED.
3121295– JLG Lift –4-17
SECTION 4 - MACHINE OPERATION
Figure 4-8. Tow Bar
4-18– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
4.15 DUAL FUEL SYSTEM (GAS ENGINE ONLY)
Description
The dual fuel system enables the standard gasoline engine
to run on either gasoline or LP gas. The system includes
pressurized cylinders mounted on the frame, and the valves
and switches needed to switch the fuel supply from gasoline
to LP gas or from LP gas to gasoline.
A two position, FUEL SELECT toggle switch at the platform
control station supplies electrical power to open the gasoline
shut-off solenoid and close the LP gas shut off solenoid
when positioned to the GASOLINE position. This switch also
allows electrical power to open the LP gas shut-off solenoid
and close the gasoline shut-off solenoid when positioned to
the LP position.
IT IS POSSIBLE TO SWITCH FROM ONE FUEL SOURCE TO THE OTHER
WITHOUT STOPPING THE ENGINE. EXTREME CARE MUST BE TAKEN
AND THE FOLLOWING INSTRUCTIONS MUST BE FOLLOWED.
Changing From Gasoline to LP Gas
1. Start engine from Ground Control Station.
2. Open hand valve on LP gas supply tank by turning
counterclockwise.
3. While the engine is operating, place the two position
LPG/Gasoline switch at the platform control station to
the "LP" position.
Changing From LP Gas to Gasoline
1. With engine operating on LP under a no-load condition,
position FUEL SELECT switch at Platform Control Station to GASOLINE position.
2. Close hand valve on LP gas supply tank by turning
clockwise.
3121295– JLG Lift –4-19
SECTION 4 - MACHINE OPERATION
Figure 4-9. Releveling Valve
4.16 RE-SYNCHRONIZE UPRIGHT
Releveling Valve
A pull type control valve allows the operator to adjust the
upright level cylinder if the upright is not 90° (vertical) relative
to the chassis (Refer to Figure 2.6 and Figure 2.7). This valve
is located in the tank compartment area.
Perform the following steps with the aid of an assistant:
1. Turn the key switch to the ground control position.
2. Start the engine.
3. Pull and hold the red relevel knob located next to the
main control valve. Refer to Figure 4-9.
4. Raise the tower boom 6 feet (1.8 m).
5. Release the red relevel knob.
6. Lower the tower boom fully and continue to hold down
the switch to Tower Down for an additional 20 seconds.
7. Repeat steps 3 thru 6 as necessary until the upright is
90° (vertical) relative to the chassis.
4-20– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
4.17 AIR COMPRESSOR
Normal Startup Procedure
1. Check compressor oil level - top up if necessary.
2. Air service valve (beside the compressor) closed.
3. Start the engine.
4. Compressor switch (in the platform) ON - compressor
should activate.
5. Allow the compressor to warm up for several minutes
before operating.
Normal Shutdown Procedure
1. Close service valve and allow compressor to unload and
cool down (approx. 5 min.).
2. Position the compressor switch in the platform to OFF.
3. Shut down the engine.
Daily Operation
Before Starting:
1. Check compressor oil level.
2. Check for any leaks or loose bolts.
3. Check drive belt is tight.
After Starting:
1. Check pressure gauge for correct operating pressure.
2. Check for leaks.
3121295– JLG Lift –4-21
SECTION 4 - MACHINE OPERATION
Figure 4-10. Decal Installation - Sheet 1 of 5
4-22– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Figure 4-11. Decal Installation - Sheet 2 of 5
3121295– JLG Lift –4-23
SECTION 4 - MACHINE OPERATION
Figure 4-12. Decal Installation - Sheet 3 of 5
4-24– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Figure 4-13. Decal Installation - Sheet 4 of 5
3121295– JLG Lift –4-25
SECTION 4 - MACHINE OPERATION
Figure 4-14. Decal Installation - Sheet 5 of 5
4-26– JLG Lift –3121295
SECTION 4 - MACHINE OPERATION
Table 4-1. Decal Legend
Item #ANSI
0274483-10
1- -- -- -
2170149917014991701499
3- -- -- -
4- -- -- -
5170150917015091701509
6- -- -- -
7170381117038111703811
8170381417038141703814
9170427717042771704277
10170441217044121704412
11- -- -1705084
12- -1705514- -
13- -- -- -
14- -- -- -
15170 5337- -- -
16- -- -- -
17- -- -- -
1817039531703942- -
French
0274488-11
CE/Aus
0274484-5
Table 4-1. Decal Legend
Item #ANSI
0274483-10
19- -- -- -
201702 8681704000- -
21170379717039241705921
22170533617053471705822
23170380417039481701518
24170380517039361705961
25325234717039841705828
26- -- -- -
27- -- -- -
28- -- -- -
29170347717034771703960
30- -- -- -
31170500717050071705007
32170150117015011701501
33100112180110011218031705978
34100112181410011218161705978
35170488517048851704885
361706 9481706948- -
French
0274488-11
CE/Aus
0274484-5
3121295– JLG Lift –4-27
SECTION 4 - MACHINE OPERATION
Table 4-1. Decal Legend
Item #ANSI
0274483-10
37100109614117059771705977
38170395910011312691703959
39100 11312691700584- -
40100 11084951001108495- -
4110010958091001095809- -
42- -- -- -
43- -- -- -
44- -- -- -
45- -- -- -
46- -- -- -
47- -- -- -
48- -- -- -
49- -- -- -
50- -- -- -
51- -- -- -
52- -- -- -
53- -- -- -
54- -- -- -
French
0274488-11
CE/Aus
0274484-5
Table 4-1. Decal Legend
Item #ANSI
0274483-10
55- -- -- -
561705 3511705429- -
French
0274488-11
CE/Aus
0274484-5
4-28– JLG Lift –3121295
SECTION 5. EMERGENCY PROCEDURES
5.1GENERAL
This section explains the steps to be taken in case of an
emergency situation while operating.
5.2INCIDENT NOTIFICATION
JLG Industries, Inc. must be notified immediately of any incident involving a JLG product. Even if no injury or property
damage is evident, the factory should be contacted by telephone and provided with all necessary details.
In USA:
JLG Phone: 877-JLG-SAFE (554-7233)
(8am till 4:45pm EST)
Outside USA:
240-420-2661
E-mail:
ProductSafety@JLG.com
Failure to notify the manufacturer of an incident involving a
JLG Industries product within 48 hours of such an occurrence may void any warranty consideration on that particular
machine.
SECTION 5 - EMERGENCY PROCEDURES
FOLLOWING ANY ACCIDENT, THOROUGHLY INSPECT THE MACHINE
AND TEST ALL FUNCTIONS FIRST FROM THE GROUND CONTROLS,
THEN FROM THE PLATFORM CONTROLS. DO NOT LIFT ABOVE 10 FT. (3
M) UNTIL YOU ARE SURE THAT ALL DAMAGE HAS BEEN REPAIRED, IF
REQUIRED, AND THAT ALL CONTROLS ARE OPERATING CORRECTLY.
3121295– JLG Lift –5-1
SECTION 5 - EMERGENCY PROCEDURES
5.3EMERGENCY OPERATION
Operator Unable to Control Machine
IF THE PLATFORM OPERATOR IS PINNED, TRAPPED OR
UNABLE TO OPERATE OR CONTROL MACHINE:
1. Other personnel should operate the machine from
ground controls only as required.
2. Other qualified personnel on the platform may use the
platform controls. DO NOT CONTINUE OPERATION IF
CONTROLS DO NOT FUNCTION PROPERLY.
3. Cranes, forklift trucks or other equipment can be used to
remove platform occupants and stabilize motion of the
machine.
Platform or Boom Caught Overhead
If the platform or boom becomes jammed or snagged in
overhead structures or equipment, rescue platform occupants prior to freeing the machine.
5.4EMERGENCY TOWING PROCEDURES
Towing this machine is prohibited, unless properly equipped.
However, provisions for moving the machine have been
incorporated. For specific procedures, refer to Section 4.
5-2– JLG Lift –3121295
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
SECTION 6. GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
6.1INTRODUCTION
This section of the manual provides additional necessary
information to the operator for proper operation and maintenance of this machine.
The maintenance portion of this section is intended as information to assist the machine operator to perform daily maintenance tasks only, and does not replace the more thorough
Preventive Maintenance and Inspection Schedule included
in the Service and Maintenance Manual.
Other Publications Available:
Service and Maintenance Manual ............................ 3121160
Illustrated Parts Manual - Global............................... 3121161
6.2OPERATING SPECIFICATIONS
Table 6-1. Operating Specifications
Maximum Work Load (Capacity)
A N SI U nr e st r ic t e d:
C E /A US U n re s tr i ct e d :
Maximum Travel Grade with boom in stowed
position (Gradeability) 4WD Figure 4-4.
Maximum Travel Grade
position (Side Slope)Figure 4-4.
Maximum Vertical Platform Height:74 ft. (22.5 m)
Maximum Horizontal Plat form Reach51 ft. 10 in . (15.8 m)
Ground Clearance12 in. (30 cm)
Wheelbase10 ft. (3.05 m)
Maximum Tire Load: 17,755 lbs. (8060 kg)
Maximum Drive Speed:3.0 mph (4.8 kph)
Maximum Hyd. Operating Pressure4500 psi (310 Bar)
Electrical System Voltage12 volts
Jet Blast Rating90 mph (145 kph)
with boom in stowed
500 lb (227 kg)
500 lb (230 kg)
45%
5° ANSI
3° CE/AUS
3121295– JLG Lift –6-1
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Table 6-1. Operating Specifications
Max. Ground Bearing Pressure
Gross Machine Weight 36,200 lb. (16,420 kg)
84 psi (5.3 kg/cm
Dimensional Data
Table 6-2. Dimensional Data
Turning Radius (Outside)14 ft.- 6 in. (4.42 m)
Turning Radius (Inside)11 ft.- 0 in. (2.13 m)
Boom Elevation
A b ov e Gr a de
B el o w Gr a de
Machine Height Stowed9 ft. 9.5 in.(2.98 m)
Machine Length (Stowed)36 ft.-6 in. (11.13 m)
Machine Width8 ft.-0 in. (2.44 m)
Wheelbase10 ft.- 0 in. (3.05 m)
+80 ft.-3 in. (24.46 m)
-13 ft.- 1 in. (3.99 m)
Capacities
3
)
Table 6-3. Capacities
Fuel TankApprox. 39 gallons (147.6 liters)
Hydraulic TankApprox. 40 gallons (151.4 liters)
Hydraulic System (Including Tank)77 Gal. (291.4 L)
Drive Hub17 ounces (0.50 L)
Engine Oil Capacity
F or d
D eu t z
C o ol i ng S ys t e m
C r an k ca s e
To t al C ap a c it y
C a te r pi l la r
I s uz u
G M
Air Compressor4 qts. (3.8 L)
4.5 Quar ts (4.25 L) w/Filter
5 Quar ts (4.5 L)
11 Quar ts (10.5 L) w/Filter
16 Quarts (15 L)
10.6 quar ts (10 L)
8.5 Quarts (8.0 L)
4.5 Quar ts (4.25 L) w/Filter
6-2– JLG Lift –3121295
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Engine Data
Table 6-4. Ford LRG-425 Specifications
Ty peW at er -c oo l ed
FuelGasoline
Oil Capacity4.5 Quar ts (4.25 L) w/Filter
Idle RPM1000
Low RPM1800
High RPM2800
Alternator95 Amp, Belt Drive
Fuel Co nsumption
L ow R P M
H ig h R PM
Battery1000 Cold Cranking Amps, 210
minute reserve Capacity, 12 VDC
Horsepower74 @ 3000 RPM, full load
Cooling System16 Quarts (15.14 L)
Spark PlugAWSF-52-C
Spark Plug Gap0.044 in. (1.117 mm)
3.45 GPH (13.06 lph)
4.60 GPH (17.41 lph)
Table 6-5. Deutz F4M2011F Specifications
TypeLiquid Cooled (Oil)
FuelDiesel
Oil Capacity
C oo l i ng S ys t em
Crankcase
To t al C ap a ci t y
Idle RPM1000
Low RPM1800
High RPM2800
Alternator55 Amp, belt drive
Fuel Consumption
L ow R P M
H ig h R PM
Battery1000 Cold Cranking Amps, 210
Horsepower65 @ 3000 RPM, full load
11 Quar ts (10.5 L) w/Filter
minutes Reserve Capacity, 12 VDC
5 Quar ts (4.5 L)
16 Quarts (15 L)
1.90 GPH (7.19 lph)
2.50 GPH (9.46 lph)
3121295– JLG Lift –6-3
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Table 6-6. Deutz D2011L04 Specifications
TypeLiquid Cooled (Oil)
FuelDiesel
Oil Capacity
C oo l i ng S ys t em
Crankcase
Total Capacity
11 Quar ts (10.5 L) w/Filter
5 Quarts (4.5 L)
16 Quarts (15 L)
Idle RPM1000
Low RPM1800
High RPM2600
Alternator55 Amp, belt drive
Fuel Cons umptio n
L ow R P M
H ig h R PM
1.90 GPH (7.19 lph)
2.50 GPH (9.46 lph)
Battery1000 Cold Cran king Amps, 210
minutes Reserve Capacity, 12 VDC
Horsepower64 @ 2600 RPM, full load
Table 6-7. Caterpillar 3044C/3.4
Ty peFou r S tr o ke Cy c le
Cylinders4 in-line
Bore3.70 inch (94 mm)
Stroke4.72 inch (120 mm)
Aspirationturbocharged
Compression ratio19:1
Displacement
203 in
3
(3.33 L)
Firing Order1-3-4-2
Rotation (viewed from flywheel)Counterclockwise
Oil Capacity (w/filter)10.6 quarts (10 L)
Cooling System (Engine Only)5.8 quarts (5.5 L)
Idle RPM - 3044C1000
Idle RPM - 3.41200
Low RPM1800
High RPM2600
Alternator60 Amp, belt drive
6-4– JLG Lift –3121295
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Table 6-8. GM 3.0L
FuelGasoline or Gasoline/LP Gas
No. of Cylinders4
BHP
G as o l in e
L P
Bore4.0 in. (101.6 mm)
Stroke3.6 in. (91.44 mm)
Displacement181 cu.in. (3.0 L, 2966 cc)
Oil Capacity w/filter4.5 qts. (4.25 L)
Minimum Oil Pressure
a t i d l e
H ot
Compression Ratio9.2:1
Firing Order1-3-4-2
Max. RPM2800
18 psi (1.2 Bar) @ 2000 rpm
83 hp @ 3000 rpm
75 hp @ 3000 rpm
6 psi (0.4 Bar) @ 1000 rpm
Tires
Table 6-9. Tire Specifications
Ply
SizeType
IN 385/65D 19.5pneumatic16H95PSI
IN 445/55D 19.5pneumatic16H85 PSI
15 X 19.5pneumatic16H95PSI
18 X 19.5pneumatic16H85 PSI
IN 385/65D 19.5foam-filled16HN/A
IN 445/55D 19.5foam-filled16HN/A
15 X 19.5foam-filled16HN/A
18 X 19.5foam-filled16HN/A
Rating
Load
Range
Pressure
(6.5 Bar)
(6.0 Bar)
(6.5 Bar)
(6.0 Bar)
3121295– JLG Lift –6-5
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Hydraulic Oil
Table 6-10. Hydraulic Oil
Hydraulic System
Operating
Temperature Range
+0° to + 180° F (-18° to +83° C)10W
+0° to + 210° F (-18° to +99° C)10W-20, 10W30
+50° to + 210° F (+10° to +99° C20W-20
NOTE: Hydraulic oils must have anti-wear qualities at least to API
Service Classification GL-3, and sufficient chemical stability for mobile hydraulic system service. JLG Industries
recommends Mobilfluid 424 hydraulic oil, which has an
SAE viscosity index of 152.
NOTE: When temperatures remain consistently below 20
degrees F. (-7 degrees C.), JLG Industries recommends
the use of Mobil DTE13.
Aside from JLG recommendations, it is not advisable to mix oils
of different brands or types, as they may not contain the same
required additives or be of comparable viscosities. If use of
hydraulic oil other than Mobilfluid 424 is desired, contact JLG
Industries for proper recommendations.
S.A.E. Viscosity
Grade
Table 6-11. Mobilfluid 424 Specs
SAE Grade10W30
Gravity, API29.0
Density, Lb/Gal. 60°F7.35
Pour Point, Max-46°F (-43°C)
Flash Point, Min.442°F (228°C)
Viscosity
Brookfield, cP at -18°C2700
at 40° C55 cSt
at 100° C9.3 cSt
Viscosity Index152
6-6– JLG Lift –3121295
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Table 6-12. Mobil DTE 13M Specs
ISO Viscosity Grade #32
Specific Gravity0.877
Pour Point, M ax-40 °F (-40 °C)
Flash Point, Min.330°F (166°C)
Viscosity
at 40° C33cSt
at 100° C6.6 cSt
at 100° F169 SUS
at 210° F48 SUS
cp at -20° F6,200
Viscosity Index140
Table 6-13. Mobil EAL 224H Specs
TypeSynthetic Biodegradable
ISO Viscosity Grade32/46
Specific Gravity.922
Pour Point, Max-25°F (-32°C)
Flash Point, Min.428°F (220°C)
Operating Temp.0 to 180°F (-17 to 162°C)
Weight7.64 lb. per g al.
(0.9 kg per liter)
Viscosity
at 40° C37 cSt
at 100° C8.4 cSt
Viscosity Index213
NOTE: Must be stored above 32°F (14°C)
3121295– JLG Lift –6-7
SECTION 6 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Table 6-15. Exxon Univis HVI 26 Specs
Specific Gravity32.1
Pour Point-76°F (-60°C)
Flash Point217°F (103°C)
Viscosity
at 40° C25.8 cSt
at 100° C9.3 cSt
Viscosity Index376
NOTE: Mobil/Exxon recommends that this oil be checked
on a yearly basis for viscosity.
Table 6-14. UCon Hydrolube HP-5046
TypeSynthetic Biodegradable
Specific Gravity1.082
Pour Point, M ax-58 °F (-50 °C)
pH9.1
Viscosity
at 0° C (32° F)340 cSt (1600SUS)
at 40° C (104° F)46 cSt (215SUS)
at 65° C (150° F)22 cSt (106SUS)
Viscosity Index170
6-8– JLG Lift –3121295
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