Original Instructions - Keep this manual with the machine at all times.
Boom Lift Models
800S
860SJ
Prior to S/N 0300182742
ANSI
3121138
March 24, 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.
3121138– 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 –3121138
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.
3121138– 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 –3121138
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.
• 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.
3121138– 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. 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 –3121138
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)
3121138– 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 must be familiar with the surface before driving.
Do not exceed the allowable sideslope and grade while
driving.
1-6– JLG Lift –3121138
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.
3121138– 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 –3121138
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.
3121138– 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, dropoffs.
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.
3121138– 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-TRAINED SERVICE
TECHNICIAN AS A PERSON WHO HAS SUCCESSFULLY COMPLETED
THE JLG SERVICE TRAINING SCHOOL FOR THE SPECIFIC JLG PRODUCT
MODEL.
2-2– JLG Lift –3121138
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
3121138– 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.
5. “Walk-Around” Inspection – Refer to Figure 2-2. and
Figure 2-3.
6. Battery – Charge as required.
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
an area free of overhead and ground level obstructions.
Refer to Section 4 for more specific 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 –3121138
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Function Check
Perform the Function Check as follows:
1. From the ground control panel with no load in the platform:
a. Check that all guards protecting the switches or
locks are in place;
b. Operate all functions and check all limiting and cut-
out switches;
c. Check auxiliary power (or manual descent);
d. Ensure that all machine functions are disabled
when the Emergency Stop Button is activated.
2. From the platform control console:
a. Ensure that the control console is firmly secured in
the proper location;
b. Check that all guards protecting the switches or
locks are in place;
c. Operate all functions and check all limiting and cut-
out switches;
d. Ensure that all machine functions are disabled
when the Emergency Stop Button is pushed in.
3. With the platform in the transport (stowed) position:
a. Drive the machine on a grade, not to exceed the
rated gradeability, and stop to ensure the brakes
hold;
b. Check the tilt sensor alarm to ensure proper opera-
tion.
3121138– JLG Lift –2-5
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Figure 2-1. Basic Nomenclature - Sheet 1 of 2
2-6– JLG Lift –3121138
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
1. Steer Wheels
2. Drive Wheels
3. Lift Cylinder
4. Tower
5. Level Link
6. Upright
7. Base Boom Section
8. Mid Boom Section
9. Fly Boom Section
10. Boom Assembly
11. Power Track
12. Jib (If Equipped)
13. Platform
14. Platform Console
Figure 2-2. Basic Nomenclature - Sheet 2 of 2
3121138– JLG Lift –2-7
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
991
2
12
14
3
4
5
6
7
8
10
2
6
11
5
9
9
5
11
6
3
12
7
13
6
5
Figure 2-2. Daily Walk-Around Inspection - Sheet 1 of 2
2-8– JLG Lift –3121138
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 - Footswitch works prop-
erly, 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. Boom Sections/Uprights/Turntable - See Inspection
Note.
4. Swing Drive - No evidence of damage.
5. Wheel/Tire Assemblies - No loose or missing lug nuts,
proper inflation (pneumatic). Inspect for worn tread, cuts,
tears or other discrepancies. Inspect wheels for damage
and corrosion.
6. Drive Motor, Brake, and Hub - No evidence of leakage.
7. Hood Assemblies - See Inspection Note.
8. Auxiliary Hydraulic Pump - See Inspection Note.
9. All Hydraulic Cylinders - No visible damage; pivot pins
and hydraulic hoses undamaged, not leaking.
10. Turntable Bearing - Evidence of proper lubrication. No
evidence of loose bolts or looseness between bearing
and machine.
11. Tie Rod Ends and Steering Spindles - See Inspection
Note.
12. Horizontal and Capacity Limit Switches - Switches
operate properly.
13. Main Hydraulic Pump - See Inspection Note.
14. Platform Rotator - See Inspection Note.
Figure 2-3. Daily Walk-Around Inspection - Sheet 2 of 2
3121138– JLG Lift –2-9
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Figure 2-4. Horizontal and Capacity Limit Switches - Sheet 1 of 2
2.3 HORIZONTAL AND CAPACITY LIMIT
SWITCHES
2-10– JLG Lift –3121138
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Figure 2-5. Horizontal and Capacity Limit Switches - Sheet 2 of 2
ItemDescriptionOperation Characteristic
1Boom Capacity
Lengt h Switch
Activates platform capacity light to indicate the platform capacity at a designated boom length.
2Boom Extension
Switch
Reduces drive speed when boom reaches a designated length.
3Boom Capacity
Angle Switch
Activates platform capacity light to indicate the platform capacity at a designated boom height.
4Boom Elevation
Switch
Reduces drive speed when boom is raised above horizontal.
3121138– JLG Lift –2-11
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Figure 2-6. Limiting and Cut-Out Switches - Sheet 1 of 2
2-12– JLG Lift –3121138
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
Figure 2-7. Limiting and Cut-Out Switches - Sheet 2 of 2
3121138– JLG Lift –2-13
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 inches (15.2 cm) high block with ascension
ramp in front of left front wheel.
2. From platform control station, start engine
3. Place the Drive control lever to the forward position and
carefully drive machine up ascension ramp until left front
wheel is on top of block.
4. Carefully activate Swing control lever and position boom
over right side of machine.
5. With boom over right side of machine, place Drive control lever to Reverse and drive machine off of block and
ramp.
6. Have an assistant check to see that left front or right rear
wheel remains elevated in position off of ground.
7. 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.
2-14– JLG Lift –3121138
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
8. Place the 6 inches (15.2 cm) high block with ascension
ramp in front of right front wheel.
9. Place Drive control lever to Forward and carefully drive
machine up ascension ramp until right front wheel is on
top of block.
10. With boom over left side of machine, place Drive control
lever to Reverse and drive machine off of block and
ramp.
11. Have an assistant check to see that right front or left rear
wheel remains elevated in position off of ground.
12. 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 activate Drive to release
cylinders.
13. If lockout cylinders do not function properly, have qualified personnel correct the malfunction prior to any further operation.
3121138– JLG Lift –2-15
SECTION 2 - USER RESPONSIBILITIES, MACHINE PREPARATION, AND INSPECTION
NOTES:
2-16– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
SECTION 3. MACHINE CONTROLS AND INDICATORS
3.1 GENERAL
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.
3.2 CONTROLS AND INDICATORS
NOTE: This machines is equipped with control panels that use
symbols to indicate control functions. Refer to 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
(See Figure 3-1., Ground Control Station - 800S and Figure 3-1.,
Ground Control Station - 860SJ)
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.
NOTE: If equipped, the Function Enable switch must
be held down in order to operate Telescope,
Swing, Lift, Jib Lift, Platform Level Override,
and Platform Rotate functions.
3121138– JLG Lift –3-1
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1. Indicator Panel.
The LED Indicator Panel contains indicator lights that
signal problem conditions or functions operating during
machine operation.
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.
2. Telescope Control.
Provides extension and retraction of the boom, when
positioned to IN or OUT.
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 PLATFORM/GROUND SELECT switch in the center
position, power is shut off to controls at both operating
stations.
6. Hourmeter.
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 hourmeter registers up to 9,999.9 hours
and cannot be reset.
7. 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.
3-2– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1706914 A
12345
6
7
8
10
11
OR
1. Indicator Panel
2. Telescope
3. Swing
4. Lift
5. Platform/Ground Select Switch
6. Hourmeter
7. Power/Emergency Stop
8. Engine Star t/Auxiliary Power
or
E n gi n e S t ar t / A ux i li a r y P o we r /F u nc t io n En a b le
9. N/A
10. Platform Leveling Override
11. Platform Rotate
Figure 3-1. Ground Control Station - 800S
3121138– JLG Lift –3-3
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1706915 A
123
4
5
6
7
8
9
10
11
OR
Figure 3-1. Ground Control Station - 860SJ
1. Indicator Panel
2. Telescope
3. Swing
4. Lift
5. Platform/Ground Select Switch
6. Hourmeter
7. Power/Emergency Stop
8. 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
9. Ar ticulating Jib Boom
10. Platform Leveling Override
11. Platform Rotate
3-4– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
8. 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.)
9. Articulating Jib Boom. (If Equipped)
This switch provides raising and lowering of the jib.
10. Platform Leveling Override.
A three position switch allows the operator to compensate for any difference in the automatic self leveling system.
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR
SLIGHT LEVELING OF THE PLATFORM. INCORRECT USE COULD CAUSE
THE LOAD/OCCUPANTS TO SHIFT OR FALL. FAILURE TO DO SO COULD
RESULT IN DEATH OR SERIOUS INJURY.
11. 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.
3121138– JLG Lift –3-5
SECTION 3 - MACHINE CONTROLS AND INDICATORS
Ground Control Indicator Panel
(See Figure 3-2. and Figure 3-3.)
1. Battery Charging Indicator
Indicates a problem in the battery or charging circuit,
and service is required.
2. Low Engine Oil Pressure Indicator.
Indicates that engine oil pressure is below normal and
service is required.
3. High Engine Coolant Temperature Indicator (Ford)
Indicates that engine coolant temperature is abnormally
high and service is required.
4. Engine Oil Temperature Indicator (Deutz).
Indicates the temperature of the engine oil, which also
serves as engine coolant, is abnormally high and service is required.
5. Malfunction Indicator
Indicates that the JLG Control System has detected a
malfunction and a Diagnostic Trouble Code has been
set. 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
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
Indicates the glow plugs are operating. After turning on
ignition, wait until light goes out before cranking engine.
3-6– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
7
64321
811
10
9
1. Batter y Charging
2. Low Engine Oil Pressure
3. High Engine Coolant Temp.
4. High Engine Oil Temp.
5. Not Used
6. Low Fuel
7. Glow Plug
8. Platform Overload
9. Hyd. Filter Bypass
10. Charge Pump Filter
11. Engine Air Filter
Figure 3-2. Ground Control Indicator Panel - Sheet 1 of 2
Prior to S/N 0300099882
3121138– JLG Lift –3-7
SECTION 3 - MACHINE CONTROLS AND INDICATORS
12
S/N 0300099882 to S/N 0300182742
1. Battery Charging
2. Engine Oil Pressure
3. Engine Water Temp.
4. Engine Oil Temp.
5. Malfunction Indicator
6. Low Fuel
7. Glow Plug
8. Platform Overload
9. Not Used
10. Not Used
11. Not Used
12. Drive and Steer Disable
Figure 3-3. Ground Control Indicator Panel - Sheet 2 of 2
3-8– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
8. Platform Overload Indicator (If Equipped)
Indicates the platform has been overloaded.
9. Hydraulic Oil Filter Indicator (Prior to S/N 85332)
Indicates the return oil filter is too restrictive and in the
bypass mode and needs to be replaced.
10. Charge Pump Oil Filter Indicator (Prior to S/N 85332)
Indicates that charge pump filter is too restrictive and
needs to be replaced.
11. Engine Air Filter Indicator (Prior to S/N 85332)
Indicates that the air filter is too restrictive and needs to
be replaced.
12. Drive and Steer Disable Indicator (If equipped)
Indicates the Drive and Steer Disable function has been
activated.
Platform Station
(See Figure 3-4., Platform Control Console)
1. Power/Emergency Stop
A two-position red mushroom shaped switch furnishes
power to PLATFORM Controls when pulled out (on).
When pushed in (off), power is shut off to the platform
functions.
Within about 2 seconds of pulling the switch out, the
machine will perform a diagnostic check of the various
electrical circuits, and if everything is OK, the platform
alarm will beep once. During this time the lights on the
indicator panel will also blink once as a bulb check.
2. Horn
If pressed, this switch supplies power to the horn.
3121138– JLG Lift –3-9
SECTION 3 - MACHINE CONTROLS AND INDICATORS
NOTE: MAIN LIFT, SWING, and DRIVE control levers are spring-
loaded and will automatically return to neutral (OFF) position when released.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVERS OR TOGGLE SWITCHES CONTROLLING PLATFORM
MOVEMENT DO NOT RETURN TO THE OFF OR NEUTRAL POSITION
WHEN RELEASED.
3. Main Lift/Swing Controller
An infinitely 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: To operate the Main Lift/Swing Joystick, pull up on the
locking ring below the handle.
4. Main Telescope Control
This control allows extension and retraction of the main
boom.
5. Drive/Steer
The DRIVE joystick provides for driving either forward or
backward. The controller is ‘ramped’ to allow variable
drive speed.
Steering is controlled by a thumb operated switch on
top of the joystick.
NOTE: To operate the Drive Joystick, pull up on the locking ring
below the handle.
NOTE: When 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 cut out 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 BOOM IS ABOVE HORIZONTAL.
3-10– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
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 (860SJ)
11. Fuel Select
12. Lights
13. Steer Select
14. Engine Start / Aux Power
15. Light Panel
Figure 3-4. Platform Control Console
3121138– JLG Lift –3-11
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1702567 A
1702676-B
1704997
1705170 A
1702938
7
139
215
5
4
10 121781863
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 (860SJ)
11. Fuel Select
12. Lights
13. Steer Select
14. Engine Start / Aux Power
15. Light Panel
16. Drive Orientation Override
17. Soft Touch Override
18. Soft Touch Indicator
Figure 3-5. Platform Control Console - w/Drive Orientation
3-12– JLG Lift –3121138
6. Function Speed Control
SECTION 3 - MACHINE CONTROLS AND INDICATORS
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.
7. Drive Speed/Torque Select
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 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 maximum displacement.
8. Platform Rotate
This switch allows the operator to rotate the basket to
the left or right.
ONLY USE THE PLATFORM LEVELING OVERRIDE FUNCTION FOR
SLIGHT LEVELING OF THE PLATFORM. INCORRECT USE COULD CAUSE
THE LOAD/OCCUPANTS TO SHIFT OR FALL. FAILURE TO DO SO COULD
RESULT IN DEATH OR SERIOUS INJURY.
9. 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.
10. Articulating Jib Boom (860SJ)
Push forward to lift up, pull back to lift down. Variable lift
speed is using the Function Speed Control.
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.
3121138– JLG Lift –3-13
SECTION 3 - MACHINE CONTROLS AND INDICATORS
12. Lights. (If Equipped)
This switch operates control console panel lights and
head lights if the machine is so equipped. The 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 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.
To re-synchronize the front and rear axles, position the
rear drive wheels to the forward drive position by select-
ing either crab or compound steer, then select front
steer (center switch position) to operate the normal
steering function.
14. Start/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.
15. Indicator Panel.
The LED Indicator Panel contains indicator lights that
signal problem conditions or functions operating during
machine operation.
3-14– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
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.
Platform Control Indicator Panel
(See Figure 3-7., Platform Light Panel - w/Drive Orientation)
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.
3121138– JLG Lift –3-15
SECTION 3 - MACHINE CONTROLS AND INDICATORS
1. Level System Fault Indicator
Indicates a fault in the electronic leveling system. The
fault indicator will flash and an alarm sound. All functions will default to creep if the boom is extended more
than 20 inches (51 cm) or elevated above horizontal.
IF THE LEVEL SYSTEM FAULT INDICATOR IS ILLUMINATED, SHUT
DOWN THE MACHINE, RECYCLE THE EMERGENCY STOP, AND RESTART
THE MACHINE. IF THE FAULT PERSISTS, RETURN THE PLATFORM TO
THE STOWED POSITION, USING MANUAL LEVELING AS REQUIRED,
AND HAVE LEVELING SYSTEM REPAIRED.
2. AC Generator (Green)
Indicates the generator is in operation.
3. Overload Indicator. (If equipped)
Indicates the platform has been overloaded.
4. Capacity Indicator
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.
5. 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.
3-16– JLG Lift –3121138
SECTION 3 - MACHINE CONTROLS AND INDICATORS
6. Glow Plug Indicator
Indicates the glow plugs are operating. After turning on
ignition, wait until light goes out before cranking engine.
7. 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.
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.
10. Malfunction Indicator
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.
11. Cable Service Indicator (If Equipped)
When illuminated, the light indicates the boom cables
are loose or broken and must be repaired or adjusted
immediately.
IF THE CABLE SERVICE INDICATOR IS ILLUMINATED, RETURN THE
PLATFORM TO THE STOWED POSITION, SHUT DOWN THE MACHINE,
AND HAVE THE BOOM CABLES INSPECTED.
12. 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.
13. 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.
3-20– JLG Lift –3121138
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 platform, if:
1. Machine is positioned on a smooth, firm and level surface.
2. Load is within manufacturer’s rated capacity.
3. All machine systems are functioning properly.
4. Proper tire pressure.
5. Machine is as originally equipped from JLG.
Stability
Machine stability is based on two (2) conditions which are
called FORWARD and BACKWARD stability. The machine’s
position of least FORWARD stability is shown in (See Figure
4-2.), and its position of least BACKWARD stability is shown
in (See Figure 4-1.)
3121138– JLG Lift –4-1
SECTION 4 - MACHINE OPERATION
TO AVOID FORWARD OR BACKWARD TIPPING, DO NOT OVERLOAD
MACHINE OR OPERATE THE MACHINE ON AN OUT-OF-LEVEL SURFACE.
4.3ENGINE OPERATION
NOTE: Initial starting should always be performed from the
Ground Control station.
Starting Procedure
IF ENGINE FAILS TO START PROMPTLY, DO NOT CRANK FOR AN
EXTENDED TIME. SHOULD ENGINE FAIL TO START AGAIN, ALLOW
STARTER TO “COOL OFF” FOR 2-3 MINUTES. IF ENGINE FAILS AFTER
SEVERAL ATTEMPTS, REFER TO ENGINE MAINTENANCE MANUAL.
NOTE: Diesel engines only: After turning on ignition, operator
must wait until glow plug indicator light goes out before
cranking engine.
1. Turn key of SELECT switch to GROUND. Position
POWER/EMERGENCY STOP switch to ON, then push
the ENGINE START switch until engine starts.
ALLOW ENGINE TO WARM-UP FOR A FEW MINUTES AT LOW SPEED
BEFORE APPLYING ANY LOAD.
2. After engine has had sufficient time to warm up, shut
engine off.
3. Turn SELECT switch to PLATFORM.
4. From Platform, pull POWER/EMERGENCY STOP switch
out, then push the ENGINE START switch 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 –3121138
SECTION 4 - MACHINE OPERATION
Figure 4-1. Position of Least Backward Stability
ROTATE PLATFORM
90 DEGREES
BOOM FULLY
ELEVATED
TU RN TAB LE RO TATE D
90 DEGREES FROM
STOWED POSITION
MACHINE WILL TIP OVER IN
THIS DIRECTION IF OVERLOADED
OR OPERATED
ON AN OUT-OF-LEVEL SURFACE
Shutdown Procedure
IF AN ENGINE MALFUNCTION CAUSES AN UNSCHEDULED SHUTDOWN,
DETERMINE THE CAUSE AND CORRECT IT BEFORE RESTARTING THE
ENGINE.
1. Remove all load and allow engine to operate at low
speed for 3-5 minutes; this allows further reduction of
internal engine temperature.
2. Push POWER/EMERGENCY STOP switch in.
3. Turn MASTER switch to Off.
Refer to Engine Manufacturer’s manual for detailed information.
.
3121138– JLG Lift –4-3
SECTION 4 - MACHINE OPERATION
Figure 4-2. Position of Least Forward Stability
MACHINE WILL TIP OVER IN
THIS DIRECTION IF OVERLOADED
OR OPERATED
ON AN OUT-OF-LEVEL SURFACE
TELESCOPE
FULLY EXTENDED
TURNTABLE ROTATED
90 DEGREES FROM
STOWED POSITION
4-4– JLG Lift –3121138
SECTION 4 - MACHINE OPERATION
4.4TRAVELING (DRIVING)
NOTE: When the upper boom is raised approximately 11 degrees
above horizontal, the high drive function will automatically
be in low drive.
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.
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.
3121138– JLG Lift –4-5
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.
This machine is equipped with a Drive Orientation Indicator.
The yellow light on the platform control console indicates
that the boom is swung beyond the rear drive tires and the
machine may Drive/Steer in the opposite direction from the
movement of the controls. If the indicator is illuminated,
operate the Drive function in the following manner:
1. Match the black and white direction arrows on both platform control panel and the chassis to determine the
direction the machine will travel.
2. Push and release the Drive Orientation Override switch.
Within 3 seconds, slowly move the Drive control toward
the arrow matching the intended direction of machine
travel. The indicator light will flash during the 3 second
interval until the drive function is selected.
4.5STEERING
Position thumb switch on Drive/Steer controller to RIGHT for
steering right, or to LEFT for steering left.
4-6– JLG Lift –3121138
SECTION 4 - MACHINE OPERATION
Figure 4-3. Grade and Side Slopes
3121138– JLG Lift –4-7
SECTION 4 - MACHINE OPERATION
4.6PLATFORM
Platform Level Adjustment
During normal operation of the machine, the platform will
automatically maintain it’s position. To manually Level Up or
Down - Position the Platform/Level control switch Up or
Down and hold until the desired platform position is
obtained.
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.
4.7BOOM
DO NOT SWING OR RAISE BOOM ABOVE HORIZONTAL WHEN MACHINE
IS OUT OF LEVEL.
DO NOT DEPEND ON TILT ALARM AS A LEVEL INDICATOR FOR THE
CHASSIS.
TO AVOID TIP OVER, LOWER PLATFORM TO GROUND LEVEL. THEN
DRIVE MACHINE TO A LEVEL SURFACE BEFORE RAISING BOOM.
TO AVOID SERIOUS INJURY, DO NOT OPERATE MACHINE IF ANY CONTROL LEVER OR TOGGLE SWITCH CONTROLLING PLATFORM MOVEMENT DOES NOT RETURN TO THE ‘OFF’ OR NEUTRAL POSITION WHEN
RELEASED.
IF THE PLATFORM DOES NOT STOP WHEN A CONTROL SWITCH OR
LEVER IS RELEASED, REMOVE FOOT FROM FOOTSWITCH OR USE
EMERGENCY STOP SWITCH TO STOP THE MACHINE.
4-8– JLG Lift –3121138
SECTION 4 - MACHINE OPERATION
Swinging the Boom
To swing boom, use SWING control to select RIGHT or LEFT
direction.
WHEN SWINGING THE BOOM MAKE SURE THERE IS AMPLE ROOM FOR
THE BOOM TO CLEAR SURROUNDING WALLS, PARTITIONS AND EQUIPMENT.
Raising and Lowering the Boom
To raise or lower the Boom, use Boom Lift control to select
UP or DOWN movement.
4.8FUNCTION SPEED CONTROL
This control affects the speed of all boom functions and Platform Rotate. When in the CCW maximum position, Drive is
placed in creep speed.
4.9OSCILLATING 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.
3121138– JLG Lift –4-9
SECTION 4 - MACHINE OPERATION
Figure 4-4. Drive Disconnect Hub
4.10 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.
3. Reconnect the drive hubs by inverting the disconnect
cap when towing is complete.
4-10– JLG Lift –3121138
SECTION 4 - MACHINE OPERATION
4.11 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 towbar and connect to towing vehicle
.
3. Disconnect drive hubs by inverting disconnect cap.
Refer to Figure 4-4., Drive Disconnect Hub.
3121138– JLG Lift –4-11
SECTION 4 - MACHINE OPERATION
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 towbar from towing vehicle and place it in
the stowed position as shown below. The machine is
now in the driving mode.
4-12– JLG Lift –3121138
SECTION 4 - MACHINE OPERATION
4.12 SHUT DOWN AND PARK
To shut down and park the machine, the procedures are as
follows:
1. Drive machine to a reasonably well protected area.
2. Ensure boom is lowered over rear drive axle.
3. Push in the Emergency Stop at Platform Controls.
4. Push in the Emergency Stop at Ground Controls. Posi-
tion Platform/Ground Select switch to center OFF.
5. If necessary, cover Platform Controls to protect instruction placards, warning decals and operating controls
from hostile environment.
4.13 LIFTING AND TIE DOWN
Lifting
1. Call JLG Industries or weigh the individual unit to find
out the Gross Vehicle Weight.
2. Place the boom in the stowed position with the turntable
locked.
3. Remove all loose items from the machine.
4. Properly adjust the rigging to prevent damage to the
machine and so the machine remains level.
3121138– JLG Lift –4-13
SECTION 4 - MACHINE OPERATION
Tie Down
WHEN TRANSPORTING THE MACHINE, THE BOOM MUST BE FULLY
LOWERED INTO THE BOOM REST.
1. Remove all loose items from the machine.
2. When transporting an 800S/860SJ a step-deck or sin-
gle-drop trailer is required. To avoid damage to the platform and to obtain proper weight distribution, load the
machine onto the trailer as follows;
a. Position the boom over the front wheels.
DO NOT SWING THE BOOM WHIT THE MACHINE POSITIONED ON A
TRAILER. TIPOVER MAY RESULT
b. Place the boom in the stowed position with the turn-
table locked.
DRIVE AND STEER CONTROLLERS WILL BE REVERSED WHEN THE
BOOM IS POSITIONED OVER THE FRONT WHEELS.
c. Drive it onto the trailer with the boom and platform
positioned towards the truck. Refer to Figure 4-5.,
Typical 800S/860SJ Transport.
3. Secure the chassis and the platform using straps or
chains of adequate strength.