SECTION 3 - TROUBLESHOOTING
3-12
– JLG Lift –
3120686
Engine worn badly.
Rebuild engine.
Engine improperly timed.
Time engine.
Engine overheating.
Determine cause of overheating and remedy.
Dirty fuel filter.
Replace filter.
Fuel line pinched.
Replace fuel line.
Throttle governor not working properly.
Repair or replace governor.
Engine surges.
Governor not adjusted properly.
Correctly adjust governor.
Strong fuel odor.
Fuel tank overfilled.
Check fuel tank and immediately wipe up spilled
fuel.
Fuel tank damaged.
Drain all fuel from tank and remove tank for
replacement or repair.
Fuel line from tank damaged.
Replace fuel line.
Carburetor flooding.
Repair, replace or adjust carburetor.
FRONT FRAME AXLE AREA.
One or both wheels will not steer.
Steering link or tie rod broken or attaching hard-
ware missing.
Replace steering link, tie rod or hardware as nec-
essary.
One or both front wheels will not rotate or
rotate erratically.
Wheel hub or bearings damaged or not lubri-
cated.
Replace hub or bearings as necessary and
repack bearings with approved grease.
REAR FRAME AXLE AREA.
Difficulty encountered when moving
machine.
Load capacity exceeded.
Reduce load. Apply loads only in accordance
with load capacity indicator.
Flow divider sticking.
Repair or replace flow divider.
Machine being moved up too steep a grade.
Remove machine from grade and check that
drive system operates correctly.
Grade too steep.
See WARNING Placard on platform for specified
grades and sideslopes.
Towing valve not closed.
Close towing valve.
Table 3-4.Chassis Assembly - Troubleshooting
TROUBLE
PROBABLE CAUSE
REMEDY
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