JLG 150HAX ANSI Service Manual - Manual (Page 138)

SECTION 6 - SCHEMATICS
6-10 – JLG Lift – 3120679
.
Table 6-4.Chassis - Troubleshooting
TROUBLE PROBABLE CAUSE REMEDY
FRONT AXLE AREA
One or both front wheels will not steer.
Steering link or tie rod broken or
attaching hardware missing. Replace steering link, tie rod or
hardware as necessary.
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.
Hub attachment nut loose or missing. Secure or replace hub attachment nut cotter pin
as necessary.
Difficulty encountered when moving machine.
Load capacity exceeded. Reduce load. Apply loads only in
accordance with load capacity
indicator.
Machine being moved up too steep a grade. Remove machine from grade and check that
drive system operates
correctly.
Grade too steep. See Caution Placard on platform for specified
grades and sideslopes.
Drive wheel tire treads worn smooth. Replace tires as necessary and inflate to speci-
fied pressure.
System pressure too low. Re-adjust pressure.
REAR FRAME AXLE AREA.
One or both front wheels will not steer.
Steering link or tie rod broken or
attaching hardware missing. Replace steering link, tie rod or
hardware as necessary.
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.
Hub attachment nut loose or missing. Secure or replace hub attachment nut cotter pin
as necessary.