52
a. Gearbox bearings or needle
rollers excessively worn out or
damaged
b. Abnormal meshing of main drive
gears
c. Spline shafts and the splined hole of
gears worn out
2.
Trip-over stop
a. Shift fork excessively worn out or
deformed
b. Fork shaft locking spring weakened
c. Tooth profile or spline excessively
worn out
3.
Gearbox overheat
a. Too less the clearance of bearing or
gear backlash
b. Insufficient or excessive lubrication
oil
c. Lubricating oil deteriorated
Check and replace worn out bearings or
needle rollers with new ones
Examine gear meshing zone print and
backlash, adjust them as per stipulations
Replace worn out parts with new ones
Replace with a new one
Replace with a new one
Replace worn out parts with new ones
Readjust
Add or drain off lubricating oil to the
specified level
Renew lubricating oil
7.2.4
Traveling and steering system
Troubles & possible causes
Fixing methods
1. Front-wheel wobble
a. Excessive clearance of front
wheel bearing or kingpin bush
worn out excessively
b. Wrongly adjusted toe-in
c. Ball pin or its seat worn
out excessively
d. Pitman arm and ball pin fixing
nut become loose
2. Premature wearing of front
wheel tires
a. Wrongly adjusted toe-in
b. Front wheel pressure insufficient
Adjust bearing clearance or replace kingpin bush
with a new one
Readjust toe-in
Replace ball pin or its seat with a new one
Check and tighten the nut
Readjust toe-in
Inflate tires to specified pressure
Содержание DF254G2-6
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