Operation Description
52
or worn unevenly
(3) The air pressure of the two rear tires is not
the same
according to the specifications
Brakes do not
completely disengage
(1) Brake pedal free play is too small
(2) Brake return spring failure
(3) Inadequate clearance between brake shoes
(4) Brake pedal not returning
(1) Adjust
(2) Replace
(3) Adjust
(4) Check the return spring
2.19.5 Four-Wheel Drive System Faults and Troubleshooting
Table 2-8 Front Drive Axle Faults and Troubleshooting
Fault
Causes
Solutions
The front tire has
excessive wear
(1) The rim or the radial plate of the front
wheel is deformed
(2) The toe-in has been improperly adjusted
(3) The bearing pins of the steering knuckle
and the oil cylinder are severely worn
(4) The tire pressure is too low
(5) The front drive axle does not disengage
during operation
(6) The drive tread of the front tire is
mounted backwards
(1) Align the front wheel rim or
the radial plate
(2) Adjust the toe-in
(3) Replace the bearing pin(s)
(4) Inflate the tires according to
the specifications
(5) Disengage the front drive axle
or repair it
(6) Reinstall the tire according to
requirements
The front wheel shakes
(1) The fastening nuts and bolts for the
ball pins, oil cylinder and the steering arm
are loose
(2) The toe-in has been improperly adjusted
(3) The clearance of the bearing is too great,
or the bearing is severely worn
(4) The rim of the front wheel is
severely deformed
(1) Check and tighten
(2) Adjust the toe-in
(3) Adjust or replace the bearing
(4) Align or replace the front
wheel rim
Loud noise
(four wheel drive
tractors)
(1) Engagement trace of the front central
drive gear is bad
(2) The clearance of the central drive bearing
is too great or the bearing is damaged
(3) The differential axle is worn or damaged
(4) The planetary gear or gasket is worn
(5) The meshing of the final planetary gear
pair is bad
(1) Readjust the gear
meshing backlash
(2) Adjust or replace
(3) Replace the differential axle
(4) Replace the planetary gear or
the gasket
(5) Replace the planetary
drive gear
The drive shaft and
sleeve overheat
(1) The transmission shaft is severely bent
or deformed, creating friction
(1) Replace the transmission shaft
Loud noise in the
transfer case
(1) Using too high a gear
(2) The bearing or the gear is badly worn
(1) Put into low gear
(2) Replace