Possible Failures Of The Gearbox And Instructions For Troubleshooting; Possible Failures Of The Rear Axle And Instructions For Troubleshooting - Belarus 80.1 Operation Manual

7.3 Possible failures of the gearbox and instructions for troubleshooting

A list of possible failures in gearbox and instructions for their troubleshooting are
given in Table 7.3.1.
Table 7.3.1
Failure,
external manifestation, cause
It is difficult to engage or disengage gears, noisy gear shifting
Incomplete disengagement of the
clutch (clutch disengages incom-
pletely)
Parts are worn out
Not enough oil in the transmission
Wear or damage of bearings and
other transmission components
The engine fails to start when the gear shifting lever is set in neutral posi-
tion or starts when a gear is engaged
The sensor of engine start-up lock
is not adjusted
The sensor of engine start-up lock
is out of order
One of the ranges will not engage or disengaged on its own
Wear of parts

7.4 Possible failures of the rear axle and instructions for troubleshooting

A list of possible failures in rear axle and instructions for their troubleshooting are
given in Table 7.4.1.
Table 7.4.1
Failure,
external manifestation, cause
Improper adjustment of gear en-
gagement of the master drive
based on tooth-contact and side
clearance
Improper adjustment of taper bear-
ings
Jams, abutments, impurities, etc.
in the connections of the rear axle
differential lock control mecha-
nism.
Grease-stained DL clutch disks
Identify and eliminate the cause, as described in
subsection 7.2 "Possible clutch failures and in-
structions for troubleshooting"
Replace worn parts
Increased noise
Refill oil up to the required level mark as per the oil
level gauge
Replace worn-out bearings and other damaged
parts
Adjust the sensor of engine start-up lock 13 (figure
3.3.1) by installing the necessary number of adjust-
ing shims 12
Replace the sensor of engine start-up lock
Split the tractor, demount the gearbox and replace
the worn out parts in it
Increased noise of master drive
- adjust gear engagement of the master drive bas-
ing on tooth-contact;
- adjust side clearance in the engagement of the
master pair of gears.
Adjust bearing preload
Rear axle differential lock fails
Eliminate the failures
Stop oil leakage, rinse the disks
353
80-0000010B OM
Troubleshooting
Troubleshooting