Belarus 820 - 7.3 Possible failures of the gearbox and instructions for troubleshooting; 7.4 Possible failures of the rear axle and instructions for troubleshooting

80-0000010B OM
353
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
Troubleshooting
It is difficult to en
g
a
g
e or disen
g
a
g
e
g
ears, nois
y
g
ear shiftin
g
Incomplete disengagement of the
clutch (clutch disengages incom-
pletel
y
)
Identify and eliminate the cause, as described in
subsection 7.2 “Possible clutch failures and in-
structions for troubleshootin
g
”
Parts a
r
e worn out Replace worn parts
Increased noise
Not enough oil in the transmission Refill oil up to the required level mark as per the oil
level
g
au
g
e
Wear or damage of bearings and
other transmission components
Replace worn-out bearings and other damaged
parts
The engine fails to start when the gear shifting lever is set in neutral posi-
tion or starts when a
g
ear is en
g
a
g
ed
The senso
r
of engine start-up lock
is not adjusted
A
djust the sensor of engine start-up lock 13 (figure
3.3.1) by installing the necessary number of adjust-
in
g
shims 12
The sensor of engine start-up lock
is out of orde
r
Replace the sensor of engine start-up loc
k
One of the ran
g
es will not en
g
a
g
e or disen
g
a
g
ed on its own
Wear of parts Split the tracto
r
, demount the gearbox and
r
eplace
the worn out parts in it
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
Troubleshooting
Increased noise of master drive
Improper adjustment of gear en-
gagement of the master drive
based on tooth-contact and side
clearance
- adjust gear engagement of the master drive bas-
ing on tooth-contact;
- adjust side clearance in the engagement of the
master pair of gears.
Improper adjustment of taper bear-
in
g
s
Adjust bearing preload
Rear axle differential lock fails
Jams, abutments, impurities, etc.
in the connections of the rear axle
differential lock control mecha-
nism.
Eliminate the failures
Grease-stained DL clutch disks Stop oil leaka
g
e, rinse the disks