Belarus 892 - Possible Clutch Failures and Instructions for Their Troubleshooting

892-0000010B OM
288
7.2 Possible clutch failures and instructions for their troubleshooting
The list of possible clutch failures and instructions for their troubleshooting are shown in
Table 7.2.1.
Table 7.2.1
Defect, external manifestation,
cause
Troubleshooting
Clutch coupling does not transmit full torque (“clutch skidding")
There is no clearance between the
clutch release bearing and release lev-
ers – “clutch is half disengaged” (insuf-
ficient clutch pedal free travel)
Adjust the clearance as specified in clause
3.2.3.2 “Adjustment of clutch pedal free travel”
Partial engagement of clutch coupling
(clutch lever 33 fails to return to its ini-
tial position) when the clutch pedal is
released, due to failure in clutch opera-
tion control
Adjust of clutch pedal free travel as specified
in clause 3.2.3.2 “Adjustment of clutch pedal
free travel”
Clutch driven disk facings are worn out Change facings or driven disks assembled
Clutch driven disk facings are oiled-up
due to ingress of oil into the dry section
Detect and eliminate the cause of oil ingress
into the dry compartment
Poor compression spring force (spring
shrinks due to continuous skidding and
clutch overheating)
Change compression springs
Clutch coupling can not be fully disengaged (“clutch grabs and shudders”)
Clearance between the clutch release
bearing and release lever is increased
(increased clutch pedal free travel)
Adjust of clutch pedal free travel as specified
in clause 3.2.3.2 “Adjustment of clutch pedal
free travel”
Release levers do not adjoin evenly the
release bearing
Adjust the position of release levers as speci-
fied in clause 3.2.3.4 “Adjustment of release
levers of the clutch coupling”
Excessive warping of driven disks Check butt beats of driven disk facings against
hub spline external diameter – shall not ex-
ceed 0,8 mm on 165 mm radius. If the failure
can not be eliminated, replace the disks
Blocking of driven disk hub on trans-
mission shaft splines
Condition the surface of splines by grinding
ensuring free movement of disks on the trans-
mission shaft
Damaged transmission shaft support
bearing in the flywheel
Replace the bearing
Oil in dr
y
section of the clutch bod
y
Wear of the cup, sealing the crankshaft
Replace cup
The bearing cover of drive shaft of rear
PTO drive during tractor coupling after
repair is pressed out
Install a new cover or set straight the old cove
r
Wear of collar of shifter bracke
t
Replace the colla
r