Possible Failures Of The Clutch And Instructions For Troubleshooting - Belarus 80.1 Operation Manual

7.2 Possible failures of the clutch and instructions for troubleshooting

The list of possible failures of the clutch and instructions for their troubleshooting
are given in table 7.2.1.
Table 7.2.1
Failure,
external manifestation, cause
There is no gap between the shift-
er's bearing and the release levers
- "semi-disengaged clutch" (in-
sufficient free travel of the clutch
pedal)
Coupling clutch does not engage
in full (the clutch lever does not re-
turn to its initial position) when re-
leasing the clutch pedal due to
malfunction of clutch control
Driven disk linings are worn out
Oiling of linings of driven disks due
to ingress of oil into the dry com-
partment
Insufficient force of compression
springs (shrinking of springs at
prolonged slipping and overheating
of the clutch)
Clutch coupling will not fully disengage ("clutch grabs and shudders")
Clearance between the shifter's
bearing and release lever is in-
creased (large clutch pedal free
travel)
Release levers do not adjoin even-
ly the release bearing
Excessive warping of driven disks
Dragging of driven disk hub on
transmission shaft splines
Transmission shaft support bear-
ing in flywheel is destroyed
Ingress of oil into the dry section of coupling clutch
Wear of collar that seals the
crankshaft
The bearing cover of drive shaft of
rear PTO drive during tractor cou-
pling after repair is pressed out
Wear of collar of shifter bracket
Clutch will not transfer full torque ("slipping")
Adjust the clutch pedal free travel as described in
section 3.2.3.2 "Adjustment of coupling clutch pe-
dal free travel."
Adjust the clutch pedal free travel as described in
section 3.2.3.2 "Adjustment of coupling clutch pe-
dal free travel ."
Replace the linings or driven disk assembly
Identify and eliminate the cause of ingress of oil
into the dry compartment
Replace the compression springs
Adjust the clutch pedal free travel as described in
section 3.2.3.2 "Adjustment of coupling clutch pe-
dal free travel ."
Adjust the position of release levers according to
section 3.2.2.4 "Adjustment of release levers of
coupling clutch"
Check the face run-out of driven disk linings
against the outer diameter of hub splines – it shall
make not more than 0.8 mm on the radius of 165
mm. If impossible to rectify, replace the disks.
Grind the splines ensuring travel of the disk on the
transmission shaft
Replace the bearing
Replace the collar
Install a new cover or set straight the old cover
Replace the collar
Troubleshooting
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80-0000010B OM