Belarus 820 - 7.2 Possible failures of the clutch and instructions for troubleshooting

80-0000010B OM
352
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
Troubleshooting
Clutch will not transfer full torque
(
“slippin
g
”
)
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
)
A
djust the clutch pedal free travel as described in
section 3.2.3.2 “Adjustment of coupling clutch pe-
dal free travel.”
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
A
djust the clutch pedal free travel as described in
section 3.2.3.2 “Adjustment of coupling clutch pe-
dal free travel .”
Driven disk linin
g
s are worn out Replace the linin
g
s or driven disk assembl
y
Oiling of linings of driven disks due
to ingress of oil into the dry com-
partment
Identify and eliminate the cause of ingress of oil
into the dry compartment
Insufficient force of compression
springs (shrinking of springs at
prolonged slipping and overheating
of the clutch
)
Replace the compression springs
Clutch couplin
g
will not full
y
disen
g
a
g
e
(
“clutch
g
rabs and shudders”
)
Clearance between the shifter’s
bearing and release lever is in-
creased (large clutch pedal free
travel
)
A
djust the clutch pedal free travel as described in
section 3.2.3.2 “Adjustment of coupling clutch pe-
dal free travel .”
Release levers do not adjoin even-
ly the release bearing
A
djust the position of release levers according to
section 3.2.2.4 “Adjustment of release levers of
couplin
g
clutch”
Excessive warping of driven disks 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 rectif
y
, replace the disks.
Dragging of driven disk hub on
transmission shaft splines
Grind the splines ensuring travel of the disk on the
transmission shaft
Transmission shaft support bear-
in
g
in fl
y
wheel is destro
y
ed
Replace the bearing
In
g
ress of oil into the dr
y
section of couplin
g
clutch
Wear of collar that seals the
c
r
ankshaft
Replace the colla
r
The bearing cover of drive shaft of
rear PTO drive during tractor cou-
plin
g
after repair is pressed out
Install a new cover o
r
set straight the old cove
r
Wear of collar of shifter bracke
t
Replace the colla
r