Belarus 1523, Operating Manual

Page: 229 / 312

BELARUS- 1523/1523В /1523.3 /1523В.3 Troubleshooting
218
Trouble, symptoms Remedy
Insufficiently full travel of the clutch lever
(45) (see Section “Construction and Opera-
tion of Tractor Components”, figure in item
“Clutch drive”) when the clutch pedal is
stepped on completely.
Ensure that the free travel of the clutch lever
and, respectively, hydraulic booster stroke
when stepping completely on of the clutch
pedal would be at least 24 mm
Maladjustment of the release levers. Adjust the position of the release levers.
Increased warpage of the driven disks. Check the end wobbling of the driven plate
liners relatively to the outer diameter of the
hub splines which shall be not more than
0.8 mm on the radius 165 mm.
If the plates cannot be repaired, they shall
be replaced.
Jamming of the driven plate boss on the
transmission shaft splines.
Clean the splines to ensure the free travel of
the plates on the transmission shaft.
The transmission shaft support bearing in
the transmission is broken.
Replace the bearing.
The clutch lever (45) (see Section “Construction and Operation of Tractor Compo-
nents”, figure in item “Clutch drive”) fails to return to the initial position on releasing
the clutch pedal:
Absence of clearance between the master
cylinder piston and its lifter during the for-
ward and reverse motion.
Perform the adjustment (see Section “Con-
struction and Operation of Tractor Compo-
nents”, item “Clutch Control Adjustment”).
Absence of clearance between the piston
lifter of the master cylinder (30) (see Sec-
tion “Construction and Operation of Tractor
Components”, figure in item “Clutch drive”)
and piston lifter of the hydraulic booster
(39).
Perform the adjustment (see Section “Con-
struction and Operation of Tractor Compo-
nents”, item “Clutch Control Adjustment”).
Jamming of the master cylinder piston
(which fails to return to the initial position)
for the forward motion (10) (see Section
“Construction and Operation of Tractor
Components”, figure in item «Clutch
drive») and for the reverse (19) due to
swelling of cups and O-rings that leads to
blocking the compensation holes “ А ” (see
Section “Construction and Operation of
Tractor Components”, item “Clutch drive”,
figure “Master cylinder”)
Using the brake fluid of improper mark or
presence of mineral oil, petrol, kerosene or
diesel fuel in the brake fluid.
Flush carefully the whole hydraulic drive
system with brake fluid. Replace the dam-
aged cups and O-rings in the master cylin-
ders, service cylinder and tap. Change the
brake fluid. Pump the brake fluid through
the hydraulic system to bleed air in the
forward and reverse motion.
Jamming of the master cylinder piston due
to swelling of the collar.
Jamming of the tap piston due to swelling
of the O-ring.
Impeded motion of the hydraulic booster
piston.
Replace the hydraulic booster.
Lack of coaxiality of the hydraulic booster,
master cylinder and lever (45) (see Section
“Construction and Operation of Tractor
Components”, figure in item “Clutch drive”).
Ensure the coaxiality of the hydraulic
booster, master cylinder and lever (45)
(see Section “Construction and Operation
of Tractor Components”, figure in item