Belarus 1523, Operating Manual

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BELARUS- 1523/1523В /1523.3 /1523В.3 Troubleshooting
224
Trouble, symptoms Remedy
is disturbed due to hanging-up of the pis-
tons or wearing-out of the friction disks.
in clean diesel fuel; change the friction
disks, if necessary.
Front driving axle
Insufficient traction of the front driving axle
The drive clutch fails to transmit the torque:
Lack of pressure in the clutch booster. Dismantle the distributor and wash its parts.
Slipping of the drive clutch. Check and adjust the pressure in the hy-
draulic system of the transmission (11...12
kgf/cm
2
). Replace the worn-put plates.
Electrical circuit of the FDA control system
is faulty.
Locate and eliminate the fault.
Insufficient value of the torque transmitted by the clutch due to oil leakage in the
hydraulic system:
Wear-out of the rubber sealing rings. Replace the rings.
Wear-out of the piston rings and clutch
drum.
Replace the rings.
Wear-out of the mating surfaces between
the casing and the drum hub” and between
the drum and the piston.
Replace the worn-out parts.
Drive fails to operate in the automatic mode:
Maladjustment or failure of the switch of the
automatic engagement sensor.
Adjust the position of the switch or replace
the latter.
Excessive noise and heating in the main drive zone:
Excessive play in the main drive gear bear-
ings.
Adjust the gear bearings.
Incorrect mesh of the main drive gears. Check and, if necessary, adjust the mesh
against the contact spot.
Noise at the maximum angle of turning of the angle:
Incorrect operation mode of the FDA. The
FDA operates all the way in the forced en-
gagement mode.
Check the mode of engagement of the FDA
drive and set the switch to the OFF or
AUTO position.
Incorrect limit angle of turn of the wheels. Check and adjust the angle.
Knocking in the pivot during the motion:
Maladjustment of the pivot bearings. Check and adjust the bearings.
Knocking in the FDA in case of sudden turning of the wheels:
Excessive play in the pins of the steering
link and hydraulic cylinders of turning.
Check and adjust the pins.
Oil leakage through the collar of the main drive flange:
Wear-out or damage of the flange collar. Replace the worn-out parts.
Oil leakage through the breathers of the wheel reduction gears:
Too high oil level. Check the level and adjust the same as re-
quired.
Oil leakage through the collar of the driving gear of the wheel reduction gear
Excessive clearance in the gear bearings. Check and adjust the bearings.
Wear-out or damage of the collar. Replace the collar
Angular oscillations of the wheels:
Axial clearance in the bearings of the
wheel reduction gear pivots.
Check and adjust.