Section G. Maintenance
Belarus – 90/92 Operating manual
87
Operation 18. Play of the steering
wheel
With engine in operation the steering
wheel play should not exceed 25°.
Otherwise, check and eliminate plays
in joints of hydraulic cylinders,
steering tie-rod.
Operation 19. Adjustment of wheel and
parking brakes. Adjustment of brake
valve and pressure regulator valve of
pneumatic system.
Adjust brakes in the following way:
a) Loosen check nut (3) of adjusting bolts
(2).
b) Screw in or out the bolt (2) so that full
travel of the right brake pedal of
wheel brake should be within
115...125 mm when applying effort of
120..130 N (12 kgf), and of the left
brake pedal by 5-20 mm less for
synchronous braking action in
interlocked position. Do not allow less
brakes pedal travel than is given
above, because it will lead to the
early wear and brakes overheating;
c) Draw up the safety nuts (3). Lock the
pedal with locking bar (1) and check
synchronism of right- and left-hand
brakes engagement during
movement (no more than 1 m
according to the mark).
If grease ingress in brake, it lead to disk
greasing and to decrease of force of
friction between their work faces,
brakes “do not hold”. In this case
disassembly the brake, remove oil leak
and rinse greasy disks with petrol, left
them dry for 5-8 min. Adjust pedals travel
after mounting.
120
+10
N
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