Belarus 2022.6 Operator's Manual page 196

Table 6.7.1 continued
Failure, external manifestation,
cause
There is no pedal free travel (no
clearance between the piston and
the main cylinder piston follower).
Sticking of main brake cylinder pis-
tons (fail to go back in their initial
position) due to piston cup and O-
ring expansion, resulting in closure
of compensating openings be-
cause of using incorrect hydraulic
brake fluid or because of ingress of
mineral oil, petroleum, kerosene,
diesel fuel into the hydraulic brake
system
Sticking of operating brake cylinder
pistons due to piston cups expan-
sion
Clogging of compensating open-
ing in the main cylinder
Weakening or breakage of pres-
sure discs pullback springs
Presence of wear and tear signs
on working surfaces of pressure
discs
Presence of wear and tear signs
on dimple surfaces of pressure
discs
Faulty adjustment
brakes
Malfunctioning of leveling valves in
main brake cylinders (with mount-
ed cylinders "CARLISLE")
Malfunctioning of leveling valve in
main brake cylinders (with mount-
ed cylinders "FENOX")
Clogging or crumpling of brake
control pipelines in one of the cir-
cuits or pipeline of leveling valves
in main brake cylinders "CAR-
LISLE"
Frictional brake discs wear and
tear
Improper adjustment of the parking
brake
Sticking of brakes
Adjust pedal free travel
Rinse the hydraulic drive system with hydraulic
brake fluid. Replace damaged cups and O-rings in
the main and operating cylinders. Replace hydrau-
lic brake fluid. Then bleed the hydraulic system
with brake fluid
Rinse carefully the hydraulic drive system with hy-
draulic brake fluid. Replace damaged cups and O-
ring in operating cylinders. Replace hydraulic brake
fluid. Then bleed the hydraulic system with brake
fluid
Unclog the compensating port of the main cylinder
and bleed the hydraulic system with brake fluid
Replace pullback springs of pressure discs
Clean working surfaces of pressure discs
Replace pressure discs
Uneven braking of left and right wheels
of service Make adjustments
Disconnect the tube connecting two main brake
cylinders, turn back fittings and dismount leveling
valves. Replace worn-out parts. Then bleed the
hydraulic system with brake fluid
Replace the leveling valve. Bleed the hydraulic
system with brake fluid
Clean or replace pipelines. Bleed the hydraulic
system with brake fluid
Replace frictional discs
Inefficiency of parking brake operability
Adjust the parking brake
196
2022.6-0000010 OM
Troubleshooting