Belarus 892 - Possible Failures of Brakes and Instructions for Their Troubleshooting

892-0000010B OM
291
7.6 Possible failures of brakes and instructions for their troubleshooting
The list of possible brake failures and guidelines for troubleshooting are shown in Table
7.6.1.
Table 7.6.1
Failure, external manifestation,
cause
Troubleshooting
Inefficient braking
Increased pedal free travel Adjust pedal free travel as specified in subsection
3.7.2.“Adjustment of service brakes control”
Presence of air in the hydraulic
brake control system
Bleed the hydraulic system with brake fluid
Sticking of brakes
Decreased pedal free travel
A
djust service brake pedals’ free travel as shown in
subsection 3.7.2 “Check/adjustment of service brake
control”
Incomplete return of the pedal to
its original position after braking
due to the weakening or breakage
of the pullback sprin
g
of the pedal
Replace the pullback spring of service brake pedal
Loss of power or breakage of pull-
back sprin
g
s of pressure disks
Replace the pullback springs of pressu
r
e disks
No grease in the slots of pressure
disks
Lubricate the slots of pressure disks with grease Li-
tol-24 GOST 21150-87 or similar
Presence of wear and tear signs on
working surfaces of pressure discs
Clean working surfaces of pressure discs
Evidence of wear and corrosion on
surfaces of slots
Polish the slots and then lubricate them with
grease
Uneven braking of left and right wheels
Faulty adjustment of service brakes Adjust pedal travel as indicated in subsection 3.7.2
« Adjustment of service brakes control»
Friction discs of one of the brakes
are worn-out
Replace friction discs.
Inefficiency of parking brake
Faulty adjustment of parking brake Adjust parking brake as indicated in subsection
3.7.4 «Adjustment of parking brake control»
Friction discs of parking brake are
worn-out
Replace friction discs of parking brake.
ATTENTION: MOST OFTEN, THE TRACTOR BRAKES BREAK DOWN DUE TO
USE OF TRAILED AND SEMI-TRAILED MACHINES THAT DO NOT EMPLOY BRAKES
INTERLOCKED WITH TRACTOR BRAKES. IT IS NOT ALLOWED TO USE TRAILED AND
SEMI-TRAILED MACHINES THAT DO NOT EMPLOY BRAKES INTERLOCKED WITH
TRACTOR BRAKES, IF THEIR WEIGHT EXCEEDS A HALF OF THE TRACTOR’S
WEIGHT!