Possible Failures In Pneumatic System And Guidelines For Troubleshooting - Belarus 1822.3 Operator's Manual

Clogging or crumpling of brake
control pipelines in one of the cir-
cuits or pipelines of main brake
cylinders leveling valves
Sticking of main cylinder pistons
(does not go back in its initial posi-
tion) due to piston cup and O-ring
expansion, resulting in closure of
compensating port by reason of
use of incorrect hydraulic-brake
fluid or ingress of mineral oil, pe-
troleum, kerosene, diesel fuel into
hydraulic-brake
Sticking of main cylinder pistons
due to piston cups expansion
On tractors
1822.3 /2022 .3» valve pistons
stick due to O-rings expansion
Wrong adjustment of parking brake
drive

7.9 Possible failures in pneumatic system and guidelines for troubleshooting

List of possible failures in pneumatic system and guidelines for troubleshooting are
shown in Table 7.9.
Table 7.9
Failure,
external manifestations, cause
Air leakage from pneumatic system
by the following reasons:
- undertightened or damaged pipe-
line, fittings nuts, and coupling
band
- damaged rubber gasket of cou-
pling head
- coupling head O-ring nut torque
got loose
- dirt entry under coupling head
valve
- contact of dust cover with cou-
pling head valve plug
- faulty adjustment of brake valve
actuator
Clean or replace pipelines. Circulate hydraulic-
brake fluid through the hydraulic system for for-
ward
1822.3 /2022 .3" for reverse
Rinse hydraulic drive system with hydraulic-brake
fluid. Replace damaged cups and O-ring in the
main and operating cylinders. Replace hydraulic-
brake fluid. Circulate hydraulic-brake fluid through
the hydraulic system for forward motion and on
tractors "BELARUS-1822.3 /2022 .3" for reverse
"BELARUS-
Low efficiency of parking brake drive
Adjust as specified in subsection 3.8.7 "Adjustment
of parking brake drive"
Increase of pressure in balloon is slow
Detect leakages and correct them by retorque of
junctions or replacement of damaged parts
Replace damaged gasket
Draw up the nut
Clean
Correct
Adjust brake valve actuator as indicated in clause
3.9.4.2 "Check and adjustment of single-line and
311
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motion and on
Troubleshooting
2022.3-0000010 OM
tractors "BELARUS-