Belarus 1523, Руководство по эксплуатации

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BELARUS- 1523/1523В /1523.3 /1523В.3 Troubleshooting
232
Trouble, symptoms Remedy
Air leakage through the compressor valves. Remove the compressor head and clean
the valves and their seats from coke depos-
its.
Replace the damaged parts.
Sticking or run-out of compressor piston
rings
Remove the head and cylinder of the com-
pressor, clean the rings from coke deposits
and replace them as necessary.
Pressure in the air bottle drops quickly when the engine is stopped:
Air leakage through coupling elements of
the pneumatic system.
Eliminate the leakage.
On stepping on the brake pedals, the air pressure in the bottle drops quickly:
The inlet valve is warped, clogged or dam-
aged.
Eliminate the warpage, clean or replace the
valve.
The brake valve diaphragm is damaged. Change the diaphragm.
Insufficient air pressure in the bottle:
Air leakage. Eliminate the air leakage.
The pressure regulator operation is dis-
turbed.
Remove the pressure regulator and send it
to the workshop for repair.
The suction or pressure valve of the com-
pressor is faulty.
Clean the compressor valves from coke
deposits or replace them, if they are ex-
cessively worn-out.
Excessive wear of the piston rings, jam-
ming of the compressor rings.
Clean the compressor rings from coke de-
posits or replace them.
Excessive ejection of oil to the pneumatic system by the compressor:
Jamming or wear-out of the compressor pis-
ton rings.
Clean the compressor rings from coke de-
posits or replace them.
The pressure regulator switches the compressor on to idling at the pressure of
less than 0.77...0.80 MPa (7.7...8.0 kgf/cm
2
) and into action – at less than 0.65 MPa
(6.5 kgf/cm
2
) or at more than 0.70 MPa (7.0 kgf/cm
2
):
Clogging of the chambers, pockets and
channels of the pressure regulator.
Clean and wash the pressure regulator.
The adjusting cap is uncottered. Adjust the pressure of switching the com-
pressor ON/OFF.
Loss of elasticity, damage or rupture of rub-
ber parts; irreparable slackening of springs.
Change the damaged parts.
Warpage or hanging-up of the pressure
regulator operating members.
Check the valves for sliding ability; lubricate,
if necessary.
The pressure regulator is frequently operates (turns the compressor ON) without
taking air from the air bottle:
Air leakage from the pneumatic system or
pressure regulator, damage of the back-
pressure valve of the regulator.
Remove the back-pressure valve and send
it to the workshop for repair.
The pressure regulator functions as a relief valve:
The adjusting cover is screw down too
much.
Remove the adjusting cover and send it to
the workshop for repair.
Seizure of the discharge piston in the dia- Remove the diaphragm assembly and send
it to the workshop for repair.