AIR SYSTEM LOSES PRESSURE DURING OPERATION/SLOW, NO, OR INCORRECT AIR PRESSURE BUILDUP (cont)

TM 9-2320-366-20-2

j1. AIR SYSTEM LOSES PRESSURE DURING OPERATION/SLOW, NO, OR INCORRECT AIR

PRESSURE BUILDUP (CONT)

KNOWN INFO

TEST OPTIONS

Visual Inspection

FRONT BRAKE/REAR BRAKE

REASON FOR QUESTION

Do both FRONT BRAKE/

AIR pressure gages OK.

With no leaks in supply system,

REAR BRAKE AIR pressure

Air hoses and fittings from air

120 psi cannot be maintained if

gages read 120 psi?

cleaner to air compressor OK.

air compressor governor is out

Air hoses and fittings from air

of adjustment or faulty.

compressor to air dryer OK.

Air hose and fittings from

air dryer to wet tank OK.

Air hoses and fittings from

wet tank to air compressor OK.

Air hoses, check valves, and

fittings from wet tank to

primary and secondary air

tanks OK.

Purge valve and desiccant

cartridge OK.

POSSIBLE PROBLEMS

Faulty air compressor

Adjust or replace air

governor.

YES

compressor governor

Faulty air compressor.

(para 11-31).

Notify DS Maintenance to

replace air compressor.

2-1962

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