AIR SYSTEM PRESSURE BUILDS UP MORE THAN 120 PSI (827 KPA) (COMPRESSOR FAILS TO UNLOAD) (cont)

TM 9-2320-366-20-2

(1) Disconnect (air compressor to purge valve)

air hose form air compressor and purge valve.

(2) Blow through one end of air hose. If no

air escapes from other end of air hose,

air hose is blocked.

(3) Connect (air compressor to purge valve) air

hose to air compressor.

(4) Lower cab (TM 9-2320-366-10-1).

(1) Start engine (TM 9-2320-366-10-1).

(2) Check for presence of air at (air compressor

to purge valve) air hose.

(3) If no air escapes from air hose, Adjust or

replace air compressor governor (para 11-31).

(4) If air escapes from air hose, service air dryer

for faulty purge valve (para 23-11).

(5) Shut down engine (TM 9-2320-366-10-1).

(6) Connect (air compressor to purge valve)

air hose to air dryer purge valve.

Change 1

2-1981