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

TM 9-2320-366-20-2

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

PRESSURE BUILDUP

INITIAL SETUP

Equipment Conditions

Tools and Special Tools

Engine running (TM 9-2320-366-10-1).

Tool Kit, Genl Mech (Item 46, Appendix C)

Parking brake on (TM 9-2320-366-10-1).

Goggles, Industrial (Item 15, Appendix C)

Wheels chocked (TM 9-2320-366-10-1).

Pan, Wash (Item 25, Appendix C)

Materials/Parts

Soap, Laundry (Item 63, Appendix D).

START

KNOWN INFO

TEST OPTIONS

Visual Inspection

Nothing.

REASON FOR QUESTION

Do FRONT BRAKE/REAR

KNOWN INFO

Low pressure on both FRONT

BRAKE AIR pressure gages

BRAKE/REAR BRAKE AIR

show even pressure?

Faulty FRONT BRAKE/REAR

pressure gages indicates air

BRAKE AIR pressure gages.

system cannot maintain

Damaged air hose from air

operating pressure.

cleaner to air compressor.

Damaged air hose from air

compressor to air dryer.

Damaged air hose from air

dryer to wet tank.

Damaged air hose from wet

tank to air compressor.

Damaged air hoses from wet

tank to primary and secondary

air tanks.

Faulty check valves at primary

Perform Brake Troubleshooting

and secondary air tanks.

YES

i2. Rear Brakes Do Not Apply or

Faulty air dryer purge valve

i6. Front Brakes Do Not Apply.

and/or clogged desiccant

cartridge.

Faulty air compressor

governor.

Faulty air compressor.

2-1948

Change 1