Table 3. Compressed Air Troubleshooting Procedures

TM 9-2320-361-24-1

0010 00

COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING (Contd)

Table 3. Compressed Air Troubleshooting Procedures (Contd).

WARNING

Do not disconnect air lines before draining air reservoirs.

Small parts under pressure may shoot out with high velocity,

causing injury to personnel.

Wear eyeshields when working with compressed air system.

Failure to wear eyeshields may result in injury to personnel.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. Check for missing or loose air

If air compressor drivebelt (3) is

1. NO AIR PRESSURE,

compressor drivebelt (3).

missing or loose, replace or adjust

OR COMPRESSED

drivebelt (3) (WP 0182 00).

AIR READS BELOW

60 PSI (LOW AIR

2. Check for leaking compressed air

If leaking, repair or replace

PRESSURE

lines and fittings.

compressed air lines or fittings

WARNING BUZZER

(TM 9-243).

SOUNDING,

3. Start engine (TM 9-2320-361-10)

1. If compressor outlet line (5) is hot,

INDICATING

and feel compressor outlet line (5).

proceed to test 1.

AIR PRESSURE NOT

2. If compressor outlet line (5) is cool

BUILDING UP TO

or warm, proceed to test 2.

NORMAL

OPERATING RANGE

Test 1. Check air reservoirs (1) for air

1. If low amount of air pressure is

AS INDICATED

pressure.

released, perform step 3.

BY GAUGE)

2. If high amount of air pressure is

released, proceed to test 2.

1. Start engine (TM 9-2320-361-

10) and allow air pressure to

build up to normal operating

pressure.

2. Loosen air reservoirs drain

valves (2).

3. Check compressor outlet line

1. If compressor outlet line (5) is

(5) for restrictions.

restricted, repair or replace

(TM 9-243).

2. If compressor outlet line (5) is not

restricted, proceed to test 2.

Test 2. Check for air pressure at air

horn supply line (7).

1. Stop engine and open all drain

valves (2) (TM 9-2320-361-10)

until brake system air

pressure is completely drained.

2. Disconnect air horn supply

line (7).

3. Connect air horn supply line

(7) to test gauge (8).

4. Direct assistant to start

engine (TM 9-2320-361-10)

and allow air pressure to

build up to normal operating

pressure.

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