TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 174 of 1176
TM 9-2320-361-24-1
0010 00
0010 00-14
COMPRESSED AIR AND BRAKE SYSTEM TROUBLESHOOTING (Contd)
Table 3. Compressed Air Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. AIR PRESSURE DOES
NOT BUILD UP
TO NORMAL
OPERATING
PRESSURE (ABOVE
85 PSI) ACCORDING
TO GAUGE
1. Check for compressed air leaks.
2. Adjust air governor (WP 0183 00).
3. Perform WP 0010, table 3,
malfunction 1, test 2.
If leak is found, repair or replace
compressed air lines or fittings
(TM 9-243).
3. AIR PRESSURE
EXCEEDS MAXIMUM
(GAUGE READS
OVER 120 PSI) AND
SAFETY VALVE
OPENS TO RELEASE
AIR PRESSURE
1. Check for air loss through
accessories. (Refer to WP 0010 00,
table 4, malfunctions 1, 2, and 3).
2. Check governor signal line (4) for
bends, or leaks.
Test 1. Check governor signal line (4)
pressure.
1. Stop engine and open all drain
valves (TM 9-2320-361-10)
until all air pressure is
released from brake system.
2. Disconnect governor signal
line (4) from adapter (3).
3. Remove adapter (3) from air
governor (2).
4. Install tee (5) on air
governor (2).
5. Connect test gauge (1) and
governor signal line (4) to
tee (5).
6. Direct assistant to start
engine (TM 9-2320-361-10)
and allow air supply to build
up to normal operating
pressure.
7. Compare air pressure reading
indicated on test gauge (1) to
air pressure indicated on
instrument panel gauge.
1. If governor signal line (4) is
crimped, bent, or leaking, repair or
replace governor signal line (4)
(TM 9-243).
2. If no restrictions are apparent,
proceed to test 1.
1. If test gauge (1) reading is below
85 psi (586 kPa), adjust governor
(WP 0183 00).
2. If governor adjustment does not
increase governor signal line (4)
pressure above 85 psi (586 kPa) on
test gauge (1), replace air governor
(WP 0183 00).
Back to Top
