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 119 of 1176
TM 9-2320-361-24-1
0006 00
0006 00-23
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. DELIVERY PUMP
DISPENSES FUEL SLOWLY
FROM BOTH TANKS
(Contd)
4. Check operation of discharge
valve control levers.
5. Check transfer case PTO
operation.
1. If control levers are not operating
properly, remove and inspect
(WP 0264 00).
2. If control lever assembly
components are defective, replace
(WP 0264 00).
If transfer case PTO is not
operating, refer to WP 0006 00,
table 17, malfunction 4.
3. FUEL DOES NOT PUMP
OR PUMPS SLOWLY
FROM SELECTED TANK,
AND FUEL DRAINS
SLOWLY FROM SELECTED
TANK USING GRAVITY
PROCEDURES
1. Check discharge control cables
for proper lubrication
(WP 0020 00).
2. Check discharge control cable for
breaks or kinks.
3. Check discharge control cable for
proper adjustment.
4. Inspect discharge valve tubes for
bent, crushed, broken, or leaking
tubes.
5. Inspect discharge valves for
proper operation.
Lubricate discharge control cable if
necessary (WP 0020 00).
If discharge control cable is broken
or kinked, replace (WP 0264 00).
If control cable needs adjustment,
remove slack in cable
(WP 0264 00).
If discharge valve tubes are bent,
crushed, broken, or leaking, replace
(WP 0266 00).
If discharge valves are broken or
inoperative, replace (WP 0263 00).
4. FUEL TANK
COMPARTMENTS
CANNOT BE SUCTION
FILLED
1. Check delivery pump propeller
shaft for broken universal joints
or broken shaft.
2. Perform fuel filter separator
check (TM 9-2320-361-10).
3. Check delivery pump strainer for
restrictions.
1. If shaft is broken, replace
(WP 0292 00 or WP 0293 00).
2. If universal joints are broken,
replace (WP 0141 00).
If fuel filter separator is restricted,
replace (WP 0286 00).
1. If strainer is restricted, clean or
replace (WP 0284 00).
NOTE
If No. 2 diesel fuel is being used
and ambient air temperature is
32 °F (0 °C), the outlet pressure
may fall as low as 5 psi (34.5 kPa).
This could cause slow or no delivery
of fuel to delivery pump. Refer to
TM 9-2320-361-10 for fuel
separator inlet and outlet pressure
differences.
2. If fuel system is clean and
pressure is low, replace delivery
pump (WP 0280 00).
Table 19. Fuel Tank (M49A2C) Troubleshooting Procedures (Contd).
Back to Top
