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 118 of 1176
TM 9-2320-361-24-1
0006 00
0006 00-22
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. FUEL DOES NOT PUMP
FROM COMPARTMENTS,
OR PUMPS SLOWLY
1. Inspect transfer PTO for proper
operation.
2. Check discharge valve operation
(WP 0264 00).
3. Check delivery pump propeller
shaft for breaks and damaged
universal joints.
4. Perform fuel filter separator
check (TM 9-2320-361-10).
5. Check delivery pump strainer for
restrictions.
If transfer PTO is inoperative,
check PTO linkage for proper
adjustment (WP 0133 00).
Replace discharge valve
(WP 0263 00).
If propeller shaft is broken or
universal joints need replacement,
replace (WP 0292 00).
If fuel filter separator is restricted,
replace filter (WP 0286 00).
1. If restricted, clean or replace
delivery pump strainer
(WP 0284 00).
2. If fuel filter separator is not
restricted and fuel pressure is
low, replace delivery pump
(WP 0280 00).
2. DELIVERY PUMP
DISPENSES FUEL
SLOWLY FROM BOTH
TANKS
1. Perform fuel filter separator
check (TM 9-2320-361-10).
2. Check delivery pump strainer for
restrictions.
3. Check PTO speed control linkage
for proper operation and
adjustment (WP 0347 00).
If fuel filter separator is restricted,
replace filter (WP 0286 00).
NOTE
If No. 2 diesel fuel is being used
and ambient air temperature is
32 °F (0 °C), the outlet pressure
could be as low as 5 psi (34.5 kPa).
(See TM 9-2320-361-10 for fuel
filter separator inlet and outlet
pressure differences.)
1. If restricted, clean or replace
delivery pump strainer
(WP 0284 00).
2. If fuel system is clean and
pressure is low, replace delivery
pump (WP 0280 00).
If control linkage is damaged,
repair or replace (WP 0347 00).
Table 19. Fuel Tank (M49A2C) Troubleshooting Procedures.
WARNING
Diesel fuel is flammable. Do not perform troubleshooting checks
near open flame, sparks, or electricity. Injury or death to
personnel may result.
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