TM-9-2320-361-34

2-1/2-TON, 6x6, M44A2 SERIES TRUCKS (MULTIFUEL)

TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE

MAY 1992
TM-9-2320-361-34

  TM-9-2320-361-34 - Page 41 of 764

TM9-2320-361-34
Table 2-1. Mechanical Troubleshooting (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE
ACTION
Step 2. Check discharge valve operation for selected compartment.
a. If discharge valve operation is defective, remove and inspect discharge valve internal
components (para. 15-13).
b. If discharge valve internal components are defective, replace (para. 15-13).
Step 3. Check delivery pump operation.
a. If delivery pump screen and filter separator are not restricted, remove and inspect delivery
pump internal components (para. 15-12).
b. If delivery pump internal components are defective, replace components (para. 15-12).
END OF TESTING!
53.
FUEL WILL NOT GRAVITY DRAIN FROM SELECTED COMPARTMENTS
Complete troubleshooting malfunction 52, step 2.
END OF TESTING!
54. FUEL TANK COMPARTMENTS CANNOT BE SUCTION FILLED
Complete troubleshooting malfunction 52, steps 1 and 3.
END OF TESTING!
55. FUEL MIXED WITH WATER WHEN DISPENSED
If dump drain valves operation is defective, remove sump assembly and replace dump drain
valve(s) (TM9-2320-361-20).
a. If drain valves operation is not defective, disassemble sump valve assembly and inspect
internal components (para. 15-13).
b. If sump valve components are defective, replace components (para. 15-13).
END OF TESTING!
WATER TANK (M50A2 AND M50A3)
56. WATER WILL NOT PUMP FROM COMPARTMENTS OR PUMPS SLOWLY
Step 1. Check transfer case power takeoff operation.
If transfer case power takeoff is not operating, check transfer case (malfunctions 32 through 36).
Step 2. Check discharge valve operation for selected compartment.
a. If discharge valve operation is defective, remove and inspect discharge valve internal
components (para. 15-10 or 15-11).
b. If discharge valve internal components are defective, replace (para. 15-10 or 15-11).
Step 3. Check delivery pump operation.
a. If delivery pump screen and filter separator are not restricted, remove and inspect
delivery pump internal components (para. 15-12).
b. If delivery pump internal components are defective, replace components (para. 15-12).
END OF TESTING!
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