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 105 of 1176
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ENGINE CRANKS BUT
WILL NOT START IN COLD
WEATHER (FUEL SYSTEM
OPERATING PROPERLY)
(Contd)
WARNING
Diesel fuel is flammable. Do not
perform troubleshooting checks
near open flame, sparks, or
electricity. Injury or death to
personnel may result.
NOTE
• Have a drainage container ready
to catch fuel.
• During steps 3 and 4, do not
confuse in-tank fuel pump
pressure with manifold heater
pump pressure.
3. Disconnect fuel line at fuel
nozzle, energize manifold heater
circuit, and check to see if fuel is
discharged.
4. Check fuel nozzle for proper
operation.
1. If fuel is not discharged, replace
manifold heater fuel pump
(WP 0065 00 or WP 0066 00).
2. Remove fuel return lines
(WP 0062 00). Energize circuit
and check to see if fuel is
discharged. If fuel is not
discharged, replace manifold
heater (WP 0065 00 or
WP 0066 00).
Replace damaged fuel nozzle.
(WP 0067 00).
TM 9-2320-361-24-1
0006 00
0006 00-9
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
Table 3. Manifold Heater System Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE TEMPERATURE
GAUGE ABOVE 230 °F
(110 °C)
WARNING
Use caution when removing
radiator filler cap. Steam or hot
coolant under pressure may cause
injury to personnel.
1. Ensure engine fuel supply grade
is correct for vehicle use and
climatic conditions
(TM 9-2320-361-10).
2. Check coolant protection level
with antifreeze tester.
3. Check engine temperature gauge
and engine temperature sending
unit (WP 0014 00, table 1,
malfunction 2).
If fuel grade is incorrect, completely
drain fuel system and replace fuel
with correct grade
(TM 9-2320-361-10).
If coolant is not within a safe
range, service cooling system
(WP 0076 00).
1. If engine temperature gauge is
defective, replace (WP 0095 00).
2. If engine temperature sending
unit is defective, replace
(WP 0107 00).
Table 4. Cooling System Troubleshooting Procedures.
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