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 129 of 1176

TM 9-2320-361-24-1
0008 00
0008 00-1
FIELD TROUBLESHOOTING
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS (MULTIFUEL)
MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT
NOTE
Test run engine after each completed action.
Table 1. Engine Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE WILL NOT
CRANK
Inspect fuel injection pump for
seizure.
1. Remove drive gear access cover
(WP 0069 00).
2. Remove injection pump drive gear
(WP 0069 00).
3. Manually turn injection pump
shaft at center hub screw.
WARNING
• Ensure fuel shutoff valve is off
and remove throttle cable before
cranking engine. Failure to do so
may result in injury to personnel.
• All personnel must stand away
from engine during crank test.
Wear eye protection during crank
test. Failure to stand clear and
wear eye protection may cause
injury or death to personnel.
4. Check engine cylinders for fluid
locked pistons. Remove all fuel
injector nozzles (WP 0067 00).
Crank engine with starter.
If shaft will not rotate, replace
(WP 0069 00) or repair fuel injection
pump (WP 0446 00).
1. If crankshaft turns freely, identify
any fluid levels expelled from
cylinders. If fluid sample is
identified as coolant, proceed to
step 11.
2. If fluid sample is identified as fuel,
refer to
WP 0008 00, table 2,
malfunction 4.


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