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 97 of 1176
TM 9-2320-361-24-1
0006 00
0006 00-1
FIELD TROUBLESHOOTING
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS (MULTIFUEL)
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT
NOTE
Refer to the general troubleshooting instructions in
Introduction to Troubleshooting (WP 0004 00) prior to
performing any mechanical troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE WILL NOT
CRANK
1. Verify proper voltage is present
at starter (WP 0012 00, table 2,
malfunction 2, test 3).
2. Remove starter (WP 0088 00)
and visually check starter drive,
ring gear, and flywheel for
broken or missing teeth.
WARNING
Ensure fuel shutoff valve is off and
remove throttle cable before
cranking engine. Failure to do so
may result in injury to personnel.
3. Check for seized engine or fluid-
locked pistons. Remove radiator
and rotate engine at vibration
damper bolt two full revolutions
with starter removed.
4. Check water pump, and belt-
driven accessories. Remove all
belts (WP 0084 00 and
WP 0182 00). Manually turn
drive pulley of each accessory
and water pump.
5. Check air induction system for
presence of water or restrictions.
Remove air cleaner cover
(WP 0052 00).
If voltage is not present, refer to
WP 0012 00, table 2, malfunction 1.
1. If starter teeth are damaged,
replace starter (WP 0088 00).
2. If ring gear is damaged, replace
flywheel (WP 0029 00).
If engine is seized, replace engine
(WP 0046 00).
1. If water pump drive pulley will
not turn, replace water pump
(WP 0082 00).
2. If any drive pulley accessory will
not turn, replace accessory
(WP 0085 00, and WP 0180 00).
If air cleaner cover is restricted or
contaminated with water, replace
element (WP 0052 00).
Table 1. Engine Troubleshooting Procedures.
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