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 98 of 1176
TM 9-2320-361-24-1
0006 00
0006 00-2
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. ENGINE WILL NOT
CRANK (Contd)
6. Check vertical exhaust system
and turbocharger for presence of
water. Remove exhaust elbow
from turbocharger (WP 0073 00).
(For M50A3 series vehicles, refer
to WP 0074 00).
1. If water is present in exhaust
elbow, disassemble and drain
exhaust system (WP 0073 00).
(For M50A3 series vehicles, refer
to WP 0074 00).
2. If water is present in
turbocharger housing, identified
by water on turbocharger fins or
hub, replace turbocharger
(WP 0057 00).
2. ENGINE CRANKS BUT
WILL NOT START
1. Check air cleaner indicator
(TM 9-2320-361-10).
WARNING
• Diesel fuel is flammable. Do not
perform troubleshooting checks
near open flame, sparks, or
electricity. Injury or death to
personnel may result.
• Compressed air source must not
exceed 30 psi (207 kPa). Wear
eyeshields when cleaning with
compressed air. Failure to wear
eyeshields may result in injury to
personnel.
2. Turn accessory switch to ON
position and drain 1/2 pint
(0.25 liter) of fuel from primary
fuel filter, secondary fuel filter,
and final fuel filter. Check for
contaminated fuel.
3. Check for white exhaust smoke
during cranking.
1. If red appears at indicator
window, inspect air intake head
for restrictions. If restrictions are
not present, replace air cleaner
element (WP 0052 00).
2. Reset air cleaner indicator
(TM 9-2320-361-10).
1. If water or contamination are
present, remove fuel tank
(WP 0060 00).
2. Clean and flush entire fuel
system. Dry system with
compressed air.
1. If white smoke can be seen, air
may be in fuel system. Bleed fuel
system (WP 0064 00).
2. If white smoke can be seen,
coolant may be inside
combustion chambers. If coolant
is present on dipstick, check
cylinder heads and gaskets for
defects (WP 0027 00).
Table 1. Engine Troubleshooting Procedures (Contd).
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