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 133 of 1176
TM 9-2320-361-24-1
0008 00
0008 00-5
MECHANICAL SYSTEMS TROUBLESHOOTING - DIRECT SUPPORT (Contd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. POOR
ACCELERATION
AND/OR LACK
OF POWER (Contd)
6. Check engine valve train
operation and valve lash
adjustment (WP 0031 00).
7. Check engine cylinder compression.
Refer to WP 0008 00, table 1,
malfunction 3, step 2. Adjust as
necessary (WP 0031 00).
Refer to WP 0008 00, table 1,
malfunction 11, tests 1 and 2.
7. ENGINE DELIVERS
EXCESSIVE BLACK
SMOKE
Refer to WP 0008 00, table 2,
malfunction 4.
Replace malfunctioning components.
8. ENGINE SURGES
Perform WP 0008 00, table 2,
malfunction 1.
Replace malfunctioning components.
9. ENGINE MISFIRES
DURING OPERATION
1. Verify fuel injector nozzle feed
lines are correctly installed in fuel
injector pump hydraulic head
(WP 0068 00).
2. Check fuel injector nozzle
operation.
3. Check fuel injection pump
operation.
4. Check engine valve train
operation and valve lash
adjustment (WP 0031 00).
5. Check engine cylinders
compression readings.
If fuel injector nozzle feed lines are
incorrectly installed, remove and
install in correct location
(WP 0068 00).
Refer to WP 0008 00, table 2,
malfunction 1, step 2.
Refer to WP 0008 00, table 2,
malfunction 3, step 2.
Refer to WP 0008 00, table 1,
malfunction 3, step 2. Adjust if
necessary (WP 0031 00).
Refer to WP 0008 00, table 1,
malfunction 11, tests 1 and 2.
10. ENGINE STOPS
DURING NORMAL
OPERATION
Perform Engine Troubleshooting
Procedures, WP 0008 00, table 1,
malfunction 1.
Replace defective components as
necessary.
11. EXHAUST COLOR
BLUE DURING
NORMAL
OPERATION
NOTE
Blue exhaust indicates presence of
excessive engine oil in cylinder
combustion chamber.
Test 1. Perform an engine cylinder
compression test.
1. Check for proper valve and
rocker arms movement and
ensure they are adjusted to
specifications (WP 0031 00).
2. Cutoff fuel supply at fuel
pump by removing fuse
(WP 0059 00).
3. Ensure fuel batteries are
fully charged and starter
operates normal.
4. Remove all injectors in
cylinder head.
5. Connect compression gauge
and necessary adapter to
injector port of number 1
cylinder.
Table 1. Engine Troubleshooting Procedures (Contd).
Back to Top
