ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
TABLE 3-1. DIRECT SUPPORT TROUBLESHOOTING - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
4. ENGINE DOES NOT DEVELOP FULL POWER.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
Step 9.
Check for dirty fuel injectors.
a.
Remove and inspect fuel injectors in accordance with TM 9-2815-254-24. If not dirty, do
step 2.
Test for defective governor, refer to paragraph 4.14.1.
a.
If governor is not defective, do step 3.
b.
If defective, replace governor in accordance with paragraph 4.14.2.
Test for defective governor control unit, paragraph 4.2.1.
a.
If governor control unit is not defective, do step 4.
b.
If defective, replace governor control unit, para 4.2.3.
Test fuel injection pump timing, refer to TM 9-2815-254-24.
a.
If fuel injection pump timing is correct, do step 5.
b.
If timing is not correct, time fuel injection pump in accordance with TM 9-2815-254-24.
Check valve adjustment, refer to TM 9-2815-254-24.
a.
If valves are properly adjusted, do step 6.
b.
If improperly adjusted, adjust valves in accordance with TM 9-2815-254-24.
Check for weak valve springs, refer to TM 9-2815-254-24.
a.
If valve springs are not weak, do step 7.
b.
If weak, replace valve springs in accordance with TM 9-2815-254-24.
Check for stuck or burnt valves, refer to TM 9-2815-254-24.
a.
If valves are not stuck or burnt, do step 8.
b.
If stuck or burnt, replace valves in accordance with TM 9-2815-254-24.
Test for defective cylinder head gasket, refer to TM 9-2815-254-24.
a.
If cylinder head gasket is not defective, do step 9.
b.
If defective, replace cylinder head gasket in accordance with TM 9-2815-254-24.
Test for low engine compression, refer to TM 9-2815-254-24.
If compression is low, repair or replace engine in accordance with TM 9-2815-254-24.
5 . BLACK OR GRAY SMOKE IN EXHAUST.
Step 1.
Check for defective fuel injectors.
a.
Remove and inspect fuel injectors in accordance with TM 9-2815-254-24. If not dirty, do
step 2.
b.
If dirty, clean fuel injectors or if defective, replace in accordance with TM 9-2815-254-24.
Step 2.
Test fuel injection pump timing, refer to TM 9-2815-254-24.
If timing is not correct, time fuel injection pump in accordance with TM 9-2815-254-24.
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