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
Step 6.
Test for defective governor control unit, paragraph 4.2.1.
a.
If governor control unit is not defective, do step 7.
b.
If defective, replace governor control unit, para 4,2.3.
Step 7.
Check 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.
ENGINE MISFIRNG.
Step 1.
Step 2.
Step 3.
Step 4.
Step 5.
Step 6.
Step 7.
Step 8.
Check for dirty fuel injector.
a.
Remove and inspect fuel injector in accordance with TM 9-2815-254-24. If not dirty, do
step 2.
b.
If dirty, clean fuel injector or if defective, replace in accordance with TM 9-2815-254-24.
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 fuel injection pump timing, refer to TM 9-2815-254-24.
a.
If fuel injection pump timing is correct, do step 4.
b.
If timing is not correct, time fuel injection pump in accordance with TM 9-2815-254-24.
Test for defective fuel injection pump, refer to TM 9-2815-254-24.
a.
If fuel injection pump is not defective, do step 5.
b.
If defective, repair or replace fuel injector 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, refertoTM9-2815-254-24.
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 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.
3-5
