ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
TABLE 3-1. Direct Support Troubleshooting - Continued
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 5.
Check for stuck or burnt valves, refer to TM 9-2815-255-24.
a.
If valves are not stuck or burnt, do step 6.
b.
If stuck or burnt, replace valves in accordance with TM 9-2815-255-24.
Step 6.
Test for defective governor control unit, paragraph 4-3-2.
a.
If governor control unit is not defective, do step 7.
b.
If defective, replace governor control unit, paragraph 4-3-4.
Step 7.
Check for low engine compression, refer to TM 9-2815-255-24.
If compression is low, repair or replace engine in accordance with TM 9-2815-255-24.
3. ENGINE MISFIRING.
Step 1.
Check for defective fuel injection nozzles, refer to TM 9-2815-255-24.
a.
If fuel injection nozzles are not defective, do step 2.
b.
If defective, replace fuel injection nozzles, refer toTM9-2815-255-24.
Step 2.
Test for defective governor actuator, refer to paragraph 4-15.
a.
If governor is not defective, do step 3.
b.
If defective, replace governor in accordance with TM 9-2815-255-24.
Step 3.
Test fuel injection pump timing, refer to TM 9-2815-255-24.
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 9-2815-255-24.
Step 4.
Test for defective fuel injection pump, refer to TM 9-2815-255-24.
a.
If fuel injection pump is not defective, do step 5.
b.
If defective, repair or replace fuel injection pump in accordance with
TM 9-2815-255-24.
Step 5.
Check valve adjustment, refer to TM 9-2815-255-24.
a.
If valves are properly adjusted, do step 6.
b.
If improperly adjusted, adjust valve in accordance with TM 9-2815-255-24.
Step 6.
Check for weak valve springs, refer to TM 9-2815-255-24.
a.
If valve springs are not weak, do step 7.
b.
If weak, replace valve springs in accordance with TM 9-2815-255-24.
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