TM 9-2330-390-14&P
Table 4-2. Unit Troubleshooting (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
23. ENGINE RUNS ROUGH (MISFIRES).
Step 1.
Check for fuel leakage or air in fuel system due to loose injection pipe nuts (see paragraph 4-122).
Tighten nuts at both ends of injection pipe. Replace damaged injection pipe (see
paragraph 4-122).
Step 2.
Check for clogged or dirty fuel filter (see paragraph 4-124).
Clean or replace damaged fuel filter (see paragraph 4-124).
Step 3.
Check for clogged overflow hose (see paragraph 4-122).
Step 4.
Remove and inspect nozzle holder for clogging or damage (see paragraph 4-121).
Clean or replace damaged overflow hose (see paragraph 4-122).
Replace damaged nozzle holder (see paragraph 4-121).
Replace damaged injection pump (see paragraph 4-120).
24. ENGINE DOES NOT DEVELOP FULL POWER.
Compressed air used for cleaning or drying purposes, or for clearing restrictions,
should never exceed 30 pal (207 kPa). Wear protective clothing (goggles/shield,
gloves, etc.) and use caution to avoid Injury to personnel.
Step 1.
Remove oil cooler cover (see paragraph 4-117). Check for clogged oil cooler fins.
Oil cooler fins are fragile. DO NOT use a tool to remove dirt and obstructions or
damage will result.
Clear oil cooler fins of dirt or obstructions with compressed air.
Step 2.
Remove cylinder cowling and spiral case (see paragraph 4-128). Check for clogged cylinder
cowling and dirt or debris around flywheel.
Clear cylinder cowling and area around flywheel of dirt or debris with compressed air.
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