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TM 10-3930-659-20
Table 4-1. Mechanical Troubleshooting (Con't).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WARNING
Diesel fuel is combustible. DO NOT smoke or allow open flame near fuel tank.
Failure to follow this warning will result in death or serious Injury to personnel. If
you are burned, Immediately seek medical aid.
Step 10.
Check fuel injection pump metering valve for sticking.
Lightly tap fuel injection pump housing with a soft hammer. If engine starts, notify Direct Support
Maintenance.
Step 11.
Check fuel injection pump static timing (see paragraph 5-26).
Adjust fuel injection pump static timing (see paragraph 5-26).
If engine still will not start, notify Direct Support Maintenance.
2.
ENGINE SURGES, STALLS, OR MISSES FREQUENTLY.
Step 1.
Check engine idle speed (see STE/ICE-R Test G04).
WARNING
Diesel fuel Is combustible. DO NOT smoke or allow open flame near fuel tank.
Failure to follow this warning will result in death or serious Injury to personnel. If
you are burned, Immediately seek medical aid.
Step 2.
Inspect fuel tank vent line for restrictions.
Replace restricted or damaged fuel tank vent line (see paragraph 5-15).
Step 3.
Inspect fuel filter for presence of water or restrictions.
Drain water from fuel filter (see paragraph 5-17).
Bleed fuel filter and lines (see paragraph 5-16).
Replace damaged fuel filter (see paragraph 5-17).
Step 4.
Inspect fuel tank-to-fuel transfer pump fuel line for leakage.
Tighten all loose connections.
Bleed fuel filter and lines (see paragraph 5-16).
Replace damaged fuel lines (see paragraph 5-15).
Step 5.
Perform fuel system tests (see STE/ICE-R Tests NG31 and GO10).
Step 6.
Inspect for restricted fuel injection pump-to-fuel tank fuel line by disconnecting fuel line from fuel
injection pump. Connect a hose to fuel injection pump and route fuel into suitable container.
If engine operates normally, replace fuel injection pump-to-fuel tank fuel line (see paragraph 5-
15).
4-9
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