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 TM 55-1905-220-14-10
Table 5-3. Fuel system - Injector - Insufficient Injector Holding Time Troubleshooting.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. Insufficient injector holding time troubleshooting.'
Step 1.
Poor bushing to body fit.
Lap the injector body.
Step 2.
Injector nut not tightened to specified torque.
Step 3.
Cracked spray tip.
Replace the needle valve and spray tip assembly.
Step 4.
Worn or eroded, needle valve.
Replace the needle valve and spray tip assembly.
Step 5.
Worn, or eroded needle valve seat in spray tip.
Replace the needle valve and spray, tip assembly.
Step 6.
Worn or broken valve spring.
Replace the valve spring.
Step 7.
Worn or damaged valve spring seat.
Replace the valve spring seat.
Step 8.
Defective seal ring.
Replace the seal ring.
Step 9.
Body plug leaks.
Install new body plugs.
Step 10. Filter gaskets leak.
Replace the filter cap gaskets and tighten the filter caps to 65-75 lb-ft torque.
5-5
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