TM 5-3895-346-14
ENGINE OVERHAUL
TROUBLESHOOTING
TROUBLE SHOOTING CHARTS (Needle Valve Injectors)
SUGGESTED REMEDY
1. Replace the needle valve and spray tip assembly.
2. Replace the needle valve and spray tip assembly.
3. Replace the spring seat.
4. Replace the valve spring.
5. Disassemble the injector and clean all of the parts.
6. Remove the carbon in the spray tip with tip reamer J 9464-01 which is especially designed and ground for
this purpose.
7. Check the size of the spray tip orifices. Then, using tool J 4298-1 with the proper size wire, clean the
orifices.
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