3-9. FUEL INJECTION NOZZLE REPAIR (CONT)
Cleaning and Inspection
To prevent fire or explosion, do not bring sparks or open flame near diesel fuel.
Clean parts in diesel fuel.
Wipe dry with a clean rag.
Nozzle body and needle valve are replaced in sets.
Inspect parts for breaks and scars. Inspect polish finish on needle valve. Inspect for snug fit of needle
valve in nozzle. Replace damaged parts as required.
Place nozzle holder in vise with soft jaws.
Install shims, coil spring, needle valve, and nozzle.
Keep hands away from nozzle tip when testing fuel injection cracking pressure. The fuel is ejected
with enough force to penetrate skin.
Connect fuel injection nozzle to tester.