Job Description:

• 1) Smooths, drills, and tests parts for diesel engine fuel injectors according to specifications, using lapping machine, microscope drill, and testing equipment: Mounts injector check valves on spindle heads.

• 2) Smooths flat and curved surfaces of valves on rotating disk or semispherically shaped pan containing lapping compound for specified time.

• 3) Examines samples of lapped valves under binocular microscope for nicks and grooves.

• 4) Clamps injector spray tip in fixture under microscope drill and moves lever to drill holes into tip.

• 5) Stamps identifying numbers on injector parts, using roll type metal stamper.

• 6) Clamps body of injector into holding fixture and inserts tip assembly including check valve, barrel and plunger, stem, spring, and retaining nut.

• 7) Screws injector into testing machine and moves lever to test operation of plunger, spring, and spray tip outlets.