Caterpillar C317 — Injector Adjustment

Adjustments · Unit injectors

For the Caterpillar C317, from the Caterpillar service manual.

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Procedure

1. Turn the injector adjusting screw clockwise until contact is made with the injector.
2. Turn the adjusting screw clockwise an additional 1/2 turn (180 deg.).
3. Hold the adjusting screw in this position and tighten the locknut to 41 lbft. (55 N-m).
4. Rotate the engine 360 deg. in direction of rotation and adjust the remaining valves and injectors.

Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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