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Home›Repair guides›To make an adjustment to the unit injectors on cylinders 3, 5, and 6 use the following procedure:

Caterpillar 3456 GENERATOR SET CCB — To make an adjustment to the unit injectors on cylinders 3, 5, and 6 use the following procedure:

For the Caterpillar 3456 GENERATOR SET CCB.

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Procedure

  1. Put the No. 1 piston at the top center position on the compression stroke. Refer to Testing and
  2. Injector height gauge (4) is used in order to obtain a dimension of 78.0 + 0.2 mm (3.07 + 0.01
  3. Turn unit injector adjusting screw (2) clockwise until the correct height is obtained.
  4. Hold the adjusting screw in this position and tighten locknut (3) to a torque of 100 + 10 Nem (74 +
  5. Ib ft).
  6. To make an adjustment to the unit injectors on cylinders 1, 2, and 4, remove the timing bolt. Turn
  7. Repeat Steps 3 through 4.
  8. Remove the timing bolt from the flywheel after all the unit injector adjustments have been made.

Source: manual:3456 Injector Adjustment.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.