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Home›Repair guides›Valve Lash Adjustment

Cummins — Valve Lash Adjustment

For these Cummins models: GTA8.3, GTA8.3 CD1, GTAR 3.

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Procedure

  1. 1. Cool engine to ambient temperature
  2. 2. Remove valve cover
  3. 3. Measure valve lash with feeler gauge
  4. 4. Adjust lash by turning adjuster screw
  5. 5. Recheck lash and reinstall cover

Tools required

  • Feeler gauge

Source: manual:CUMMINS GTA 8.3 Operation and Maintenance Manual 2001 (2).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.