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Home›Repair guides›Photo #7-18 - Valve Lash Adjustment

Cummins — Photo #7-18 - Valve Lash Adjustment

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

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Procedure

  1. 7. After finding TDC for cylinder No. 1 use a flathead
  2. 8. Tighten the locknut using a torque value of 24 Nem
  3. 9. Mark the vibration damper and rotate the engine 360
  4. 10. Using a flathead screwdriver and set the following
  5. 11. Tighten the locknut using a torque value of 24 Nem
  6. 12. Install the rubber seal into the groove in the valve
  7. 13. Install the valve cover using a torque value of 24
  8. 14. Install the crankcase vent tube and secure with the
  9. 15. Install the air crossover tube (water - to - air only).

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.