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Home›Repair guides›¢ Intake & Exhaust Valve Procedure

Cummins — ¢ Intake & Exhaust Valve Procedure

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

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Procedure

  1. 1. Remove the air crossover tube (water-to-air system only).
  2. 2. Disconnect the support clamps, hose clamps, and v
  3. 3. Remove the valve cover.
  4. 4. Locate top dead center (TDC) for cylinder No 1 by
  5. 5. Use a feeler gauge to check or set clearance.
  6. 6. Check or set valves with the engine cold (below 60° C
  7. 7. After finding TDC for cylinder No. 1 use a flathead
  8. 8. Tighten the locknut using a torque value of 24 Nem
  9. 9. Mark the vibration damper and rotate the engine 360
  10. 10. Using a flathead screwdriver and set the following
  11. 11. Tighten the locknut using a torque value of 24 Nem
  12. 12. Install the rubber seal into the groove in the valve
  13. 13. Install the valve cover using a torque value of 24
  14. 14. Install the crankcase vent tube and secure with the
  15. 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.