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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 40 (Engine Mechanical - 6.6L - Off Vehicle Repair Instructions (1 Of 3)) >> Off-Vehicle Repair Instructions (Part 1) >> Camshaft Removal

Camshaft Removal

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Tools Required 

J 7872  Dial indicator set.

  1. Measure the camshaft end play using J 7872  .
    Fig 1: Measuring Camshaft End Play Using J 7872
    GM663816Courtesy of GENERAL MOTORS CORP.
    • The production value is 0.050-0.114 mm (0.002-0.0045 in) and service limit is 0.20 mm (0.008 in).
    • Replace the camshaft or the camshaft thrust plate if the measured value exceeds the service limit.
  2. Block the crankshaft from turning with a wooden handle.
    Fig 2: Blocking Crankshaft From Turning Using Wooden Handle
    GM660539Courtesy of GENERAL MOTORS CORP.
  3. Loosen the camshaft gear bolt and leave the bolt finger tight.
  4. Remove the camshaft exciter ring bolts.
    Fig 3: View Of Camshaft Exciter Ring, Bolts & Thrust Plate Bolts
    GM663091Courtesy of GENERAL MOTORS CORP.
  5. IMPORTANT: The two piece cam gear must be bolted together to prevent the spring tension from unloading upon removal.
  6. Remove the camshaft exciter ring.
  7. Align the threaded hole with a suitable tool and install an exciter ring bolt to secure the spring tension.
    Fig 4: Using Exciter Ring Bolt To Secure Spring Tension
    GM1650679Courtesy of GENERAL MOTORS CORP.
  8. Remove the camshaft thrust plate bolts through the holes in the camshaft gear.
  9. Remove the camshaft with the camshaft gear attached.
  10. Remove the camshaft gear bolt and washer.
  11. Remove the camshaft gear.
  12. Remove the camshaft thrust plate.
  13. Remove the camshaft with the camshaft gear attached.
    Fig 5: View Of Camshaft With Camshaft Gear Attached
    GM663093Courtesy of GENERAL MOTORS CORP.
  14. Remove the camshaft gear bolt and washer.
    Fig 6: View Of Camshaft, Camshaft Gear & Camshaft Thrust Plate
    GM660540Courtesy of GENERAL MOTORS CORP.
  15. Remove the camshaft gear.
  16. Remove the camshaft thrust plate.