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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1584 (Engine Mechanical - 2.4L (Lat)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Camshaft Position Exhaust Actuator Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Camshaft Position Actuator
    GM1578298Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Ensure that the alignment mark made previously on the intake camshaft actuator is still aligned properly with the mark on the timing chain.
  1. Install the timing chain onto the exhaust camshaft actuator.
  2. Align the exhaust camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
  3. Install a NEW exhaust camshaft actuator bolt (2) until snug.
    4. Fig 2: View Of J 44217 Timing Chain Tensioner Tool
    GM1673561Courtesy of GENERAL MOTORS CORP.
  4. Remove the tool (1) from the intake camshaft side of the timing chain assembly.
    5. Fig 3: Identifying J 44217 Timing Chain Tensioner Tool
    GM1673556Courtesy of GENERAL MOTORS CORP.
  5. Remove the tool (1) from the exhaust camshaft side of the timing chain assembly.
  6. Install a 24 mm wrench onto the hex on the camshaft in order to hold the camshaft.
    7. NOTE: Refer to Fastener Notice .
  7. Tighten the NEW camshaft actuator bolt.

    Tighten:  Tighten the bolt to 85 N.m (63 lb ft), plus an additional 30 degrees using the J 45059  .

    8. Fig 4: Measuring Timing Chain Tensioner Assembly
    GM714496Courtesy of GENERAL MOTORS CORP.
  8. Remove the old oil from the timing chain tensioner.
  9. Inspect the timing chain tensioner for scoring or free movement.
  10. Inspect the timing chain washer and O-ring for damage. If damaged, replace the timing chain tensioner.
  11. Measure the timing chain tensioner assembly from end to end. A NEW tensioner should be supplied in the fully compressed non-active state. A tensioner in the compressed state will measure 72 mm (2.83 in) from end to end (a). A tensioner in the active state will measure 85 mm (3.35 in) from end to end (a).
    12. Fig 5: Compressing Timing Chain Tensioner
    GM797246Courtesy of GENERAL MOTORS CORP.
  12. If the timing chain tensioner is not in the compressed state, perform the following steps:
    1. Remove the piston assembly from the body of the timing chain tensioner by pulling it out.
    2. Install the J 45027-2 (2) into a vise.
    3. Install the notch end of the piston assembly into the J 45027-2 (2).
    4. Using the J 45027-1 (1), turn the ratchet cylinder into the piston.
    13. Fig 6: Measuring Timing Chain Tensioner Assembly
    GM714496Courtesy of GENERAL MOTORS CORP.
  13. Inspect the bore of the tensioner body for dirt, debris, and damage. If any damage appears, replace the tensioner. Clean dirt or debris with a lint free cloth.
  14. Install the compressed piston assembly back into the timing chain tensioner body until the assembly stops at the bottom of the bore. Do not compress the piston assembly against the bottom of the bore. If the piston assembly is compressed against the bottom of the bore, the assembly will activate the tensioner, which will then need to be reset again.
  15. At the point the tension should measure approximately 72 mm (2.83 mm) from end to end (a). If the tensioner does not measure 72 mm (2.83 mm) from end to end (a) repeat steps 8.1- 8.4.
    16. Fig 7: View Of Timing Chain Tensioner
    GM1578295Courtesy of GENERAL MOTORS CORP.
  16. Ensure that all dirt and debris is removed from the timing chain tensioner threaded hole in the cylinder head.
  17. Install the timing chain tensioner.

    Tighten:  Tighten the tensioner to 75 N.m (66 lb ft).

  18. The timing chain tensioner is released by compressing the tensioner 2 mm (0.079 in) which will release the locking mechanism in the ratchet. To release the timing chain tensioner, use a suitable tool with a rubber tip on the end. Feed the tool down through the cam chest to rest on the timing chain, then give a sharp jolt diagonally downwards to release the tensioner.
    19. Fig 8: View Of Upper Timing Chain Guide Bolts And Guide
    GM1578296Courtesy of GENERAL MOTORS CORP.
  19. Install the upper timing chain guide and bolts.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

  20. Install the camshaft cover. Refer to Camshaft Cover Replacement .
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