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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (Engine Mechanical - 2.5L (LCV)) >> Repair Instructions >> Camshaft Position Actuator and Intake Camshaft Replacement >> Installation Procedure

Installation Procedure

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  1. GM5162074Courtesy of GENERAL MOTORS COMPANY

    Install the intake camshaft (2) and the intake camshaft actuator (1).

  2. GM5162063Courtesy of GENERAL MOTORS COMPANY

    Align and install the EN-50793  Camshaft Actuator Retainer (1) into the slots of the intake camshaft actuator.

  3. Mount the EN-50793  Camshaft Actuator Retainer to engine front cover and tighten the 2 bolts (2) to 10 N.m (89 lb in).
  4. GM5162065Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Bolt (1) - Install NEW - Camshaft Assembly Assemble 

  5. GM5162063Courtesy of GENERAL MOTORS COMPANY

    Remove the EN-50793  Camshaft Actuator Retainer (1).

  6. Apply clean engine oil to all lobes and journals prior to installing the camshafts. Adhesives, Fluids, Lubricants, and Sealers 
  7. Lift the intake camshaft from the exhaust camshaft position and place it into it's original position.
  8. Set the intake camshaft on top of the roller followers in the camshaft bearing journals with the intake actuator timing mark at approximately the 11 O'clock position.
  9. GM5162050Courtesy of GENERAL MOTORS COMPANY

    Camshaft Bearing Cap (2) - Install [5x] - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 

  10. Camshaft Bearing Cap Bolt (1) - Install [10x] - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 
  11. Apply clean engine oil to all lobes and journals prior to installing the camshafts. Adhesives, Fluids, Lubricants, and Sealers 
  12. GM5161894Courtesy of GENERAL MOTORS COMPANY

    Install the exhaust camshaft (1) and exhaust camshaft actuator (2).

  13. Set the exhaust camshaft on top of the roller followers in the camshaft bearing journals with the exhaust actuator timing mark at approximately the one O'clock position.
  14. GM5161873Courtesy of GENERAL MOTORS COMPANY

    Align and install the EN-50793  Camshaft Actuator Retainer (1) into the slots of the exhaust camshaft actuator.

  15. Mount the EN-50793  Camshaft Actuator Retainer (1) to engine front cover and tighten the 2 bolts (2) to 10 N.m (89 lb in).
  16. GM5161878Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Bolt (1) - Install NEW - Camshaft Assembly Assemble 

  17. GM5161889Courtesy of GENERAL MOTORS COMPANY

    Camshaft Bearing Cap (2) - Install [4x] - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 

  18. Camshaft Bearing Cap Bolt (1) - Install [8x] - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 
  19. GM5162168Courtesy of GENERAL MOTORS COMPANY

    Camshaft Bearing Cap (2) - Install - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 

  20. Camshaft Bearing Cap Bolt (1) - Install [2x] - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 
  21. GM5161885Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Guide (3) - Install

  22. Timing Chain Guide Bolt (2) - Install - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 
  23. Camshaft Bearing Cap Bolt (1) - Install - Intake and Exhaust Camshaft, Bearing Cap, and Lash Adjuster Installation 
  24. GM5161866Courtesy of GENERAL MOTORS COMPANY

    Remove the EN-50656  Timing Chain Retainer (1).

  25. GM4341675Courtesy of GENERAL MOTORS COMPANY

    Fuel Pump (2) - Install - Fuel Pump Replacement

  26. Vacuum Pump - Install - Vacuum Pump Replacement
  27. Camshaft Cover - Install - Camshaft Cover Replacement 
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