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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 Exhaust Camshaft Replacement >> Installation Procedure

Installation Procedure

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  1. Apply clean engine oil to all lobes and journals prior to installing the camshafts. Adhesives, Fluids, Lubricants, and Sealers 
  2. GM5161894Courtesy of GENERAL MOTORS COMPANY

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

  3. 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.
  4. GM5161873Courtesy of GENERAL MOTORS COMPANY

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

  5. 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).
  6. GM5161878Courtesy of GENERAL MOTORS COMPANY

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

  7. GM5161889Courtesy of GENERAL MOTORS COMPANY

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

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

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

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

    Timing Chain Guide (3) - Install

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

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

  15. Vacuum Pump - Install - Vacuum Pump Replacement
  16. Camshaft Cover - Install - Camshaft Cover Replacement