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Home >> Chevrolet >> 2021 >> Blazer RS, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.0L (LSY)) >> Repair Instructions >> Camshaft Sprocket Bolt Replacement >> Installation Procedure

Installation Procedure

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  1. GM5285327Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Lubricate under the washer surface.

    Lubricate the Camshaft Sprocket Bolt (1) with clean engine oil where indicated. Adhesives, Fluids, Lubricants, and Sealers 

  2. GM5285310Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Refer to the procedure link for torque specification.

    Camshaft Sprocket Bolt (1) - Install NEW and hand tighten [2x]

  3. GM5185359Courtesy of GENERAL MOTORS COMPANY

    EN-52436  Timing Chain Tensioner Retention Tool (1) @ Timing Chain (2) - Remove

  4. GM5285332Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The following steps will remove the slack in the timing chain prior to final torque to the camshaft sprocket bolts.

    Check that the EN-52461-1  Holder (1) sits correctly in the hole of the camshaft sprocket.

  5. Rotate the EN-52461-1  Holder counter-clockwise (1).
  6. While holding the EN-52461-1  Holder (1) in the counter-clockwise position, tighten the bolt (2) 6 N.m (53 lb in) just enough to hold the EN-52461-1  Holder in place.
  7. GM5843514Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Torque-to-Yield Fastener Caution .

    Camshaft Sprocket Bolt (1) @ Intake Camshaft - Tighten

    1. First Pass: 50 N.m (37 lb ft)
    2. Final Pass: 28 degrees using the EN-45059  Angle Meter
  8. GM5285332Courtesy of GENERAL MOTORS COMPANY

    Check that the EN-52461-1  Holder (4) sits correctly in the hole of the exhaust camshaft sprocket.

  9. Rotate the EN-52461-1  Holder (4) counter-clockwise.
  10. While holding the EN-52461-1  Holder (4) in the counter-clockwise position, tighten the bolt (3) 6 N.m (53 lb in) just enough to hold the EN-52461-1  Holder (4) in place.
  11. GM5843524Courtesy of GENERAL MOTORS COMPANY

    Camshaft Sprocket Bolt (1) @ Exhaust Camshaft - Tighten

    1. First Pass: 50 N.m (37 lb ft)
    2. Final Pass: 28 degrees using the EN-45059  Angle Meter
  12. GM5442955Courtesy of GENERAL MOTORS COMPANY

    EN-955 - 10 - A  Locking Pin - Remove

  13. GM5002102Courtesy of GENERAL MOTORS COMPANY

    Bolt (1, 2) - Loosen

  14. Slide the 2 EN-52461-1  Holder (3) out of the camshaft sprockets.
  15. GM5002065Courtesy of GENERAL MOTORS COMPANY

    Loosen the 2 bolts (1, 4) of EN-52461-100  Adapter Cam Phaser Torque Reaction Tool (5).

  16. Remove the EN-52461  Cam Phaser Torque Reaction Tool (5) along with the 2 EN-52461-100  Adapter Cam Phaser Torque Reaction Tool (2, 3) from the engine.
  17. GM5149274Courtesy of GENERAL MOTORS COMPANY

    Remove the EN-52462-A  Camshaft Tool (1) by rotating the levers in direction of arrows.

  18. GM5517369Courtesy of GENERAL MOTORS COMPANY

    Loosen and disengage the bolt (2) from EN-52462-A  Camshaft Alignment Tool (1).

  19. EN-52462-A  Camshaft Alignment Tool (1) - Remove
  20. GM5525924Courtesy of GENERAL MOTORS COMPANY

    Clean and apply sealant to the camshaft cover opening plugs (1). Adhesives, Fluids, Lubricants, and Sealers 

  21. Camshaft Cover Opening Plug (1) - Install and tighten [2x] 20 N.m (15 lb ft)
  22. GM5285267Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness (2) - Reposition

  23. Retainer (1) - Install [2x]
  24. Timing Chain Upper Cover - Install - Timing Chain Upper Cover Replacement 
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