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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 >> Timing Chain Upper Cover Replacement >> Installation Procedure

Installation Procedure

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  1. Clean all sealing surfaces.
  2. Ensure proper use of room temperature vulcanizing (RTV) sealant. Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant 
  3. GM4997073Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The timing chain upper cover sealing surface must be free of contamination prior to applying the sealer.
    • Install and align the timing chain upper cover to engine block within 10 minutes of applying the sealer.
    • The timing chain upper cover must be fastened to final torque specification within 15 minutes of applying the sealer.
    • Ensure proper use of room temperature vulcanizing (RTV) sealant. Use of Room Temperature Vulcanizing (RTV) and Anaerobic Sealant 

    Apply approximately a 5 mm (0.2 in) thick bead of sealant (2) on both sides between the camshaft housing and the cylinder head. Adhesives, Fluids, Lubricants, and Sealers .

  4. Check that the 2 Pins (1) are in the camshaft housing or in the timing chain upper cover.
  5. GM4997066Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Upper Cover Seal (1) - Install NEW

  6. Timing Chain Upper Cover (2) - Install
  7. GM4997059Courtesy of GENERAL MOTORS COMPANY

    Timing Chain Upper Cover Bolt - M6 (3) - Install

  8. Timing Chain Upper Cover Bolt - M5 (2) - Install [11x]
  9. Fig 1: Identifying Timing Chain Upper Cover Bolts With Tightening Sequence
    GM4997077Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Tighten the bolts in the sequence shown.

    1. Timing Chain Upper Cover Bolt - M6 (2) - Tighten 15 N.m (11 lb ft)
    2. Timing Chain Upper Cover Bolt - M5 (1) - Tighten [11x] 8.5 N.m (75 lb in)
  10. GM4996987Courtesy of GENERAL MOTORS COMPANY

    Camshaft Position Actuator Magnet Gasket (2) - Install NEW [2x]

  11. Camshaft Position Actuator Solenoid Valve Solenoid (1, 3) - Install [2x]
  12. Camshaft Position Actuator Valve Solenoid Bolt (4) - Install and tighten [4x] 8.5 N.m (75 lb in)
  13. GM5134079Courtesy of GENERAL MOTORS COMPANY

    Engine Wiring Harness (3) - Reposition

  14. Retainer (1) @ Timing Chain Upper Cover (2) - Install [4x]
  15. GM5668957Courtesy of GENERAL MOTORS COMPANY

    Oil Filler Tube (2) - Install - Oil Filler Tube Replacement 

  16. Air Cleaner Assembly - Install - Air Cleaner Assembly Replacement