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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1353 (Engine Mechanical - 1.8L (LNK)) >> Repair Instructions >> On-Vehicle Repair Instructions >> Timing Chain and Sprockets Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Using Wrench To Hold/Rotate Camshaft
    GM625497Courtesy of GENERAL MOTORS CORP.
  1. Use a wrench in order to align the camshaft timing marks.

    Place the wrench on the hexagonal portion of the camshafts.

    2. Fig 2: Point Marks And Camshaft Gears
    GM845249Courtesy of GENERAL MOTORS CORP.
  2. Turn the camshafts in order to align the timing marks as shown (1).
    3. Fig 3: Crankshaft Keyway
    GM234304Courtesy of GENERAL MOTORS CORP.
  3. Temporarily install the crankshaft bolt.
  4. Turn the crankshaft until the crankshaft keyway (1) faces upward.
    5. Fig 4: Timing Chain And Crankshaft Timing Sprocket
    GM881599Courtesy of GENERAL MOTORS CORP.
  5. Install the following components:
    • The timing chain (2)

      Install the timing chain on the crankshaft timing sprocket with the yellow color link aligned with the mark on the crankshaft timing sprocket.

    • The crankshaft timing sprocket
    6. Fig 5: Timing Chain Shoe Bolts
    GM234315Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  6. Install the timing chain shoe. Secure the timing chain shoe using 2 bolts (1,2).

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

    7. Fig 6: Timing Chain And Timing Sprockets
    GM625502Courtesy of GENERAL MOTORS CORP.
  7. Install the timing chain (1) onto the camshafts timing sprockets (3).

    Ensure that the orange timing chain links are aligned with the timing marks.

    8. Fig 7: Timing Chain Shoe, Shoe Bolts, Chain Dampener And Dampener Bolts
    GM625486Courtesy of GENERAL MOTORS CORP.
  8. Install the timing chain dampener. Secure the timing chain dampener using one bolt (1).

    Tighten:  Tighten the bolt to 21 N.m (15 lb ft).

    9. Fig 8: Crankshaft Sensor Reluctor
    GM234359Courtesy of GENERAL MOTORS CORP.
  9. Install the crankshaft sensor reluctor (1) onto the crankshaft. Insure that the letter "F" on the reluctor is facing outward.
  10. Unlock the intake camshaft actuator locking pin. Refer to Camshaft Actuator Locking Pin Adjustment .
    11. Fig 9: Silicon Sealant Locations
    GM1243773Courtesy of GENERAL MOTORS CORP.
  11. Apply silicon sealant GM P/N 12346240 (Canadian P/N 10953493) or equivalent to the four locations (1).
  12. Apply a continuous bead of GM P/N 12346240 (Canadian P/N 10953493) or an equivalent to the timing chain cover mating surface.
    13. Fig 10: Timing Chain Cover Bolts
    GM831224Courtesy of GENERAL MOTORS CORP.
  13. Install the timing chain cover.

    Use the following 19 bolts in order to secure the cover:

    Tighten: 

    1. Tighten the bolts (1) to 21 N.m (15 lb ft).
    2. Tighten the bolts (2) to 11 N.m (8 lb ft).
    3. Tighten the bolts (3) to 9 N.m (80 lb in).
    4. Tighten the bolts (4) to 9 N.m (80 lb in).

    14. Fig 11: Ratchet Pawl, Hook Plunger And Pin
    GM234392Courtesy of GENERAL MOTORS CORP.
  14. Use the following steps in order to install the timing chain tensioner:
    1. Fully depress the plunger (4).
    2. Apply the hook (2) to the pin (3).
    3. Install the timing chain tensioner.
    15. Fig 12: Timing Chain Tensioner Bolts
    GM234394Courtesy of GENERAL MOTORS CORP.
  15. Install the timing chain tensioner. Secure the timing chain tensioner using 2 bolts (1).

    Tighten:  Tighten the bolts to 21 N.m (15 lb ft).

    16. Fig 13: Lower Drive Belt Tensioner Bolt
    GM234378Courtesy of GENERAL MOTORS CORP.
  16. Install the right side engine mounting bracket. Secure the bracket using 3 bolts.

    Tighten:  Tighten the bolts to 54 N.m (40 lb ft).

  17. Install the drive belt tensioner. Secure the tensioner using 1 bolt and 1 nut.

    Tighten: 

    • Tighten the bolt to 100 N.m (74 lb ft).
    • Tighten the nut to 29 N.m (21 lb ft).

  18. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
  19. Install the crankshaft position sensor. Secure the sensor using one bolt (5).

    Tighten:  Tighten the bolt to 12 N.m (106 lb in).

    20. Fig 14: Pinion Flange Holder
    GM234382Courtesy of GENERAL MOTORS CORP.
  20. Install the crankshaft pulley. Secure the crankshaft pulley using 1 bolt.

    Tighten:  Tighten the bolt to 118 N.m (87 lb ft).

    21. Fig 15: Steering Pump Bolts And Nuts
    GM236875Courtesy of GENERAL MOTORS CORP.
  21. Install the power steering pump.
  22. Use the following fasteners in order to secure the power steering pump:
    • The 2 bolts (1)
    • The 2 nuts

      Tighten:  Tighten the bolts to 36 N.m (27 lb ft).

  23. Install the right side engine splash shield. Refer to Splash Shield Replacement - Engine - Left in Body Front End.
  24. Lower the vehicle.
  25. Connect the power steering oil pressure switch connector.
    26. Fig 16: Rotating Crankshaft Clockwise
    GM234400Courtesy of GENERAL MOTORS CORP.
  26. Rotate the crankshaft clockwise one revolution. Ensure that the plunger on the timing chain tensioner has released.

    Complete the following steps if the plunger does not release:

    • Use a screwdriver or your finger in order to press the timing chain dampener into the timing chain tensioner.
    • Release the hook from the pin.
    • Verify proper timing chain alignment after the plunger has released.
  27. Install the cylinder head cover.
  28. Install the right side engine mount. Refer to Engine Mount Replacement .
  29. Lower the A/C receiver.

    Tighten the pinch clamps.

    30. Fig 17: Engine Support Fixture 
    GM428195Courtesy of GENERAL MOTORS CORP.
  30. Remove the engine support fixture. Refer to Engine Support Fixture .
  31. Install the generator. Refer to Generator Replacement .
  32. Fill the cooling system. Refer to Draining and Filling Cooling System .
  33. Connect the negative battery cable.

    Tighten:  Tighten the battery cable bolt to 15 N.m (11 lb ft).

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