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Home >> Chevrolet >> 2020 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Engine Mechanical - 1.8L (LKN)) >> Repair Instructions - On Vehicle >> Exhaust Camshaft Replacement >> Installation Procedure

Installation Procedure

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  1. GM3216241Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A second technician is required.

    Hold tension to the camshaft timing chain with 2 hands.

  2. GM3216238Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    A second technician is required.

    Set the crankshaft in direction of engine rotation to 60 degrees (a) before TDC of cylinder 1. Use the EN-45059  angle meter and the crankshaft balancer absorber bolt (1).

  3. Lay the camshaft timing chain between the timing chain guides.
  4. GM4310271Courtesy of GENERAL MOTORS COMPANY

    Coat with MoS 2 lubricating paste or engine oil. Refer to Adhesives, Fluids, Lubricants, and Sealers .

  5. Install the exhaust camshaft (1).
    6. NOTE:

    Note the identification marking on the camshaft bearing cover.

  6. Install the 5 exhaust camshaft bearing caps (4) to the cylinder head.
  7. Install the exhaust bearing front cap (3) to the cylinder head.
  8. Loosely install the 12 exhaust camshaft bearing cap bolts (2).
  9. GM4310284Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    Tighten the 12 exhaust camshaft bearing cap bolts (1) in sequence shown to 9 N.m (80 lb in), working from inside to outside in a spiral.

  10. GM2968114Courtesy of GENERAL MOTORS COMPANY

    Install the exhaust camshaft position actuator adjuster (1).

  11. Mind the camshaft pin (2), the exhaust camshaft position actuator adjuster does fit in only one position.
  12. Install and hand tighten a NEW exhaust camshaft position actuator adjuster bolt (3).
  13. GM3216249Courtesy of GENERAL MOTORS COMPANY

    Install the EN-51148  holding tool (1) to camshafts and to the cylinder head.

    1. Turn the camshafts at the camshaft position actuator adjuster bolts (5, 6) until the EN-51148  holding tool fits.
    2. Tighten the bolt (3) in the middle.
    3. Tighten the 2 outer bolts (2, 4).
  14. Tighten the exhaust camshaft position actuator adjuster bolts (6) in 2 passes:
    1. First pass to 65 N.m (48 lb ft).
    2. Final pass to an additional 120 - 135 degrees, using the EN-45059  meter.
  15. GM3216237Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Second technician is required.

    Hold tension to the camshaft timing chain with 2 hands.

  16. GM3213250Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Second technician is required.

    Adjust the engine to cylinder 1 top dead center (TDC) of combustion stroke. Set crankshaft in direction of engine rotation until the markings (2) and (3) line up. Rotate at the crankshaft balancer absorber bolt (1).

  17. GM3216240Courtesy of GENERAL MOTORS COMPANY

    Install the camshaft timing chain to the camshaft position actuator adjuster.

  18. Ensure that the self-made colored links (1, 2) match to the marks on the camshaft position adjuster actuators.
  19. Timing Chain Tensioner Replacement  - Install
  20. GM2968108Courtesy of GENERAL MOTORS COMPANY

    Push the timing chain guide - left side (2) in the direction of the arrow.

  21. Remove the 2mm drill bit, or equivalent (3) from the tensioner (1).
  22. GM2968105Courtesy of GENERAL MOTORS COMPANY

    Loosen the EN-51148  holding tool bolts (2, 3, 4).

  23. Remove the EN-51148  holding tool (1).
  24. Timing Chain Upper Guide Replacement  - Install
  25. Check the position of the crankshaft, camshaft and camshaft position actuator adjuster.
    1. Turn crankshaft 720 degrees in the direction of engine rotation by the crankshaft balancer absorber bolt.
    2. GM3213250Courtesy of GENERAL MOTORS COMPANY

      Adjust the engine to cylinder 1 top death center (TDC) of combustion stroke. Set crankshaft in direction of engine rotation until the markings (2) and (3) line up. Rotate at the crankshaft balancer absorber bolt (1).

    3. GM2968105Courtesy of GENERAL MOTORS COMPANY

      Install the EN-51148  holding tool (1) to camshafts and to the cylinder head.

      1. Tighten the bolt (3) in the middle.
      2. Tighten the 2 both outer bolts (2, 4).
    4. If EN-51148  holding tool can be installed, the engine timing is properly adjusted.
    5. Remove the middle bolt (3) and the 2 outer bolts (2, 4 and remove the EN-51148  holding tool (1).
  26. Engine Front Cover Replacement - Upper  - Install
  27. Camshaft Cover Replacement  - Install
  28. Front Wheelhouse Liner- Right Side - Install - FRONT WHEELHOUSE LINER REPLACEMENT - RIGHT SIDE (LKN)
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