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Home >> Chevrolet >> 2017 >> Malibu LS >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 19 (Engine Mechanical - 2.0L (LTG)) >> Repair Instructions - On Vehicle >> Camshaft Timing Chain and Tensioner Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Install the timing chain oil nozzle (1).
    Fig 1: Timing Chain Oil Nozzle
    GM2742549Courtesy of GENERAL MOTORS COMPANY
    NOTE: Ensure the timing chain oil nozzle is rotated with the notch facing upward and aligned with the tab on the engine block.
  2. Loop the timing chain over the intake and exhaust camshaft actuators, aligning one of the same colored links (2) with the timing mark on the exhaust camshaft actuator (3).
    Fig 2: Timing Chain Oil Nozzle
    GM2744255Courtesy of GENERAL MOTORS COMPANY
    NOTE: There are three colored links on the timing chain. The two links that align to the timing marks on the actuators are the same color. The timing link that aligns with the timing mark on the crankshaft sprocket is a unique color. Use the following procedure to line up the links with the actuators. Orient the chain so that the colored links are visible.
  3. Ensure the crankshaft key in the 12 O'clock position. Loop the timing chain onto the crankshaft sprocket.
    NOTE: The same colored link corresponding to the intake actuator will not initially align with the intake actuator timing mark, nor the unique colored timing chain link align with the crankshaft sprocket timing mark.
  4. Install the timing chain guide (2) and upper bolt (1) only, finger tight.
    Fig 3: Timing Chain Guides And Bolts
    GM2877275Courtesy of GENERAL MOTORS COMPANY
    NOTE: Timing will be established before the final install and torque of the guide bolts.
  5. Install the timing chain tensioner pivot arm (3).
  6. Install the pivot arm bolt (1) finger tight.
  7. With a suitable tool, rotate the crankshaft counterclockwise to align the timing mark on the crankshaft sprocket (1) with the timing link (2).
    Fig 4: Crankshaft Sprocket
    GM2877278Courtesy of GENERAL MOTORS COMPANY
  8. Rotate the lower end of the fixed timing chain guide into installation position and install the lower bolt (3).
    NOTE:
    • Continue to rotate the crankshaft counterclockwise as necessary to maintain timing alignment.
    • Ensure that the alignment mark on the exhaust camshaft actuator remains aligned with the timing link.
  9. Tighten the timing chain guide upper and lower bolts to 25 N.m (18 lb ft).
    CAUTION: Refer to Fastener Caution .
  10. Using a suitable tool, rotate the intake camshaft counterclockwise until the timing mark on the intake actuator (2) is aligned with the timing link (1). Maintain tension on intake camshaft until the timing chain tensioner can be installed and activated.
    Fig 5: Timing Mark On Intake Actuator
    GM2877283Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • The timing for the exhaust camshaft actuator and the crankshaft sprocket has been established.
    • Applying or loosening pressure by hand between the timing chain guides will allow the chain to slip or bind during counterclockwise rotation of the camshaft.
  11. Timing Chain Tensioner Gasket (3) - Install
    Fig 6: Timing Chain Tensioner Bolts And Timing Chain Tensioner
    GM2812837Courtesy of GENERAL MOTORS COMPANY
    NOTE: Use a NEW gasket.
  12. Timing Chain Tensioner (2) - Install
  13. Timing Chain Tensioner Bolt (1) - Install and tighten [2x] 25 N.m (18 lb ft)
  14. Verify the timing links on the timing chain are properly aligned to the timing marks:
    Fig 7: Timing Chain Oil Nozzle
    GM2744255Courtesy of GENERAL MOTORS COMPANY
    1. The timing links (1, 2) are aligned to the appropriate timing marks on the camshaft actuators (6, 3).
    2. The unique colored link (5) is aligned to the timing mark on the crankshaft sprocket (4).
  15. If they are not, repeat the portion of the procedure necessary to align the timing marks.
  16. Install the timing chain guide (1) and bolts (2, 3) finger tight.
    Fig 8: Upper Timing Chain Guide Bolts
    GM2742534Courtesy of GENERAL MOTORS COMPANY
  17. Tighten the front camshaft cap bolts in sequence to 10 N.m (7 lb ft) twice.
    Fig 9: Front Camshaft Cap Bolt Tightening Sequence
    GM2744053Courtesy of GENERAL MOTORS COMPANY
  18. Rotate the crankshaft clockwise to see if either of the actuators or the crankshaft sprocket jump timing chain teeth. If this occurs, repeat procedure to align the timing marks.
  19. Rotate the crankshaft slightly in clockwise direction to allow chain to settle on actuator and sprocket teeth. If the timing chain jumps actuator teeth, repeat procedure to align the timing marks.
    Fig 10: Timing Link Lines & Timing Mark
    GM2744254Courtesy of GENERAL MOTORS COMPANY
    NOTE: Due to the difference of crankshaft sprocket and balance shaft sprocket, timing marks on the chain will not match during every crankshaft revolution. Ensure that the marks on the sprockets are aligned appropriately before installing the timing chain.
  20. Verify the timing links on both the timing chain & balance chain are properly aligned to the timing marks:
    1. The timing link (1) is aligned to the timing mark on the crankshaft sprocket (2).
    2. The adjacent timing links (4) are aligned with both timing marks (3) on the balancer shaft driven sprocket.
  21. The timing chain links (1, 2) are aligned to the appropriate timing marks on the camshaft actuators (6, 3).
    Fig 11: Timing Chain Oil Nozzle
    GM2744255Courtesy of GENERAL MOTORS COMPANY
    NOTE: Because of slight clockwise rotation all chain marks may be advanced slightly in relation to the actuator and sprocket marks, yet still align.
  22. Install the engine front cover. Refer to Engine Front Cover Replacement .
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