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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 Position Actuator and Camshaft Replacement - Exhaust >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
  1. Install the exhaust camshaft (1) and camshaft actuator (2).
    Fig 1: Camshaft Assembly
    GM2882180Courtesy of GENERAL MOTORS COMPANY
  2. Align and install camshaft actuator locking tool (2) EN 50793  into the slots of the intake camshaft actuator and mount tool to engine front cover assembly and tighten the bolts (1) to 10 N.m (89 lb in).
    Fig 2: Camshaft Actuator Locking Tool
    GM2882184Courtesy of GENERAL MOTORS COMPANY
    CAUTION: Refer to Fastener Caution .
  3. Install a NEW camshaft actuator bolt (1) and tighten to 30 N.m (22 lb ft) plus 100 degrees.
    Fig 3: Camshaft Actuator Bolt
    GM2882183Courtesy of GENERAL MOTORS COMPANY
  4. Set the exhaust camshaft on top of the roller followers in the camshaft bearing journals with the exhaust actuator timing mark at approximately the one O'clock position.
    Fig 4: Exhaust Camshaft Bearing Rear Cap Bolts And Cap
    GM2882181Courtesy of GENERAL MOTORS COMPANY
    NOTE: Apply lubricant to all lobes and journals prior to installing the camshafts.
  5. Install the camshaft cap bolts (1, 3) into the camshaft caps (2, 4).
    NOTE: To properly position the camshaft caps, install the camshaft cap bolts into the camshaft caps prior to installing the camshaft caps on the camshafts.
  6. Install the camshaft caps (2, 4) and hand start the camshaft cap bolts (1, 3).
  7. Install the front camshaft bearing cap (1). Install the timing chain guide (2) onto the front camshaft bearing cap, then hand start the camshaft cap bolts (3 - 5).
    Fig 5: Front Camshaft Bearing Cap
    GM2744051Courtesy of GENERAL MOTORS COMPANY
  8. Install the camshaft cap bolts in sequence using the following procedure:
    Fig 6: Camshaft Cap Bolts Tightening Sequence
    GM2834582Courtesy of GENERAL MOTORS COMPANY
    NOTE: During the tightening sequence, locate and tighten each camshaft cap bolt installed into the circular hole first. Then, tighten the bolt installed into the slotted hole.
    1. Tighten the camshaft cap bolts in sequence to 8 N.m (71 lb in).
    2. Loosen both bolts in each cap in sequence to 180 degrees.
    3. Tighten the camshaft cap bolts in sequence to 10 N.m (89 lb in) twice.
  9. Tighten the front camshaft cap bolts in sequence to 10 N.m (89 lb in) twice.
    Fig 7: Front Camshaft Cap Bolt Tightening Sequence
    GM2744053Courtesy of GENERAL MOTORS COMPANY
  10. Remove EN-50656  timing chain holding tool (1).
    Fig 8: Identifying Timing Chain Holding Tool
    GM2878182Courtesy of GENERAL MOTORS COMPANY
  11. Install the camshaft cover. Refer to Camshaft Cover Replacement .
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