LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2018 >> Spark LT, Automatic CVT Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 24 (Engine Controls And Fuel - 1.4L (LV7) - Repair Instructions) >> Repair Instructions >> Camshaft Position Actuator Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2017 Chevrolet Spark. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the camshaft cover. Refer to Camshaft Cover Replacement (L5Q)Camshaft Cover Replacement (LV7) .
  2. Adjust the engine to cylinder 1 top dead center (TDC) of combustion stroke. Set crankshaft in direction of engine rotation until the markings (1, 2) line up. Rotate at the crankshaft balancer bolt (3).
    Fig 1: Crankshaft Balancer Markings
    GM3682494Courtesy of GENERAL MOTORS COMPANY
  3. Check camshaft position actuator marks.
    Fig 2: Actuator Marks Stand At 12 O'clock When Cylinder 1 Is At Top Dead Center
    GM3689061Courtesy of GENERAL MOTORS COMPANY
    NOTE: The actuator marks stands at 12 O'clock, if the cylinder 1 are on top dead center.
  4. Remove the timing chain upper guide. Refer to Timing Chain Upper Guide Replacement .
  5. Install the EN 51632  camshaft locking tool (1).
    Fig 3: Camshaft Locking Tool And Camshaft Position Actuator Bolts
    GM4121386Courtesy of GENERAL MOTORS COMPANY
  6. Mark the position of the timing chain to camshaft gear.
  7. Loosen the exhaust camshaft position actuator bolt (2).
  8. Loosen the intake camshaft position actuator bolt (3).
  9. Install the EN-51691-1  timing chain retainer (1) to the exhaust side camshaft timing chain (3) and hand tighten the bolt.
    Fig 4: Timing Chain Retainer And Camshaft Timing Chains
    GM4243438Courtesy of GENERAL MOTORS COMPANY
  10. Loosely install the EN-51691-2  retainer (2) to the intake side camshaft timing chain (3).
  11. Hand tighten the thumb wheels (4, 5) securely.
  12. Tighten the exhaust side timing chain retainer bolt (6) to 5 N.m (44 lb in).
    CAUTION: Refer to Fastener Caution .
  13. Remove the EN 51632  camshaft locking tool.
  14. Install a suitable wrench (1) to the intake camshaft.
    Fig 5: Suitable Wrench And Intake Camshaft
    GM4121415Courtesy of GENERAL MOTORS COMPANY
  15. Rotate the wrench clockwise to put some pressure on the timing chain tensioner.
  16. Hold the wrench 20 - 30 seconds.
    NOTE: Hold the wrench so that the pressure of the timing chain tensioner can release slowly.
  17. Fix the EN-51397-2  retainer (1) to the intake side of the camshaft timing chain.
    Fig 6: Fixing Retainer To Intake Side Of Camshaft Timing Chain
    GM4243432Courtesy of GENERAL MOTORS COMPANY
  18. Tighten the bolt (2) of the EN-51397-2  retainer to 5 N.m (44 lb in).
  19. Remove the wrench.
  20. Ensure that enough chain slack is gained between the camshaft position actuators.
    Fig 7: Checking Chain Slack
    GM3936522Courtesy of GENERAL MOTORS COMPANY
    NOTE: The timing chain can be moved up and down between both camshaft position actuators.
  21. If not enough slack is gained between the camshaft position actuators, remove the tension of the timing chain tensioner. Refer to Camshaft Timing Chain Adjustment (L5Q)Camshaft Timing Chain Adjustment (LV7) .
  22. Remove the intake camshaft position actuator bolt (1).
    Fig 8: Intake Camshaft Position Actuator Bolt
    GM3689069Courtesy of GENERAL MOTORS COMPANY
  23. Remove the intake camshaft position actuator (2).
    NOTE: The camshaft timing chain will be held by the EN 51691  retainer.
  24. Remove the exhaust camshaft position actuator bolt (1).
    Fig 9: Exhaust Camshaft Position Actuator Bolt
    GM3689070Courtesy of GENERAL MOTORS COMPANY
  25. Remove the exhaust camshaft position actuator (2).
    NOTE: The camshaft timing chain will be held by the EN 51691  retainer.
scientia non olet · About LEMON Manuals