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Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.4L) >> Repair Instructions - On Vehicle >> Cylinder Head Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Cylinder Head Gasket
    GM2660942Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    DO NOT use any sealing material.

  1. Install the cylinder head gasket (3).
  2. Install the cylinder head (2).
  3. Install NEW cylinder head bolts (1).
    4. Fig 2: Identifying Cylinder Head Bolt Tightening Sequence
    GM412510Courtesy of GENERAL MOTORS COMPANY
  4. Install and tighten the cylinder head bolts in the sequence shown. Tighten the bolts to 30 N.m (22 lb ft) plus an additional 155 degrees using the EN-45059  meter.
    5. Fig 3: Locating Front Cylinder Head Bolts
    GM1825075Courtesy of GENERAL MOTORS COMPANY
  5. Install the NEW front cylinder head bolts and tighten to 35 N.m (26 lb ft).
    6. Fig 4: Aligning Marks On Cylinder Head In Relationship To Camshaft Actuator Notches
    GM2066509Courtesy of GENERAL MOTORS COMPANY
  6. Ensure the cylinder head (1) and the camshaft (2) are correctly aligned.
    7. Fig 5: View Of Rubber Band To Pull Guides Together
    GM2066512Courtesy of GENERAL MOTORS COMPANY
  7. Remove the rubber band (1) from around the top of the upper timing chain guides (2).
  8. Install the fixed guide bolt into the cylinder bolt and tighten to 12 N.m (106 lb in).
    9. Fig 6: Fixed Timing Chain Guide Access Plug
    GM2633023Courtesy of GENERAL MOTORS COMPANY
  9. Apply sealant compound to thread and install the timing chain guide bolt access hole plug (1). Refer to Adhesives, Fluids, Lubricants, and Sealers 
  10. Install the fixed timing chain guide access plug. Tighten the chain guide plug to 90 N.m (59 lb ft).
    11. Fig 7: Intake Camshaft Actuator Bolt
    GM2633020Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure that the alignment mark made previously on the exhaust camshaft actuator is still aligned properly with the mark on the timing chain.

  11. Install the timing chain onto the intake camshaft actuator (2).
  12. Align the intake camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
  13. Install a NEW intake camshaft actuator bolt (1) until snug.
    14. Fig 8: View Of Timing Chain & Chain Retention Tool
    GM2066475Courtesy of GENERAL MOTORS COMPANY
  14. Remove the EN-48749  retention tool (1) from the intake side of the timing chain.
    15. Fig 9: Exhaust Camshaft Actuator Bolt
    GM2633017Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Ensure that the alignment mark made previously on the intake camshaft actuator is still aligned properly with the mark on the timing chain.

  15. Install the timing chain onto the exhaust camshaft actuator (3).
  16. Align the exhaust camshaft actuator alignment mark made previously with the timing chain mark and install the actuator onto the camshaft.
  17. Install a NEW exhaust camshaft actuator bolt (2) until snug.
    18. Fig 10: View Of Timing Chain Retention Tool
    GM2066482Courtesy of GENERAL MOTORS COMPANY
  18. Remove the EN-48749  retention tool (1) from the exhaust side of the timing chain.
  19. Reset and install the timing chain tensioner. Refer to Timing Chain Tensioner Replacement 
    20. Fig 11: Loosening/Tightening Camshaft Actuator Retainer Bolts
    GM2066456Courtesy of GENERAL MOTORS COMPANY
  20. Install the EN-48953  locking tool (1) to the actuators.
  21. Install the camshaft actuator locking tool bolts and tighten to 10 N.m (89 lb in).
  22. Release the tensioner by applying a counterclockwise torque on the harmonic balancer bolt and tighten the bolt to 45 N.m (33 lb ft).
  23. Tighten the NEW camshaft actuator bolt to 85 N.m (63 lb ft), plus an additional 30 degrees using the EN-45059  meter.
  24. Remove the camshaft actuator locking tool, EN-48953  locking tool.
    25. Fig 12: Upper Timing Chain Guide Bolts And Guide
    GM2633015Courtesy of GENERAL MOTORS COMPANY
  25. Install the upper timing chain guide bolts (1) and guide (2). Tighten the bolts to 10 N.m (89 lb in).
  26. Install the camshaft cover. Refer to Camshaft Cover Replacement (LUK)  or Camshaft Cover Replacement (LEA) 
  27. Install the fuel pump. Refer to Fuel Pump Replacement .
  28. Install the purge solenoid and bracket. Refer to Evaporative Emission Canister Purge Solenoid Valve Replacement .
  29. Connect all electrical connectors as necessary.
  30. Install the radiator surge tank air bleed hose to the cylinder head.
  31. Position the radiator surge tank air bleed hose clamp.
  32. Install the exhaust manifold. Refer to Exhaust Manifold Replacement (LUK, LEA) .
  33. Install the intake manifold. Refer to Intake Manifold Replacement (LEA) .
    34. Fig 13: Radiator Inlet Hose Clamp
    GM2680016Courtesy of GENERAL MOTORS COMPANY
  34. Install the radiator inlet hose to the cylinder head (2).
  35. Position the radiator inlet hose clamp (1) .
  36. Fill the cooling system. Refer to Cooling System Draining and Filling (GE 47716) .
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