LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2015 >> Regal GS, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Engine Mechanical - 2.4L) >> Repair Instructions - On Vehicle >> Intake Camshaft and Valve Lifter Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Hydraulic Lash Adjusters
    GM1825038Courtesy of GENERAL MOTORS COMPANY
  1. Install the hydraulic lash adjusters into their bores in the cylinder head.
  2. Lubricate the hydraulic lash adjusters. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    3. Fig 2: Valve Tips
    GM1825091Courtesy of GENERAL MOTORS COMPANY
  3. Lubricate the valve tips. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    4. Fig 3: Intake Camshaft Roller Finger Followers
    GM1825036Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    Used roller followers must be returned to the original position on the camshaft. If the camshaft is being replaced, the roller followers actuated by the camshaft must also be replaced.

  4. Position the roller followers on the tip of the valve stem and on the lash adjuster. Lubricate roller followers. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    5. Fig 4: Identifying Proper Exhaust/Intake Camshaft Alignment positions
    GM1825076Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If equipped with the following engine; LE5, LE9, LAT, LNF, LDK, LHU, LTD, LBN, ensure the intake camshaft notch is in the 5 o'clock position and the exhaust camshaft notch is in the 7 o'clock position.

  5. Ensure the intake camshaft notch is in the 5 o'clock position (2) and the exhaust camshaft notch is in the 7 o'clock position (1). The number 1 piston should be at top dead center (TDC), crankshaft key at 12 o'clock.
    6. Fig 5: Camshaft Notches
    GM2224131Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    If equipped with following engine; LAP, LE8, LEA, LUK, and beyond ensure the intake camshaft notch is in the 10 o'clock position and the exhaust camshaft notch is in the 7 o'clock position.

  6. Ensure the intake camshaft notch is in the 10 o'clock position (2) and the exhaust camshaft notch is in the 7 o'clock position (1). The number 1 piston should be at top dead center (TDC), crankshaft key at 12 o'clock.
    7. Fig 6: Intake Camshaft & Caps
    GM1825077Courtesy of GENERAL MOTORS COMPANY
  7. Set the intake camshaft on top of the roller followers in the camshaft bearing journals and lubricate. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    8. Fig 7: Oil Seals
    GM1846063Courtesy of GENERAL MOTORS COMPANY
  8. Rotate the oil seal in the groove of the number one camshaft journal so the split line (1) is at approximately the 12:00 position before installing the camshaft caps.
    9. Fig 8: Camshaft Notches
    GM2224131Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    The number 1 cylinder must be at top dead center (TDC), crankshaft keyway at the 12 o'clock position.

  9. Install the intake camshaft with the notch on the front at approximately the 10 o'clock position (2).
  10. Install the camshaft caps and hand start the camshaft cap bolts.
    11. CAUTION:

    Refer to Fastener Caution .

  11. Tighten the camshaft cap bolts in increments of 3 turns until they are seated. Tighten the camshaft caps to 10 N.m (89 lb in).
    12. Fig 9: Sealer Application Areas
    GM1825078Courtesy of GENERAL MOTORS COMPANY
    NOTE:

    It is critical during installation to ensure the bearing rear cap and cylinder head alignment is correct and the mating surfaces are flush.

    • Ensure that all sealing material has been removed from the components, and the sealing surfaces are clean and free of contamination prior to applying the sealer.
    • Install and align the rear cap within 20 minutes of applying the sealer.
    NOTE:

    Apply the sealer to all locations centrally locating the bead on the rail.

    • Run bead to 5.0 mm, dimension a, as shown.
    • Where the cap ends on the perimeter rail, extend bead approximately 4.0 mm beyond edge of cap.
    • Run bead, dimension c, 32 mm from the edge of the cylinder head as shown.
    • Run beads, dimension b, 20 mm from edge of cylinder head as shown.
  12. Apply a 2.5 mm bead of sealer to the cylinder head at the number 6 intake camshaft rear cap mating surface. Refer to Adhesives, Fluids, Lubricants, and Sealers .
  13. Install the number 6 intake camshaft rear cap.
    1. Tighten the cap bolts evenly to 5 N.m (44 lb in).
    2. Tighten the cap bolts evenly to 10 N.m (89 lb in).
    3. Back the cap bolts out 120 degrees.
    4. Tighten the cap bolts evenly a final pass to 10 N.m (89 lb in).
    14. Fig 10: Identifying Fuel Pump Roller Lifter Orifice
    GM2244396Courtesy of GENERAL MOTORS COMPANY
  14. Remove all excess sealing material from the fuel pump roller lifter bore (1), and ensure the bore is free of debris. Do not allow any excess sealing material to remain within the cylinder head or on any sealing surface.
  15. Remove all excess sealing material from the fuel pump assembly sealing surface (2).
  16. Install the fuel pump. Refer to Fuel Pump Replacement .
    17. Fig 11: Rear Cylinder Head Cover Plate
    GM2209837Courtesy of GENERAL MOTORS COMPANY
  17. Verify the seal on the cylinder head cover plate (1) is intact and in good condition.
  18. Ensure that the opening plate sealing surface is clean and free of excess sealing material. Install the rear cylinder head opening plate (1) and tighten the bolts to 10 N.m (89 lb in).
    19. Fig 12: Intake Camshaft Position Actuator Solenoid Valve & Bolt
    GM2074533Courtesy of GENERAL MOTORS COMPANY
  19. Install the intake camshaft position actuator solenoid valve (2). Tighten the solenoid valve bolt (1) to 10 N.m (89 lb in).
  20. Install the intake camshaft position actuator. Refer Camshaft Position Intake Actuator Replacement .
scientia non olet · About LEMON Manuals