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ON-VEHICLE MAINTENANCE — HLA Removal & Installation notes

B-21prose procedure

Removal note

Camshaft pulley

Camshaft pulley — Removal

  1. 1
    Hold the camshaft with a wrench.
    View of camshaft pulley with wrench holding the camshaft while pulley lock bolt is removed.
    05U0BX-048
  2. 2
    Remove the camshaft pulley lock bolt.
  3. 3
    Remove the camshaft pulley.

Camshaft

Camshaft — Removal

  1. 1
    Loosen the camshaft cap bolts in two or three steps in the order shown in the figure.
    Top view of cylinder head showing numbered loosening sequence for camshaft cap bolts (numbers 1-20).
    05U0BX-049
  2. 2
    Remove the camshaft caps.
  3. 3
    Remove the camshaft.
  4. 4
    Remove the camshaft oil seal from the camshaft.

HLA

HLA — Removal

  1. 1
    Remove the HLA from the cylinder head.
    Caution: Mark the HLA with a felt pen so that they can be reinstalled in the position from which they were removed.
    Top view of cylinder head with camshafts removed, showing HLA buckets in their bores.
    05U0BX-050

Installation note

HLA

HLA — Installation

  1. 1
    Apply clean engine oil to the friction surfaces.
    Hand applying engine oil to HLA friction surfaces.
    05U0BX-051
  2. 2
    If the HLA are being reused, install them in the position from which they were removed.
  3. 3
    Verify that the HLA move smoothly in their bores.

Camshaft

Camshaft — Installation

  1. 1
    Apply clean engine oil to the camshaft journals and bearings.
    Note: The intake camshaft is grooved for the crank angle sensor drive.
    Top view of cylinder head with camshafts in place, with arrow callout to the CRANK ANGLE SENSOR DRIVE GROOVE on the intake camshaft.
    05U0BX-052
  2. 2
    Install the camshaft in position.

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