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Home >> Jeep >> 2018 >> Grand Cherokee Laredo, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 28 (6.2L Engine (Service Information)) >> Cylinder Head >> Spring(S), Valve >> Removal

Spring(S), Valve: Removal

WARNING: This page is about a different variant/trim than selected.
  1. Disconnect and isolate the negative battery cable.
  2. Remove the air cleaner body. Refer to BODY, AIR CLEANER, REMOVAL .
  3. Remove the cylinder head covers. Refer to COVER(S), CYLINDER HEAD, REMOVAL .
    GC0081828Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    The piston must be at TDC, and both valves closed on the cylinder to be serviced.

    NOTE:

    The intake push rods can fall into the engine and become lodged in the oil pan, if removing intake rocker arm shaft, install the push rod retainer (special tool #9070, Retainer, Push Rod) (1) to retain the intake push rods (2).

  4. Install the push rod retainer (special tool #9070, Retainer, Push Rod) (1) onto the cylinder head.
  5. Clip the push rods (2) into the push rod retainer (1).
    GC0088038Courtesy of CHRYSLER GROUP, LLC
    CAUTION:

    The rocker shaft assemblies are not interchangeable between intake and exhaust. The intake rocker arms are marked with an "I".

  6. Using the sequence shown in the illustration in the illustration, remove the rocker arm shaft bolts and remove the rocker arm shaft.
    GC0095599Courtesy of CHRYSLER GROUP, LLC
  7. Install the rocker arm shaft adapter (special tool #9065C, Compressor, Valve Spring) (1).
  8. Insert an air hose (2) into the spark plug hole and charge the cylinder with air.
    GC0148524Courtesy of CHRYSLER GROUP, LLC
    NOTE:

    A fulcrum assembly (1) must be rotated to the appropriate setting as marked on the tool for proper valve spring alignment.

    NOTE:

    All valve springs and seals are removed in the same manner.

    NOTE:

    Tap the top of the valve spring retainer to loosen the spring retainer locks.

  9. Install the (special tool #9065C, Compressor, Valve Spring) (1) and remove the intake valve retainer locks.
  10. Release the valve spring compressor and remove the valve springs.
    GC0148525Courtesy of CHRYSLER GROUP, LLC
  11. Install the (special tool #9065C, Compressor, Valve Spring) (2) and the (special tool #9065-3, Adapter, Valve Spring Compressor) (1) and remove the exhaust valve retainer locks.
  12. Release the valve spring compressor and remove the valve spring.
    NOTE:

    The valve springs are interchangeable between intake and exhaust.

  13. Remove and discard the valve guide seal.
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