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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 >> Installation

Spring(S), Valve: Installation

WARNING: This page is about a different variant/trim than selected.
NOTE:

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

  1. Install a new valve guide seal.
    NOTE:

    The intake spring retainer has a longer free length compared to the exhaust spring retainer.

  2. Install the valve spring.
  3. Install the valve spring retainer.
    GC0148525Courtesy of CHRYSLER GROUP, LLC
  4. Using the (special tool #9065C, Compressor, Valve Spring) (2) and the (special tool #9065-3, Adapter, Valve Spring Compressor) (1), compress the valve spring and install the valve spring retainer locks.
    GC0081829Courtesy of CHRYSLER GROUP, LLC
  5. Remove the (special tool #9065C, Compressor, Valve Spring) (2) and the (special tool #9065-3, Adapter, Valve Spring Compressor).
  6. Release the air charge (1) in the cylinder.
    CAUTION:

    Verify that the pushrods are fully seated into the lifters and the rocker arms. Recheck after rocker arm shaft has been torqued to specification.

  7. Install the rocker arm shaft and push rods. Refer to ROCKER ARM, VALVE, INSTALLATION .
    Fig 1: Rocker Shafts Retaining Bolt Removal & Tightening Sequence
    GC0088038Courtesy of CHRYSLER GROUP, LLC
  8. Using the sequence shown in the illustration in the illustration, tighten the rocker shaft bolts as follows:
    • Snug to 10 N.m (7 ft. lbs.)
    • Torque to 23 N.m (17 ft. lbs.)
    • Individually loosen by 1/2 turn and re-torque to 23 N.m (17 ft. lbs.)
    • Finally, Rotate 30 degrees
    GC0095603Courtesy of CHRYSLER GROUP, LLC
  9. Remove the (special tool #9070, Retainer, Push Rod) (1).
  10. Install the cylinder head cover. Refer to COVER(S), CYLINDER HEAD, INSTALLATION .
  11. Install the air cleaner body. Refer to BODY, AIR CLEANER, INSTALLATION .
  12. Connect the negative battery cable.