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Home >> Jeep >> 2007 >> Commander Limited, 5.7 2, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 2 (3.7L Engine (Service Information)) >> Cylinder Head >> Removal >> Cylinder Head - Right

Cylinder Head - Right

WARNING: This page is about a different variant/trim than selected.
Fig 1: Engine Top Dead Center (TDC) Indicator Mark
GC0003811Courtesy of CHRYSLER LLC
1 - TIMING CHAIN COVER
2 - CRANKSHAFT TIMING MARKS
  1. Disconnect battery negative cable.
  2. Raise the vehicle on a hoist.
  3. Disconnect the exhaust pipe at the right side exhaust manifold.
  4. Drain the engine coolant. Refer to STANDARD PROCEDURE .
  5. Lower the vehicle.
  6. Remove the intake manifold. See REMOVAL .
  7. Remove the cylinder head cover. See REMOVAL .
  8. Remove the fan shroud. Refer to REMOVAL .
  9. Remove oil fill housing from cylinder head.
  10. Remove accessory drive belt. Refer to REMOVAL .
  11. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark (2). See Fig 1.
    Fig 2: Camshaft Sprocket V6 Marks
    GC0003812Courtesy of CHRYSLER LLC
  12. Verify the V6 mark on the camshaft sprocket is at the 12 o'clock position. See Fig 2. Rotate the crankshaft one turn if necessary.
  13. Remove the crankshaft damper. See REMOVAL .
  14. Remove the timing chain cover. See REMOVAL .
    Fig 3: Locking Secondary Timing Chains
    GC0003794Courtesy of CHRYSLER LLC
    1 - SPECIAL TOOL 8429
    2 - CAMSHAFT CHAIN
    3 - CRANKSHAFT TIMING GEAR
  15. Lock the secondary timing chains to the idler sprocket using the Secondary Camshaft Chain Holder 8429 (1). See Fig 3.
    NOTE: Mark the secondary timing chain prior to removal to aid in installation.
  16. Mark the secondary timing chain, one link on each side of the V6 mark on the camshaft drive gear.
  17. Remove the right side secondary chain tensioner. See REMOVAL .
    Fig 4: Locating Cylinder Head Access Plugs
    GC0003813Courtesy of CHRYSLER LLC
    1 - RIGHT CYLINDER HEAD ACCESS PLUG
    2 - LEFT CYLINDER HEAD ACCESS PLUG
  18. Remove the cylinder head access plug (1, 2). See Fig 4.
  19. Remove the right side secondary chain guide. See REMOVAL .
    CAUTION: The nut on the right side camshaft sprocket should not be removed for any reason, as the sprocket and camshaft sensor target wheel is serviced as an assembly. If the nut was removed, tighten nut to 5 N.m (44 in. lbs.).
  20. Remove the retaining bolt and the camshaft drive gear.
    CAUTION: Do not allow the engine to rotate. severe damage to the valve train can occur.
    CAUTION: Do not overlook the four smaller bolts at the front of the cylinder head. Do not attempt to remove the cylinder head without removing these four bolts.
    CAUTION: Do not hold or pry on the camshaft target wheel for any reason. A damaged target wheel can result in a vehicle no start condition.
    Fig 5: Cylinder Head Bolt Tightening Sequence
    GC0003799Courtesy of CHRYSLER LLC
    * - INDICATES SEALANT ON THREADS
    NOTE: The cylinder head is attached to the cylinder block with twelve bolts.
  21. Remove the cylinder head retaining bolts. See Fig 5.
  22. Remove the cylinder head and gasket. Discard the gasket.
CAUTION: Do not lay the cylinder head on its gasket sealing surface, do to the design of the cylinder head gasket any distortion to the cylinder head sealing surface may prevent the gasket from properly sealing resulting in leaks.
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