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Home >> Jeep >> 2008 >> Commander Base, 3.7 K, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (4.7L Engine (Service Information)) >> Cylinder Head-Right >> Removal >> Right Cylinder Head

Right Cylinder Head

WARNING: This page is about a different variant/trim than selected.
Fig 1: Cylinder Head Cover-Right
GC0003900Courtesy of CHRYSLER LLC
ITEM  DESCRIPTION  TORQUE 
1 Cover Fasteners 12 N.m (105 in. lbs.)
  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.
  5. Lower the vehicle.
  6. Remove the intake manifold. See REMOVAL .
  7. Remove the cylinder head cover (1). See REMOVAL .
    Fig 2: Engine Top Dead Center (TDC) Indicator Marks
    GC0003792Courtesy of CHRYSLER LLC
  8. Remove the fan shroud. Refer to REMOVAL .
  9. Remove oil fill housing from cylinder head.
  10. Remove accessory drive belt.
  11. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark (2).
    Fig 3: Camshaft Sprocket V8 Marks
    GC0003896Courtesy of CHRYSLER LLC
    1 - LEFT CYLINDER HEAD
    2 - RIGHT CYLINDER HEAD
  12. Verify the V8 mark on the camshaft sprocket is at the 12 o'clock position (2). Rotate the crankshaft one turn if necessary.
  13. Remove the crankshaft damper. See REMOVAL .
  14. Remove the timing chain cover. See REMOVAL .
    Fig 4: Installing Secondary Timing Chains On Idler Sprocket
    GC0051320Courtesy of CHRYSLER LLC
    1 - LOCK ARM
    2 - RIGHT CAMSHAFT CHAIN
    3 - SECONDARY CHAINS RETAINING PINS (4)
    4 - IDLER SPROCKET
    5 - LEFT CAMSHAFT CHAIN
    6 - SPECIAL TOOL 8429
  15. Lock the secondary timing chains to the idler sprocket using Special Tool 8429 (6).
    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 V8 mark on the camshaft drive gear.
  17. Remove the right side secondary chain tensioner. See REMOVAL .
    Fig 5: Cylinder Head Access Plug Location
    GC0003793Courtesy of CHRYSLER LLC
    1 - RIGHT CYLINDER HEAD ACCESS PLUG
    2 - LEFT CYLINDER HEAD ACCESS PLUG
  18. Remove the cylinder head access plug (1).
  19. Remove the right side secondary chain guide. See REMOVAL .
  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.
    Fig 6: Cylinder Head Tightening Sequence
    GC0003901Courtesy of CHRYSLER LLC
    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.
    NOTE: The cylinder head is attached to the cylinder block with fourteen bolts.
  21. Remove the cylinder head retaining bolts using the sequence provided.
  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.