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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-Left >> Removal >> Left Cylinder Head

Left Cylinder Head

WARNING: This page is about a different variant/trim than selected.
Fig 1: Intake Manifold Tightening Sequence
GC0070001Courtesy of CHRYSLER LLC
  1. Disconnect the negative cable from the battery.
  2. Raise the vehicle on a hoist.
  3. Disconnect the exhaust pipe at the left side exhaust manifold.
  4. Drain the engine coolant. Refer to COOLING .
  5. Lower the vehicle.
  6. Remove the intake manifold. See REMOVAL .
    Fig 2: Cylinder Head Cover-Left
    GC0003897Courtesy of CHRYSLER LLC
  7. Remove the master cylinder and booster assembly. Refer to REMOVAL .
  8. Remove the cylinder head cover (1). See REMOVAL .
    Fig 3: Engine Top Dead Center (TDC) Indicator Marks
    GC0003792Courtesy of CHRYSLER LLC
  9. Remove the fan shroud and fan blade assembly.
  10. Remove accessory drive belt.
  11. Remove the power steering pump and set aside.
  12. Rotate the crankshaft until the damper timing marks are aligned (2).
    Fig 4: Camshaft Sprocket V8 Marks
    GC0003896Courtesy of CHRYSLER LLC
    1 - LEFT CYLINDER HEAD
    2 - RIGHT CYLINDER HEAD
  13. Verify the V8 mark on the camshaft sprocket is at the 12 o'clock position. Rotate the crankshaft one turn if necessary.
  14. Remove the crankshaft damper. See REMOVAL .
  15. Remove the timing chain cover. See REMOVAL .
    Fig 5: Installing Secondary Timing Chains on Idler Sprocket
    GC0051319Courtesy of CHRYSLER LLC
  16. Lock the secondary timing chains to the idler sprocket using secondary camshaft chain holder 8429 (6).
    Fig 6: Camshaft Sprocket V8 Marks
    GC0003896Courtesy of CHRYSLER LLC
    1 - LEFT CYLINDER HEAD
    2 - RIGHT CYLINDER HEAD
    NOTE: Mark the secondary timing chain prior to removal to aid in installation.
  17. Mark the secondary timing chain, one link on each side of the V8 mark on the camshaft drive gear.
  18. Remove the left side secondary chain tensioner. See REMOVAL .
    Fig 7: Cylinder Head Access Plug Location
    GC0003793Courtesy of CHRYSLER LLC
    1 - RIGHT CYLINDER HEAD ACCESS PLUG
    2 - LEFT CYLINDER HEAD ACCESS PLUG
    CAUTION: Do not allow the engine to rotate. Severe damage to the valve train can occur.
  19. Remove the cylinder head access plug (2).
  20. Remove the left side secondary chain guide. See REMOVAL .
  21. Remove the retaining bolt and the camshaft drive gear.
    Fig 8: Cylinder Head Bolt Tightening Sequence
    GC0003898Courtesy 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.
    NOTE: The cylinder head is attached to the cylinder block with fourteen bolts.
  22. Remove the cylinder head retaining bolts using the sequence provided.
    CAUTION: Do not lay the cylinder head on its gasket sealing surface, due 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.
  23. Remove the cylinder head and gasket. Discard the gasket.
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