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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 - Left

Cylinder Head - Left

WARNING: This page is about a different variant/trim than selected.
  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 STANDARD PROCEDURE .
  5. Lower the vehicle.
  6. Remove the intake manifold. See REMOVAL .
  7. Remove the master cylinder and booster assembly. Refer to REMOVAL .
  8. Remove the cylinder head cover. See REMOVAL .
  9. Remove the fan shroud and fan blade assembly. Refer to REMOVAL .
  10. Remove the accessory drive belt. Refer to REMOVAL .
  11. Remove the power steering pump and set aside.
    Fig 1: Engine Top Dead Center
    GC0011743Courtesy of CHRYSLER LLC
  12. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark (2).
    Fig 2: Camshaft Sprocket V6 Marks (#1 TDC, Exhaust Stroke)
    GC0011747Courtesy of CHRYSLER LLC
  13. Verify the V6 mark (1) on the camshaft sprocket is at the 12 o'clock position, with the No. 1 cylinder at TDC on the exhaust stroke. Rotate the crankshaft one turn if necessary.
  14. Remove the vibration damper. See REMOVAL .
  15. Remove the timing chain cover. See REMOVAL .
    Fig 3: Using Special Tool 8429
    GC0011745Courtesy of CHRYSLER LLC
  16. Lock the secondary timing chains (2) to the idler sprocket using Secondary Camshaft Chain Holder 8429 (1).
    NOTE: Mark the secondary timing chain prior to removal to aid in installation.
  17. Mark the secondary timing chain (2), one link on each side of the V6 mark on the camshaft drive gear.
  18. Remove the left side secondary chain tensioner. See REMOVAL .
    Fig 4: Cylinder Head Access Plugs
    GC0011744Courtesy of CHRYSLER LLC
  19. Remove the cylinder head access plug (1) and (2).
  20. Remove the left side secondary chain guide. See REMOVAL .
  21. 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.
    NOTE: The cylinder head is attached to the cylinder block with twelve bolts.
  22. Remove the cylinder head retaining bolts.
  23. Remove the cylinder head and gasket. Discard the gasket.
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.
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