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Home >> Jeep >> 2005 >> Wrangler Rubicon, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 501 (3.7L Engine (Service Information)) >> Cylinder Head - Left >> Removal

Cylinder Head - Left: Removal

WARNING: This page is about a different car, the 2005 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
  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. Refer to REMOVAL .
  7. Remove the cylinder head cover. Refer to COVER - CYLINDER HEAD .
  8. Remove the fan shroud and fan blade assembly. Refer to COOLING .
  9. Remove accessory drive belt. Refer to COOLING .
  10. Remove the power steering pump and set aside.
  11. Rotate the crankshaft until the damper timing mark is aligned with TDC indicator mark. See Fig 1.
    Fig 1: Engine Top Dead Center (TDC) Indicator Marks
    GC0003792Courtesy of DAIMLERCHRYSLER CORP.
    1 - TIMING CHAIN COVER
    2 - CRANKSHAFT TIMING MARKS
  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.
    Fig 2: CAMSHAFT SPROCKET V6 MARKS (#1 TDC, Exhaust stroke)
    GC0026101Courtesy of DAIMLERCHRYSLER CORP.
    1 - LEFT CYLINDER HEAD
    2 - RIGHT CYLINDER HEAD
  13. Remove the crankshaft damper. Refer to REMOVAL .
  14. Remove the timing chain cover.
  15. Lock the secondary timing chains to the idler sprocket using Special Tool 8429 Timing Chain Holding Fixture. See Fig 3.
    Fig 3: Using Special Tool 8429
    GC0003794Courtesy of DAIMLERCHRYSLER CORP.
    1 - SPECIAL TOOL 8429
    2 - CAMSHAFT CHAIN
    3 - CRANKSHAFT TIMING GEAR
    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 left side secondary chain tensioner. Refer to TIMING BELT/CHAIN AND SPROCKET(S) .
  18. Remove the cylinder head access plug. See Fig 4.
    Fig 4: Cylinder Head Access Plugs
    GC0003793Courtesy of DAIMLERCHRYSLER CORP.
    1 - RIGHT CYLINDER HEAD ACCESS PLUG
    2 - LEFT CYLINDER HEAD ACCESS PLUG
  19. Remove the left side secondary chain guide. Refer to TIMING BELT/CHAIN AND SPROCKET(S) .
  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.
    NOTE: The cylinder head is attached to the cylinder block with twelve bolts.
  21. Remove the cylinder head retaining bolts.
  22. 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.