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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 >> Installation >> Right Cylinder Head

Right Cylinder Head

WARNING: This page is about a different variant/trim than selected.
Fig 1: Checking Cylinder Head Bolts for Stretching (Necking)
GC0003903Courtesy of CHRYSLER LLC
NOTE: The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down (2) the bolts should be replaced.

Necking (2) can be checked by holding a straight edge against the threads. If all the threads do not contact the scale (2), the bolt should be replaced.

Fig 2: Proper Tool Usage For Surface Preparation
GC0003904Courtesy of CHRYSLER LLC
1 - PLASTIC/WOOD SCRAPER
CAUTION: When cleaning cylinder head and cylinder block surfaces, DO NOT use a metal scraper because the surfaces could be cut or ground. Use only a wooden or plastic scraper (1).
  1. Clean the cylinder head and cylinder block mating surfaces.
    Fig 3: Cylinder Head Tightening Sequence
    GC0003901Courtesy of CHRYSLER LLC
  2. Position the new cylinder head gasket on the locating dowels.
    CAUTION: When installing cylinder head, use care not damage the tensioner arm or the guide arm.
  3. Position the cylinder head onto the cylinder block. Make sure the cylinder head seats fully over the locating dowels.
    NOTE: The four M8 cylinder head mounting bolts (11 - 14) require sealant to be added to them before installing. Failure to do so may cause leaks.
  4. Lubricate the cylinder head bolt threads with clean engine oil and install the ten M10 bolts.
  5. Coat the four M8 cylinder head bolts with Mopar® Thread Sealant with PTFE  then install the bolts.
    NOTE: The cylinder head bolts are tightened using an angle torque procedure.
  6. Tighten the bolts in sequence using the following steps and torque values:
    1. Tighten bolts 1 - 10 to 27 N.m (20 ft. lbs.).
    2. Verify that bolts 1 - 10 have all reached 27 N.m (20 ft. lbs.), by repeating step 1 without loosening the bolts.
    3. Tighten bolts 11 - 14 to 14 N.m (89 in. lbs.).
    4. Rotate bolts 1 - 10 an additional 90°.
    5. Rotate bolts 1 - 10 an additional 90° again.
    6. Tighten bolts 11 - 14 to 26 N.m (19 ft. lbs).
    Fig 4: Positioning Secondary Chain Onto Camshaft Drive Gear
    GC0003899Courtesy of CHRYSLER LLC
    1 - LEFT CYLINDER HEAD
    2 - RIGHT CYLINDER HEAD
  7. Position the secondary chain onto the camshaft drive gear, making sure one marked chain link is on either side of the V8 mark on the gear (2) and position the gear onto the camshaft.
  8. Install the camshaft drive gear retaining bolt.
  9. Install the right side secondary chain guide. See INSTALLATION .
    Fig 5: Cylinder Head Access Plugs
    GC0003902Courtesy of CHRYSLER LLC
    1 - RIGHT CYLINDER HEAD ACCESS PLUG
    2 - LEFT CYLINDER HEAD ACCESS PLUG
  10. Install the right side cylinder head access plug (1).
  11. Re-set and install the right side secondary chain tensioner.
    Fig 6: Using Special Tool 8515 To Lock Chains To Idler Sprocket
    GC0003895Courtesy of CHRYSLER LLC
    1 - LOCK ARM
    2 - RIGHT CAMSHAFT CHAIN
    3 - SECONDARY CHAINS RETAINING PINS (4)
    4 - IDLER SPROCKET
    5 - LEFT CAMSHAFT CHAIN
    6 - SECONDARY CAMSHAFT CHAIN HOLDER 8429
  12. Remove Secondary Camshaft Chain Holder 8429 (6).
  13. Install the timing chain cover. See INSTALLATION .
  14. Install the crankshaft damper. See INSTALLATION .
  15. Install accessory drive belt.
  16. Install the fan shroud.
    Fig 7: Cylinder Head Cover-Right
    GC0003900Courtesy of CHRYSLER LLC
    ITEM  DESCRIPTION  TORQUE 
    1 Cover Fasteners 12 N.m (105 in. lbs.)
  17. Install the cylinder head cover (1). See INSTALLATION .
    Fig 8: Intake Manifold Tightening Sequence
    GC0070002Courtesy of CHRYSLER LLC
  18. Install the intake manifold. See INSTALLATION .
  19. Install oil fill housing onto cylinder head.
  20. Refill the cooling system. Refer to STANDARD PROCEDURE .
  21. Raise the vehicle.
  22. Drain oil.
  23. Install the exhaust pipe onto the right exhaust manifold.
  24. Lower the vehicle.
  25. Fill with new engine oil.
  26. Reconnect battery negative cable.
  27. Start the engine and check for leaks.