Liberty, Wrangler 2006-2007

Timing Chain Cover & Seal

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Removal & Installation



3.7L Engine
  1. Disconnect the battery negative cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove electric cooling fan and fan shroud assembly.
  6.  
  7. Remove radiator fan.
  8.  
  9. Disconnect both heater hoses at timing cover.
  10.  
  11. Disconnect lower radiator hose at engine.
  12.  
  13. Remove accessory drive belt tensioner assembly.
  14.  
  15. Remove crankshaft damper.
  16.  
  17. Remove the generator.
  18.  
  19. Remove A/C compressor.
    NOTE
    It is not necessary to remove the water pump for timing cover removal.

  20.  
  21. Remove the bolts holding the timing cover to engine block.
  22.  
  23. Remove the timing cover.
  24.  

To install:

  1. Clean timing chain cover and block surface using rubbing alcohol. Do not use oil based liquids to clean timing cover or block surfaces.
    WARNING
    Use only rubbing alcohol, along with plastic or wooden scrapers. Use no wire brushes or abrasive wheels or metal scrapers, or damage to surfaces could result.

  2.  
  3. Inspect the water passage o-rings for any damage, and replace as necessary.
  4.  
  5. Apply Mopar® Engine RTV sealer to front cover as shown using a 3 to 4mm thick bead.
  6.  
  7. Install cover. Tighten fasteners in sequence as shown in to 43 ft. lbs. (58 Nm).

    Click image to see an enlarged view

    Fig. Timing cover bolt tightening sequence-3.7L engine

  8.  
  9. Install crankshaft damper.
  10.  
  11. Install the A/C compressor.
  12.  
  13. Install the generator.
  14.  
  15. Install accessory drive belt tensioner.
  16.  
  17. Install radiator upper and lower hoses.
  18.  
  19. Install both heater hoses.
  20.  
  21. Install radiator fan.
  22.  
  23. Fill cooling system.
  24.  

4.0L Engine
  1. Disconnect negative cable from battery.
  2.  
  3. Remove the fan and shroud.
  4.  
  5. Remove the serpentine drive belt.
  6.  
  7. Remove the crankshaft vibration damper.
  8.  
  9. Remove the timing case cover.
  10.  

To install:

  1. Replace the oil seal in the timing case cover.
  2.  
  3. Install the timing case cover and gasket.
  4.  
  5. With the key installed in the crankshaft keyway, install the vibration damper.
  6.  
  7. Install the serpentine drive belt.
  8.  
  9. Install the fan, hub assembly and shroud.
  10.  
  11. Connect negative cable to battery.
  12.  

 
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