Commander 2006-2007

Timing Chain Cover & Seal

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Removal & Installation



3.7L Engine
  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Disconnect the battery negative cable.
  4.  
  5. Drain the cooling system.
  6.  
  7. Remove electric cooling fan and fan shroud assembly.
  8.  
  9. Remove the radiator fan.
  10.  
  11. Disconnect both heater hoses at timing cover.
  12.  
  13. Disconnect lower radiator hose at engine.
  14.  
  15. Remove accessory drive belt tensioner assembly
  16.  
  17. Remove the crankshaft damper.
  18.  
  19. Remove the alternator and A/C compressor.
    WARNING
    The 3.7L engine uses an anaerobic sealer instead of a gasket to seal the front cover to the engine block, from the factory. For service, Mopar° Grey Engine RTV sealant must be substituted.


    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.

    Click image to see an enlarged view

    Fig. Timing cover bolt removal sequence

  22.  
  23. Remove the timing cover.
  24.  

To install:


WARNING
Do not use oil based liquids to clean timing cover or block surfaces. 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.

  1. Clean the timing chain cover and block surface using rubbing alcohol.
    WARNING
    The 3.7L uses a special anaerobic sealer instead of a gasket to seal the timing cover to the engine block, from the factory. For service repairs, Mopar® Engine RTV must be used as a substitute.

  2.  
  3. Inspect the water passage O-rings for any damage, and replace as necessary.

    Click image to see an enlarged view

    Fig. Front cover sealant application-3.7L engine

  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

  8.  
  9. Install crankshaft damper.
  10.  
  11. Install the A/C compressor and alternator.
  12.  
  13. Install accessory drive belt tensioner assembly.
  14.  
  15. Install radiator upper and lower hoses.
  16.  
  17. Install both heater hoses.
  18.  
  19. Install electric cooling fan and fan shroud assembly.
  20.  
  21. Install radiator fan.
  22.  
  23. Refill the cooling system to the correct level.
  24.  
  25. Connect negative cable to battery.
  26.  

4.7L Engine
  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Disconnect the battery negative cable.
  4.  
  5. Drain the cooling system.
  6.  
  7. Disconnect both heater hoses at timing cover.
  8.  
  9. Disconnect lower radiator hose at engine.
  10.  
  11. Remove crankshaft damper.
  12.  
  13. Remove accessory drive belt tensioner assembly
  14.  
  15. Remove the alternator and A/C compressor.
    WARNING
    The 4.7L engine uses an anaerobic sealer instead of a gasket to seal the front cover to the engine block, from the factory. For service, Mopar° Grey Engine RTV sealant must be substituted.


    NOTE
    It is not necessary to remove the water pump for timing cover removal.

  16.  
  17. Remove the bolts holding the timing cover to engine block.

    Click image to see an enlarged view

    Fig. Timing cover bolt removal sequence

  18.  
  19. Remove the timing cover.
  20.  

To install:


WARNING
Do not use oil based liquids to clean timing cover or block surfaces. 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.

  1. Clean the timing chain cover and block surface using rubbing alcohol.
    WARNING
    The 4.7L uses a special anaerobic sealer instead of a gasket to seal the timing cover to the engine block, from the factory. For service repairs, Mopar® Engine RTV must be used as a substitute.

  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

  8.  
  9. Install the A/C compressor and alternator.
  10.  
  11. Install crankshaft damper.
  12.  
  13. Install accessory drive belt tensioner assembly.
  14.  
  15. Install radiator upper and lower hoses.
  16.  
  17. Install both heater hoses.
  18.  
  19. Refill the cooling system to the correct level.
  20.  
  21. Connect negative cable to battery.
  22.  

5.7L Engines
  1. Disconnect the negative battery cable.
  2.  
  3. Remove the engine cover.
  4.  
  5. Remove the air cleaner assembly.
  6.  
  7. Drain the cooling system.
  8.  
  9. Remove the accessory drive belt.
  10.  
  11. Remove the cooling fan.
  12.  
  13. Remove the coolant bottle and washer bottle.
  14.  
  15. Remove the fan shroud.
    NOTE
    It is not necessary to disconnect A/C lines or discharge Freon.

  16.  
  17. Remove the A/C compressor and set aside.
  18.  
  19. Remove the alternator.
  20.  
  21. Remove the upper radiator hose.
  22.  
  23. Disconnect both heater hoses at the timing cover.
  24.  
  25. Disconnect the lower radiator hose at the engine.
  26.  
  27. Remove the accessory drive belt tensioner and both idler pulleys.
  28.  
  29. Remove the crankshaft damper.
    NOTE
    Do not remove the hoses from the power steering pump.

  30.  
  31. Remove the power steering pump and set aside.
  32.  
  33. Remove the dipstick support bolt.
  34.  
  35. Drain the engine oil.
  36.  
  37. Remove the oil pan and pick up tube.
    NOTE
    It is not necessary to remove the water pump for timing cover removal.

  38.  
  39. Remove the timing cover bolts and remove the cover.
  40.  
  41. Verify that the timing cover slide bushings are located in the timing cover.

    Click image to see an enlarged view

    Fig. Timing cover with slide bushings-5.7L engine

  42.  

To install:

  1. Clean timing chain cover and block surface.
    NOTE
    Always install a new gasket on timing cover.

  2.  
  3. Verify that the slide bushings are installed in timing cover
  4.  
  5. Install cover and new gasket. Tighten fasteners to 250 inch lbs. (28 Nm).
    NOTE
    The large lifting stud is tightened to 40 ft. lbs. (55 Nm).

  6.  
  7. Install the oil pan and pick up tube.
  8.  
  9. Install the A/C compressor.
  10.  
  11. Install the alternator.
  12.  
  13. Install power steering pump.
  14.  
  15. Install the dipstick support bolt.
  16.  
  17. Install the thermostat housing.
  18.  
  19. Install crankshaft damper.
  20.  
  21. Install accessory drive belt tensioner assembly and both idler pulleys.

    Click image to see an enlarged view

    Fig. Oil pan tightening sequence

  22.  
  23. Install radiator lower hose.
  24.  
  25. Install both heater hoses.
  26.  
  27. Install radiator fan shroud.
  28.  
  29. Install the cooling fan.
  30.  
  31. Install the accessory drive belt.
  32.  
  33. Install the coolant bottle and washer bottle.
  34.  
  35. Install the upper radiator hose.
  36.  
  37. Install the air cleaner assembly.
  38.  
  39. Fill cooling system.
  40.  
  41. Refill engine oil.
  42.  
  43. Connect the battery negative cable.
  44.  
  45. Install the engine cover.
  46.  

 
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