Commander 2006-2007

Crankshaft Front Seal

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Removal & Installation



3.7L & 4.7L Engines
  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the accessory drive belt.
  6.  
  7. Remove the A/C compressor mounting bolts and set the compressor aside.
    NOTE
    It is not necessary to disconnect the A/C lines from the compressor.

  8.  
  9. Remove the upper radiator hose.
  10.  
  11. Disconnect the engine fan electrical connector, located inside the radiator shroud.
  12.  
  13. Remove the engine fan.
  14.  
  15. Remove the camshaft damper bolt.
  16.  
  17. Using Special Tool 8513 Insert and 1026 three-jaw puller, remove the crankshaft damper.

    Click image to see an enlarged view

    Fig. Using the Special Tool Insert (1) and three-jaw puller (2) to remove the crankshaft damper-3.7L & 4.7L Engines

  18.  
  19. Using Special Tool 8511, remove the crankshaft front seal.

    Click image to see an enlarged view

    Fig. Use Special Tool 8511 Seal Remover (1) to remove the crankshaft front seal-3.7L & 4.7L Engines

  20.  

To install:

  1. Using Special Tools 8348 and 8512, install the crankshaft front seal.

    Click image to see an enlarged view

    Fig. Use Special Tools 8348 (2) and 8512 (3) to install a new crankshaft front seal-3.7L & 4.7L Engines

  2.  
  3. Install the crankshaft damper as follows:
    1. Align the crankshaft damper slot with the key in the crankshaft. Slide the damper onto the crankshaft.
    2.  
    3. Assemble Special Tool 8512-A. The nut is threaded onto the threaded rod first. Then the roller bearing is placed onto the threaded rod (The hardened bearing surface of the bearing MUST face the nut). Then the hardened washer slides onto the threaded rod. Once assembled coat the threaded rod's threads with Mopar® Nickel Anti-Seize or equivalent.
    4.  
    5. Using Special Tool 8512-A, press the damper onto the crankshaft.
    6.  

  4.  
  5. Install the crankshaft damper bolt and tighten to 130 ft. lbs. (175 Nm).

    Click image to see an enlarged view

    Fig. Install the nut (2) to the threaded rod (3), then the roller bearing (1) with the hardened surface (4) facing the nut. Then install the washer (5).



    Click image to see an enlarged view

    Fig. Install the crankshaft damper using Special Tool 8512-A (1)-3.7L &4.7L Engines

  6.  
  7. Install the engine fan.
  8.  
  9. Install the upper radiator hose.
  10.  
  11. Install the A/C compressor and tighten the mounting bolts to 40 ft. lbs. (54 Nm).
  12.  
  13. Install the accessory drive belt.
  14.  
  15. Refill the cooling system to the correct level.
  16.  
  17. Connect the negative battery cable.
  18.  
  19. Start the engine and check for leaks.
  20.  

5.7L Engine
  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Remove the accessory drive belt.
  6.  
  7. Remove the upper radiator hose.
  8.  
  9. Remove the engine fan.
  10.  
  11. Remove the crankshaft damper bolt.
  12.  
  13. Using Special Tool 8513 Insert and 1026 three-jaw puller, remove the crankshaft damper.
  14.  
  15. Using Special Tool 9071, remove the crankshaft front seal.

    Click image to see an enlarged view

    Fig. Use Special Tool 9071 (1) to remove the crankshaft front seal (2)-5.7L Engine

  16.  

To install:


WARNING
The front crankshaft seal must be installed dry, without any lubricant applied to the sealing lip or outer edge.

  1. Using Special Tools 9072 and 8512-A, install the crankshaft front seal.

    Click image to see an enlarged view

    Fig. Use Special Tools 8512-A (1) and 9072 (2) to install the front crankshaft seal-5.7L Engine

  2.  
  3. Install the crankshaft damper as follows:
    1. Align the crankshaft damper slot with the key in the crankshaft. Slide the damper onto the crankshaft.
    2.  
    3. Assemble Special Tool 8512-A. The nut is threaded onto the threaded rod first. Then the roller bearing is placed onto the threaded rod (The hardened bearing surface of the bearing MUST face the nut). Then the hardened washer slides onto the threaded rod. Once assembled coat the threaded rod's threads with Mopar® Nickel Anti-Seize or equivalent.
    4.  
    5. Using Special Tool 8512-A, press the damper onto the crankshaft.
    6.  

  4.  
  5. Install the crankshaft damper bolt and tighten to 129 ft. lbs. (176 Nm).
  6.  
  7. Install the engine fan.
  8.  
  9. Install the upper radiator hose.
  10.  
  11. Install the accessory drive belt.
  12.  
  13. Refill the cooling system to the correct level.
  14.  
  15. Connect the negative battery cable.
  16.  
  17. Start the engine and check for leaks.
  18.  

 
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