Ram 1500, 2500, 3500, 2WD and 4WD, 2001-2005

Rear Main Seal

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Removal & Installation



  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cables
     
    Transmission
     
    Clutch and pressure plate, if equipped
     
    Flywheel
     
    Seal retainer housing
     
    Rear main seal
     

  4.  

To install:

  1. Install or connect the following:

    Rear main seal. Use the alignment tool supplied with the seal kit.
     
    Seal retainer housing. Tighten the bolts to 84 inch lbs. (9 Nm).
     
    Flywheel
     
    Clutch and pressure plate, if equipped
     
    Transmission
     
    Negative battery cables
     

  2.  
  3. Start the engine and check for leaks.

    Click image to see an enlarged view

    Fig. Removing the rear seal with a sheet metal screw and slide hammer-5.9L diesel engine

    Removing the rear seal with a sheet metal screw and slide hammer-5.9L diesel engine

    Click image to see an enlarged view

    Fig. Place the alignment tool on the seal and tap the seal into place-5.9L diesel engine

    Place the alignment tool on the seal and tap the seal into place-5.9L diesel engine
  4.  

3.7L, 4.7L & 5.7L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Transmission
     
    Flexplate
     

  4.  
  5. Thread Oil Seal Remover 8506 into the rear main seal as far as possible and remove the rear main seal.
  6.  

To install:

  1. Install or connect the following:

    Seal Guide 8349-2 onto the crankshaft
     
    Rear main seal on the seal guide
     
    Rear main seal, using the Crankshaft Rear Oil Seal Installer 8349 and Driver Handle C-4171; tap it into place until the installer is flush with the cylinder block
     
    Flexplate. Torque the bolts in the sequence shown to 45 ft. lbs. (60 Nm) on auto trans., or 70 ft. lbs. (95 Nm) for man. trans.
     
    Transmission
     

  2.  
  3. Start the engine, check for leaks and repair if necessary.

    Click image to see an enlarged view

    Fig. Flexplate bolt tightening sequence-3.7L, 4.7L and 5.7L engines

    Flexplate bolt tightening sequence-3.7L, 4.7L and 5.7L engines
  4.  

3.9L, 5.2L & 5.9L Engines
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Oil pan
     
    Oil pump
     
    Rear main bearing cap
     

  6.  
  7. Loosen the other main bearing cap bolts for clearance and remove the rear main seal halves.
  8.  

To install:

  1. Install or connect the following:

    New upper seal half to the cylinder block
     
    New lower seal half to the bearing cap
     

  2.  
  3. Apply sealant to the rear main bearing cap.

    Click image to see an enlarged view

    Fig. Sealant application locations -3.9L, 5.2L and 5.9L engines

    Sealant application locations -3.9L, 5.2L and 5.9L engines
  4.  
  5. Install or connect the following:

    Rear main bearing cap. Tighten all main bearing cap bolts to 85 ft. lbs. (115 Nm).
     
    Oil pump and oil pan
     

  6.  
  7. Fill the engine.
  8.  
  9. Start the engine and check for leaks.
  10.  

  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Oil pan
     
    Oil pump
     
    Rear main bearing cap
     

  6.  
  7. Loosen the other main bearing cap bolts for clearance and remove the rear main seal halves.
  8.  

To install:

  1. Install or connect the following:

    New upper seal half to the cylinder block
     
    New lower seal half to the bearing cap
     

  2.  
  3. Apply sealant to the rear main bearing cap.

    Click image to see an enlarged view

    Fig. Sealant application locations -3.9L, 5.2L and 5.9L engines

    Sealant application locations -3.9L, 5.2L and 5.9L engines
  4.  
  5. Install or connect the following:

    Rear main bearing cap. Tighten all main bearing cap bolts to 85 ft. lbs. (115 Nm).
     
    Oil pump and oil pan
     

  6.  
  7. Fill the engine.
  8.  
  9. Start the engine and check for leaks.
  10.  

8.0L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Transmission
     
    Clutch, if equipped
     
    Flywheel
     
    Rear main seal
     

  4.  

To install:

  1. Install the rear main seal so that it is flush with the cylinder block.
  2.  
  3. Install or connect the following:

    Flywheel. Tighten the bolts to 55 ft. lbs. (75 Nm).
     
    Clutch, if equipped
     
    Transmission
     

  4.  
  5. Start the engine and check for leaks.

    Click image to see an enlarged view

    Fig. Exploded view of the rear oil seal and retainer-8.0L engine

    Exploded view of the rear oil seal and retainer-8.0L engine
  6.  

 
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