Aurora 2001-2003

Rear Main Seal

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Removal & Installation



3.5L & 4.0L Engines with a Cartridge Type Seal
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Engine and transmission assembly
     
    Transmission from the engine
     
    Flexplate
     

  4.  
  5. Remove the seal as follows:
    1. Place Seal Removal tool J-42841 onto the crankshaft.
    2.  
    3. Install 8, 1-inch self starting screws through the guide holes of the tool and into the seal. A variable speed drill will be helpful for installing the screws.
    4.  
    5. Tighten the center screw of the tool to remove the seal.
    6.  

  6.  
  7. Clean out the drain at the bottom of the seal bore with a piece of wire or pipe cleaner.

    Click image to see an enlarged view

    Fig. Use the guide holes in tool J-42841 to install the screws in the seal-3.5L and 4.0L engines



    Click image to see an enlarged view

    Fig. Use rear main seal installer J-42842 to install the seal-3.5L engine

  8.  

To install:

  1. Apply a small amount of RTV gasket maker at the crankcase split line across the end of the upper and lower crankcase seal.
  2.  
  3. Coat the outer diameter of the rear crankshaft seal area with engine oil.
  4.  
  5. Wipe the outer diameter of the crankshaft flexplate flange with a lint-free cloth.
  6.  
  7. Lubricate the outer rubber surface of the seal with clean engine oil. DO NO