Nissan Car Altima & Sentra 1999-06

Rear Main Seal

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Removal & Installation



1.6L & 2.0L Engines


Click image to see an enlarged view

Fig. Install the rear main seal using a suitable driver-1.6L and 2.0L engine

  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Transaxle
     
    Driveplate/ flywheel
     
    Oil seal retainer
     

  4.  
  5. Carefully pry the seal from the retainer. Be sure not to scratch the sealing surface of the crankshaft or oil seal bore.
  6.  

To install:

  1. Apply clean engine oil to the new seal. Position the seal on the rear of the engine in the proper direction.
  2.  
  3. Using a suitable seal driver, tap the seal into position in the seal retainer.

    Click image to see an enlarged view

    Fig. Be sure to install the seal in the correct orientation-1.6L and 2.0L engine



    Click image to see an enlarged view

    Fig. Carefully pry the rear main seal out of the retainer on the rear of the engine-1.6L and 2.0L engine

  4.  
  5. Install or connect the following:

    Flywheel/flexplate
     
    Transaxle assembly
     

  6.  

1.6L, 1.8L & 2.0L Engines


Click image to see an enlarged view

Fig. Carefully pry the rear main seal out of the retainer on the rear of the engine-1.6L, 1.8L and 2.0L engines



Click image to see an enlarged view

Fig. Carefully pry the rear main seal out of the retainer on the rear of the engine-1.8L engine-2002-2006

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

    Transaxle
     
    Driveplate/ flywheel
     
    Oil seal retainer
     

  4.  
  5. Carefully pry the seal from the retainer. Be sure not to scratch the sealing surface of the crankshaft or oil seal bore.
  6.  

To install:

  1. Apply clean engine oil to the new seal. Position the seal on the rear of the engine in the proper direction.
  2.  
  3. Using a suitable seal driver, tap the seal into position in the seal retainer.

    Click image to see an enlarged view

    Fig. Be sure to install the seal in the correct orientation-1.6L, 1.8L and 2.0L engines



    Click image to see an enlarged view

    Fig. Be sure to install the seal in the correct orientation-1.8L engine2002-2006



    Click image to see an enlarged view

    Fig. Install the rear main seal using a suitable driver-1.6L, 1.8L and 2.0L engines



    Click image to see an enlarged view

    Fig. Install the rear main seal using a suitable driver-1.8L engine2002-2006

  4.  
  5. Install or connect the following:

    Flywheel/flexplate
     
    Transaxle assembly
     

  6.  

1.8L & 2.0L Engines


Click image to see an enlarged view

Fig. Carefully pry the rear main seal out of the retainer on the rear of the engine-1.8L and 2.0L engines

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

    Transaxle
     
    Driveplate/ flywheel
     
    Oil seal retainer
     

  4.  
  5. Carefully pry the seal from the retainer. Be sure not to scratch the sealing surface of the crankshaft or oil seal bore.
  6.  

To install:

  1. Apply clean engine oil to the new seal. Position the seal on the rear of the engine in the proper direction.
  2.  
  3. Using a suitable seal driver, tap the seal into position in the seal retainer.
  4.  
  5. Install or connect the following:

    Flywheel/flexplate
     
    Transaxle assembly
     

  6.  


    Click image to see an enlarged view

    Fig. Be sure to install the seal in the correct orientation-1.8L and 2.0L engines



    Click image to see an enlarged view

    Fig. Install the rear main seal using a suitable driver-1.8L and 2.0L engines


2.4L Engine
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove or disconnect the following:

    Transaxle
     
    Driveplate/flywheel
     
    Rear oil seal retainer with the oil seal
     

  4.  
  5. Tap the oil seal out of the retainer with a hammer and drift.
  6.  

To install:

  1. Apply clean engine oil to the new seal.
  2.  
  3. Install the new seal in the retainer with a suitable seal driver.
  4.  
  5. Apply a continuous bead of RTV silicone sealant, 2-3mm wide, to the seal retainer. Be sure to apply around the inner side of the bolt holes.
  6.  
  7. Install or connect the following:

    Tap the seal into position in the seal retainer, using a suitable seal driver
     
    Oil seal retainer and torque the bolts to 56-66 inch lbs. (6.5-7.5 Nm)

    Click image to see an enlarged view

    Fig. Apply sealant to the seal retainer as shown-2.4L engine

     
    Driveplate/flywheel
     
    Transaxle
     

  8.  

2.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Remove or disconnect the following:

    Transaxle
     
    Driveplate/flywheel
     
    Rear oil seal retainer with the oil seal
     

  4.  
  5. Tap the oil seal out of the retainer with a hammer and drift.
  6.  

To install:

  1. Apply clean engine oil to the new seal.
  2.  
  3. Install the new seal in the retainer with a suitable seal driver.
  4.  
  5. Apply a continuous bead of RTV silicone sealant, 2-3mm wide, to the seal retainer. Be sure to apply around the inner side of the bolt holes.
  6.  
  7. Install or connect the following:

    Tap the seal into position in the seal retainer, using a suitable seal driver
     
    Oil seal retainer and torque the bolts to 56-66 inch lbs. (6.5-7.5 Nm)
     
    Driveplate/flywheel
     
    Transaxle
     

  8.  

3.0L & 3.5L Engines
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Transaxle
     
    Driveplate/flywheel
     
    Oil pan
     
    Oil seal retainer
     

  6.  
  7. Tap the oil seal out of the retainer with a hammer and drift.
  8.  
  9. Clean all mating surfaces of any residual liquid gasket.
  10.  

To install:

  1. Install or connect the following:

    New seal into the retainer
     
    Oil seal retainer
     
    Oil pan
     
    Driveplate/flywheel
     
    Transaxle
     

  2.  
  3. Fill the engine with clean oil.
  4.  
  5. Start the vehicle, check for leaks and repair if necessary.
  6.  

3.0L Engines
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Transaxle or transmission
     
    Driveplate/flywheel
     
    Oil pan
     
    Oil seal retainer
     

  6.  
  7. Tap the oil seal out of the retainer with a hammer and drift.
  8.  
  9. Clean all mating surfaces of any residual liquid gasket.
  10.  

To install:

  1. Install or connect the following:

    New seal into the retainer
     
    Oil seal retainer
     
    Oil pan
     
    Driveplate/flywheel
     
    Transaxle/transmission
     

  2.  
  3. Fill the engine with clean oil.
  4.  
  5. Start the vehicle, check for leaks and repair if necessary.
  6.  

3.5L Engine
  1. Before servicing the vehicle, refer to the Precautions Section.
  2.  
  3. Drain the engine oil.
  4.  
  5. Remove or disconnect the following:

    Transaxle
     
    Driveplate/flywheel
     
    Oil pan
     
    Oil seal retainer
     

  6.  
  7. Tap the oil seal out of the retainer with a hammer and drift.
  8.  
  9. Clean all mating surfaces of any residual liquid gasket.
  10.  

To install:

  1. Install or connect the following:

    New seal into the retainer
     
    Oil seal retainer
     
    Oil pan
     
    Driveplate/flywheel
     
    Transaxle
     

  2.  
  3. Fill the engine with clean oil.
  4.  
  5. Start the vehicle, check for leaks and repair if necessary.
  6.  

 
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