Mitsubishi Car 1999-05

Front Crankshaft Seal

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Removal & Installation





Click image to see an enlarged view

Fig. Crankshaft seal installation-Diamante shown, others similar

On all engines, the camshaft oil seal requires the removal of the timing belt(s). It is advised to replace the seal while replacing the timing belts.


NOTE
The seal is located behind the crankshaft timing sprocket.

  1. To remove the seal use a suitable seal removal tool and pry it out of the cover.
  2.  
  3. Thoroughly clean the sealing area of the front cover.
  4.  
  5. Using a suitable installation tool (a large socket works well if none is available), install the seal into the front cover.
  6.  


WARNING
Make sure to install the seal to the correct depth, if the seal is installed too far, an oil leak will occur.

  1. Remove or disconnect the following:

    Negative battery cable
     
    Undercover
     
    Cruise control pump and link assembly
     
    Alternator assembly
     

  2.  
  3. Raise and support the engine to take the weight off of the engine mount.

    Air hose and the air pipe
     
    Power steering tensioner and drive belt
     
    Timing belt covers and the timing belt
     
    Crankshaft sprocket
     

  4.  
  5. Pry out the crankshaft seal using a suitable tool.
  6.  

To install:

  1. Using a driver tool, install the new crankshaft seal.
  2.  
  3. Install or connect the following:

    Timing belt and the timing belt covers
     
    Crankshaft sprocket
     
    Air hose and the air pipe
     
    Alternator and the cruise control link and pump assembly
     
    Undercover
     
    Negative battery cable
     

  4.  

  1. Remove or disconnect the following:

    Negative battery cable
     
    Drive belts
     
    Crankshaft pulley
     
    Timing belt covers and the timing belt
     
    Crankshaft Position (CKP) sensor
     
    Crankshaft sprocket, the sensing blade, spacer and Woodruff® key
     

  2.  
  3. Pry the seal from the bore, using a suitable tool.
  4.  

To install:

  1. Using a seal driver, install the new crankshaft seal. Lubricate the lips of the seal with clean engine oil.

    Click image to see an enlarged view

    Fig. Crankshaft seal installation-Diamante and 3000GT

  2.  
  3. Install or connect the following:

    Woodruff® key, spacer, sensing blade and the crankshaft sprocket
     
    CKP sensor and tighten the retaining bolts to 84 inch lbs. (9 Nm)
     
    Timing belt and the timing belt covers
     
    Crankshaft pulley and retaining bolt. Torque the retaining bolt to 130-137 ft. lbs. (180-190 Nm) for the DOHC engine or to 108-116 ft. lbs. (150-160 Nm) for the SOHC engine.
     
    Drive belts, adjust
     
    Negative battery cable

    Click image to see an enlarged view

    Fig. The crankshaft pulley pin spanner tool should be used to hold pulley while bolt is removed-Diamante and 3000GT

     

  4.  

  1. Remove or disconnect the following:

    Negative battery cable.
     
    Timing belt
     
    Crank angle sensor
     
    Crankshaft sprocket.
     
    Spring pin
     
    Crankshaft sending blade
     
    Crankshaft spacer
     
    Crankshaft front oil seal

    Click image to see an enlarged view

    Fig. View of the front crankshaft seal-Lancer 2.0L engine

     

  2.  

To install:

  1. Install or connect the following:

    Engine oil to the oil seal lip
     
    Crankshaft front using seal into the front case, using special driver tool MD998717
     

  2.  
  3. Remove all oil or other lubricants from the mounting surfaces on the crankshaft, spacer, sensing blade and crankshaft sprocket.
  4.  
  5. Assemble the spring pin, sensing blade, and crankshaft spacer together.
  6.  
  7. Install or connect the following:

    Crankshaft sprocket assembly onto the crankshaft
     
    Crank angle sensor
     
    Timing belt
     
    Negative battery cable
     

  8.  

  1. Remove or disconnect the following:

    Negative battery cable.
     
    Crankshaft pulley retainer bolts and remove the pulley
     
    Vibration damper retainer bolt and washer and remove damper
     
    Timing belt
     
    Crankshaft sprocket
     

  2.  
  3. Pry out the oil seal from front of engine.
  4.  

To install:

  1. Using proper size driver, install a new front seal.
  2.  
  3. Lubricate the lips of the new seal with clean engine oil.
  4.  
  5. Install or connect the following:

    Timing belt, timing covers, valve cover and remaining components
     
    Crankshaft sprocket and vibration damper
     
    Engine undercover and connect the negative battery cable
     

  6.  

2.4L Engine
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2.  
  3. Remove or disconnect the following:

    Negative battery cable
     
    Timing belt
     
    Crankshaft sprocket
     

  4.  
  5. Carefully pry the oil seal out of the front case. Be careful not to damage the oil seal bore or the crankshaft sealing surface.
  6.  

To install:

  1. Apply clean engine oil to the oil seal lip. Using a seal driver, install the oil seal.
  2.  
  3. Install or connect the following:

    Crankshaft sprocket. If equipped, tighten the crankshaft bolt to 87 ft. lbs. (118 Nm).
     
    Timing belt
     
    Negative battery cable
     

  4.  

  1. Remove or disconnect the following:

    Negative battery cable
     
    Timing belt
     
    Crankshaft sprocket
     

  2.  
  3. Carefully pry the oil seal out of the front case. Be careful not to damage the oil seal bore or the crankshaft sealing surface.
  4.  

To install:

  1. Apply clean engine oil to the oil seal lip. Using a seal driver, install the oil seal.
  2.  
  3. Install or connect the following:

    Crankshaft sprocket. If equipped, tighten the crankshaft bolt to 87 ft. lbs. (118 Nm).
     
    Timing belt
     
    Negative battery cable
     

  4.  

3.0L And 3.8L Engines
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the timing belt.
  6.  
  7. Remove the crankshaft sprocket.
  8.  
  9. Remove the Crankshaft Position (CKP) sensor.
  10.  
  11. Remove the crankshaft sensing blade.
  12.  
  13. Remove the crankshaft spacer and woodruff key.
  14.  
  15. Carefully pry the oil seal out of the front case. Be careful not to damage the oil seal bore or the crankshaft sealing surface.
  16.  

To install:

  1. Apply clean engine oil to the oil seal lip. Using a seal driver, install the oil seal.
  2.  
  3. Install the woodruff key and crankshaft spacer.
  4.  
  5. Install the crankshaft sensing blade.
  6.  
  7. Install the CKP sensor.
  8.  
  9. Install the crankshaft sprocket.
  10.  
  11. Install the timing belt.
  12.  
  13. Connect the negative battery cable.
  14.  

3.0L Engine
  1. Before servicing the vehicle, refer to the precautions at the beginning of this section.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove the timing belt.
  6.  
  7. Remove the crankshaft sprocket.
  8.  
  9. Remove the Crankshaft Position (CKP) sensor.
  10.  
  11. Remove the crankshaft sensing blade.
  12.  
  13. Remove the crankshaft spacer and woodruff key.
  14.  
  15. Carefully pry the oil seal out of the front case. Be careful not to damage the oil seal bore or the crankshaft sealing surface.
  16.  

To install:

  1. Apply clean engine oil to the oil seal lip. Using a seal driver, install the oil seal.
  2.  
  3. Install the woodruff key and crankshaft spacer.
  4.  
  5. Install the crankshaft sensing blade.
  6.  
  7. Install the CKP sensor.
  8.  
  9. Install the crankshaft sprocket.
  10.  
  11. Install the timing belt.
  12.  
  13. Connect the negative battery cable.
  14.  

 
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