ES300 1992-1997

Accessory Drive Belts

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Adjustment



Alternator Belt

Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999

  1. Disconnect the negative battery cable.
  2.  
  3. Loosen the adjusting lock bolt and the pivot bolt.
  4.  
  5. Tighten the adjusting bolt until the belt meets one of the following tensions:
    1. 1990-96 models:

      New belt: 175 ft. lbs., plus or minus 5 ft. lbs.
       
      Used belt: 115 ft. lbs., plus or minus 20 ft. lbs.
       

    2.  
    3. 1997-99 models:

      New belt: 165 ft. lbs., plus or minus 26 ft. lbs.
       
      Used belt: 110 ft. lbs., plus or minus 11 ft. lbs.
       

    4.  

  6.  
  7. Tighten the adjusting and pivot bolts.
  8.  
  9. Connect the negative battery cable.
  10.  

Power Steering Pump

Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999

  1. Disconnect the negative battery cable.
  2.  
  3. Loosen the power steering pump adjusting bolt and the through bolt.
  4.  
  5. Using the proper tool, move the pump assembly to attain the proper belt tension.
  6.  
  7. Tighten the pump mounting bolts.
  8.  
  9. Connect the negative battery cable.
  10.  

Belt Routings



Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999



Click image to see an enlarged view

Fig. Drive belt routing

Inspection



Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999

  1. Visually check the belt for excessive wear, frayed cords, etc. If necessary, replace the drive belt. Cracks on the rib side of a belt are considered acceptable. If the belt has chunks missing from the ribs, it should be replaced.
  2.  
  3. Check that the drive belt fits properly in the ribbed grooves.
  4.  
  5. Check the drive belt tension.

    Click image to see an enlarged view

    Fig. Correct drive belt installation

  6.  

Removal & Installation



Alternator & A/C Belt

Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999

  1. Disconnect the negative battery cable from the battery.
  2.  
  3. Loosen the alternator pivot bolt, adjusting lock bolt and the adjusting bolt.
  4.  
  5. Remove the alternator drive belt from the engine.

    Click image to see an enlarged view

    Fig. Alternator mounting bolts

  6.  

To install:

  1. Route the belt on the pulleys.
  2.  
  3. Tighten the adjusting bolt until the belt meets one of the following tensions:
    1. 1990-96 models:

      New belt: 175 ft. lbs., plus or minus 5 ft. lbs.
       
      Used belt: 115 ft. lbs., plus or minus 20 ft. lbs.
       

    2.  
    3. 1997-99 models:

      New belt: 165 ft. lbs., plus or minus 26 ft. lbs.
       
      Used belt: 110 ft. lbs., plus or minus 11 ft. lbs.
       

    4.  

  4.  
  5. Tighten the pivot bolt to 41 ft. lbs. (56 Nm).
  6.  
  7. Tighten the adjusting lock bolt to 13 ft. lbs. (18 Nm).
  8.  

Power Steering Belt

Specific to:

Lexus ES250 1990-1991

Lexus ES300 1992-1999

  1. Remove the alternator belt.
  2.  
  3. Raise and support the vehicle safely.
  4.  
  5. Remove the right front wheel.
  6.  
  7. Remove the fender apron seal.
  8.  
  9. Loosen the power steering pump mounting bolts and remove the belt.

    Click image to see an enlarged view

    Fig. Power steering belt and bolts (A, B)

  10.  

To install:

  1. Route the belt on the pulleys.
  2.  
  3. Adjust the belt tension to the following tensions:

    New belt: 150-185 ft. lbs. (203-251 Nm)
     
    Used belt: 95-135 ft. lbs. (122-183 Nm)
     

  4.  
  5. Torque the power steering mounting bolts to 32 ft. lbs. (43 Nm).
  6.  
  7. Install the fender apron seal.
  8.  
  9. Install the wheel.
  10.  
  11. Lower the vehicle.
  12.  
  13. Install the alternator belt.
  14.  

 
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