Lexus Car ES, IS, LS 1998-06

Pinion Seal

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Removal & Installation



AWD
  1. Before servicing the vehicle, refer to the Precautions section.
  2.  
  3. Remove the differential and place the differential carrier in an overhaul stand.
  4.  
  5. Using SST 09930-00010 and a hammer, unstake the staked part of the drive pinion nut. Be sure to use the SST with the tapered surface facing the shaft. Completely loosen the staked part of the nut when removing it.
  6.  
  7. Using SST 09330-00021, 09950-30012 (09955-03030) to hold the flange, remove the drive pinion nut.
  8.  
  9. Using SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03030, 09956-03020), remove the companion flange. Apply grease to the threads and the tip of the SST center bolt before use.
  10.  
  11. Using SST 09950-00020, 09950-60010 (09951-00430), 09950-70010 (09951-07100) and a press, remove the dust deflector. Perform this procedure only when the dust deflector is damaged.
  12.  
  13. Using SST 09308-00010, remove the oil seal from the differential carrier.
  14.  

To install:

  1. Install the new pinion seal as follows:


    1. Join the 2 SST 09309-36010, 09502-12010 and secure them with vinyl tape.
    2.  
    3. Using SST 09309-36010, 09502-12010 and a hammer, install a new oil seal. Oil seal installation depth: 0.028-0.051 inch (0.7-1.3mm)
    4.  
    5. Apply MP grease to the oil seal lip.
    6.  

  2.  
  3. Install the differential side bearing retainer dust deflector with the bolt and tighten to 62 inch lbs. (7 Nm).
  4.  
  5. Install the front drive pinion companion flange as follows:


    1. Using SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03030, 09956-03020), install the companion flange to the drive pinion.
      NOTE
      Apply grease to the threads and tip of the SST center bolt before use.

    2.  
    3. Coat the threads of a new drive pinion nut with hypoid gear oil LSD.
    4.  
    5. Using SST 09330-00021, 09950-30012 (09955-03030), to hold the flange, tighten the drive pinion nut to 80-173 ft. lbs. (108-235 Nm).
    6.  

  6.  
  7. Adjust the differential drive pinion preload as follows:


    1. Using a torque wrench, measure the preload of the drive pinion. Preload (at starting):

      New bearing: 8.7-13.9 inch lbs. (0.98-1.57 Nm)
       
      Reused bearing: 4.3-6.9 inch lbs. (0.49-0.78 Nm)
       

    2.  
    3. If the preload is less than the specified minimum value, check the preload while retightening the drive pinion nut by 5-10° to adjust it into the specified range.
    4.  
    5. If the preload is less than the specified minimum value even when the tightening torque of the drive pinion nut is greater than the specified maximum value, loosen the nut and check that the threads of the drive pinion nut and drive pinion are not stripped.
    6.  
    7. If the threads are not stripped, replace the bearing spacer. Apply hypoid gear oil LSD to the threads of the drive pinion and repeat the procedure.
    8.  

  8.  
  9. Install the differential case to the differential carrier. Do not damage the case bearing and ring gear.
  10.  
  11. Install the front drive pinion companion flange front nut. Using a chisel and hammer, stake the drive pinion nut.
  12.  

 
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