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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1050 (Drive Axle - Locking/Limited Slip) >> Repair Instructions >> Limited Slip Differential Disassemble

Limited Slip Differential Disassemble

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Tools Required 

J 45709  Limited Slip Differential Overhaul Kit - Dana 248. See Special Tools and Equipment .

  1. Remove the ring gear, if necessary. Refer to Drive Pinion and Ring Gear Replacement (8.6 Inch, 9.5 Inch, 11.5 Inch Axles) or Drive Pinion and Ring Gear Replacement (9.75 Inch Axle) or Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) in Rear Drive Axle.
  2. Remove the differential side bearings, if necessary. Refer to Differential Side Bearings Replacement (All Except 9.75 Inch Axle) or Differential Side Bearings Replacement (9.75 Inch Axle) in Rear Drive Axle.
  3. Using a brass drift, remove the pinion shaft roll pin.
    4. Fig 1: Removing Pinion Shaft Roll Pin
    GM800593Courtesy of GENERAL MOTORS CORP.
  4. Remove the pinion shaft.
  5. Install the J 45709-4 into a vise.
    6. Fig 2: Installing J 45709-4 In Vise
    GM800592Courtesy of GENERAL MOTORS CORP.
  6. Install the differential assembly onto the J 45709-4.
  7. Install the J 45709-3 (2) onto the lower differential side gear and the J 45709-2 (1) through the differential case as shown.
    8. Fig 3: Installing J 45709-2 & J 45709-3
    GM800595Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  8. Compress the side gear clutch disc packs by tightening the J 45709-2 (1) against the J 45709-3 (2).

    Tighten:  Tighten the J 45709-2 to 40 N.m (30 lb ft).

    9. Fig 4: Compressing Side Gear Clutch Disc Packs By Tightening J 45709-2 & J 45709-3
    GM800596Courtesy of GENERAL MOTORS CORP.
  9. Remove the pinion gear thrust washers.

    If the pinion gear thrust washers cannot be removed, continue to tighten the J 45709-2 as necessary until the pinion gear thrust washers can be removed.

    10. Fig 5: Removing Pinion Gear Thrust Washers
    GM800599Courtesy of GENERAL MOTORS CORP.
  10. Install the J 45709-1 (1) into the differential case pinion gear shaft bore.
    11. IMPORTANT: Only loosen the J 45709-2 until the differential case can be rotated.
  11. While holding the J 45709-1 (1), turn the forcing screw of the J 45709-2 (3) counterclockwise to relieve the tension of the clutch disc packs against the differential case.
    12. Fig 6: Using J 45709-1, J 45709-3 & J 45709-2 To Relieve The Tension Of The Clutch Disc Packs Against The Differential Case
    GM800598Courtesy of GENERAL MOTORS CORP.
  12. Once the tension between the clutch disc packs and the differential case has been relieved, rotate the differential case using the J 45709-1.
  13. Remove the differential pinion gears.
  14. Remove the J 45709-2 (1).
  15. Remove the J 45709-3 (3).
    16. Fig 7: Removing Differential Pinion Gears
    GM800611Courtesy of GENERAL MOTORS CORP.
  16. Remove the differential side gears and clutch disc pack assemblies.
    17. IMPORTANT: Before removing the clutch disc packs, note their position and arrangement.
  17. Remove the upper differential side gear and clutch disc pack.
  18. Remove the lower differential side gear and clutch disc pack.
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