Limited Slip Differential

Disassembly

Fig. 42 Exploded View Of Limited Slip Differential.:

1. Make reference marks on left and right side differential case halves, then place righthand case in suitable vise.
2. Loosen case halves attaching bolts a little at a time, then remove attaching bolts and separate lefthand case from righthand case, Fig. 42.
3. From lefthand side case, remove side gear, 5 side gear thrust washers and 4 clutch plates. Keep disassembled parts in order.
4. From righthand case, remove lefthand retainer, spring, spider with pinion gear, righthand retainer, side gear, 5 side gear thrust washers and 4 clutch plates. Keep disassembled parts in order they were removed.

Inspection & Adjustment
1. Inspect parts for signs of damage or wear. Replace as necessary. If side gear requires replacement, replace the thrust washer that contacts it also.
2. Inspect thrust washers for damage or wear. Ensure contact surface is even with no bare metal showing.
3. Using a suitable micrometer, measure thrust washer thickness. If less than .0685 (1.74mm), replace thrust washers. If thrust washers require replacement, replace clutch plate that contacts thrust washer.

Fig. 43 Clutch Plate Identification. Supra w/limited Slip Differential:

4. Check clutch plates for wear or damage and replace as necessary. These differentials may be assembled with either of two type clutch plates, Fig. 43. If clutch plates require replacement, they must be replaced with the same type that was removed.
5. Measure spring free length. Spring should be 1.232 inch (31.3mm).

Fig. 44 Measuring Dimension ``A''in Righthand Case. Supra w/limited Slip Differential:

6. Measure and record right side case dimension ``A,'' Fig. 44, then determine required side bearing shim thickness as follows:
a. Assemble thrust washers and clutch plates on side gear. Do not assemble side gear shims at this time.

Fig. 45 Measuring Dimension (B) To Determine Side Gear Bearing Shim Pack. Supra w/limited Slip Differential:

b. Using tool No. 09726-35010, apply approximately 22 lbs. of pressure to thrust washer and clutch pack while measuring dimension ``B,'' Fig. 45.
c. To determine side bearing shim thickness ``C,'' use the following formula: ``C''=``A'' - ``B'' - .6358 inch (16.15mm).

Fig. 46 Adjusting Shim Selection Chart. Supra w/limited Slip Differential:

Fig. 47 Adjusting Shim Sizes. Supra w/limited Slip Differential:

d. Refer to Figs. 46 and 47, to select proper shims.
e. Install selected shim(s) between outer thrust washer and case.
7. Determine side bearing shim thickness for left side case by following procedures in step 6, above.

Assembly
1. Lubricate all components with limited slip differential lubricant.
2. Into righthand case, install adjusting shim, thrust washers and clutch plates. Install thrust washer without oil groove on outer side so it makes contact with the side of the case with no oil groove.
3. Into lefthand case, install adjusting shim, thrust washers and clutch plates. Install thrust washer without oil groove on outer side so it makes contact with the side of the case with no oil groove.
4. Install pinion gears and washers to spider, then align righthand retainer holes with spider lockpins and install retainer.
5. Install spider, pinion, washers and righthand retainer assembly to righthand case.
6. Secure side gear, then measure backlash while pushing on spider retainer. Backlash should be .002-.0079 inch (.05-.20mm). If not within specifications, select suitable adjusting shim.
7. Measure backlash in left side case as outlined in step 6.
8. Install spring and lefthand retainer in spider.
9. Align reference marks, then install lefthand case on righthand case.
10. Lightly oil attaching bolts, then install bolts and tighten evenly and gradually. When snug, torque to 35 ft. lbs.