Diesel Data: Automotive Repair

Limited Slip Differential

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Assembly
Coat all components with suitable limited slip differential lubricant prior to assembly.
1. Install selected adjusting washer in differential case with oil groove facing clutch plate, then thrust washers 1 and 2 and side gear.
2. Install clutch member thrust washer with oil groove facing clutch member, then the left clutch member.
3. Position pinions and clutch member springs on left member, then install right clutch member and thrust washer, with oil grooves facing clutch member.
4. Install selected adjusting washer in case cover with oil groove facing clutch, then thrust washers 1 and 2 and the side gear.
5. Position case cover assembly on differential case with matching marks aligned.
6. Apply thread locking compound to case cover bolts following manufacturer's instructions, then install bolts.
7. Torque retaining bolts to 47 ft. lbs., then ensure side gears rotate smoothly. Tighten bolts evenly and gradually.

Inspection & Adjustment
1. Clean and inspect all components, and replace any that are damaged or excessively worn. If side gears and/or clutch members are replaced, contacting thrust washers must also be replaced.
2. Measure free length of clutch member springs, and spring pressure at 1.102 inch installed height.
3. Replace springs if free length is less than 1.366 inches or if pressure at installed height is less than 88.2 lbs.

Fig. 36 Differential Case & Clutch Member Measurement. Cressida w/Independent Rear Suspension:




Fig. 37 Differential Case & Clutch Member Specifications. Cressida w/Independent Rear Suspension:




Fig. 38 Limited Slip Differential Component Measurement. Cressida w/Independent Rear Suspension:






4. Measure left clutch member and differential case dimensions, Fig. 36, and replace components if dimensions or clearance is not as specified, Fig. 37.
5. Assemble thrust washers, side gears and clutch members on SST 09411-22011 in order shown in Fig. 38, then tighten nut on tool to seat components. Do not install adjusting washers or clutch member springs.
6. Loosen nut and allow spring tension to hold components, then measure and record dimension ``L'' with a suitable micrometer, Fig. 38. Ensure components are properly aligned, then measure dimension ``L'' at several points and record average reading.

Fig. 39 Limited Slip Adjusting Washer Selection Chart. Cressida w/Independent Rear Suspension:




Fig. 40 Limited Slip Differential Case Identification. Cressida w/Independent Rear Suspension:




Fig. 41 Adjusting Washer Identification Chart:






7. Match differential case dimension (MD code) recorded in step 1 with dimension ``L'' recorded in step 6, then select adjusting washers from charts, Fig. 39.
8. Select thrust washers that will provide 0.0012-0.0059 axial clearance in differential case, Figs. 40 and 41.
9. Remove differential components from gauge tool, keeping components in order for proper assembly.
10. Install selected adjusting washer, thrust washers 1 and 2, side gear, clutch member thrust washer and left clutch member in differential case.
11. Install selected adjusting washer, thrust washers 1 and 2, side gear and clutch member thrust washer in case cover.
12. Position right clutch member and pinions on left clutch member, assemble differential cover and case assemblies, and torque retaining bolts to 47 ft. lbs. Do not install clutch member springs.
13. Remove snap ring from side gear shaft, then rotate side gears. If gears bind or stick, repeat component inspection and adjusting washer selection.
14. When axial play has been properly adjusted, disassemble differential case.

Disassembly

Fig. 34 Limited Slip Differential Case Markings. Cressida w/Independent Rear Suspension:




Fig. 35 Exploded View Of Limited Slip Differential. Cressida w/Independent Rear Suspension:






1. Scribe alignment marks between differential case and cover, and record ``MD'' number and left and right clutch member markings, Fig. 34.
2. Remove case cover bolts, Fig. 35. Cover bolts are retained with thread locking compound. To aid disassembly, differential case may be heated to approximately 300°F. However, care must be taken not to overheat assembly and to ensure assembly is heated evenly, or components will be damaged.
3. Remove case cover along with side gear assembly. Keep all components in order, Fig. 35, for reassembly. Components that are to be reused must be installed in original position.
4. Remove clutch member thrust washer, side gear, thrust washers 1 and 2, and adjusting washer from case cover.
5. Remove right clutch member and pinion assembly from differential case, noting position for installation.
6. Remove clutch member springs (4) and left clutch member.
7. Remove side gear along with clutch member thrust washer, thrust washers 1 and 2, and adjusting washer from case.