Locking Differential Assemble (8.6 Inch Axle)

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IMPORTANT: The left and right side gear backlash and thrust block thickness measurement must be completed before the components of the locking differential can be assembled.

Fig 1: View Of Left Side Gear Thrust Washer

Courtesy of GENERAL MOTORS CORP.

Install the left side gear thrust washer.

Fig 2: View Of Left Side Gear Cam Unit & Clutch Disc Assembly

Courtesy of GENERAL MOTORS CORP.

Install the left side gear cam unit and clutch disc assembly.
Install the right side gear thrust washer.
Install the right side clutch disc assembly.
Install the right side gear.

IMPORTANT: If the original pinion gears and thrust washers are being re-used, install the pinion gears and thrust washers on the same side as when removed.

Install the pinion gear and the pinion thrust washers.
Place the pinion gears and the pinion thrust washers 180 degrees apart.
Rotate the pinion gears and the pinion thrust washers 90 degrees and align the pinion gears with the pinion shaft opening in the differential case.
Install the thrust block.
The open side of the thrust block must face the window opening.
Install the pinion shaft.
Install the new pinion shaft lock bolt.
Tighten the pinion shaft lock bolt finger tight.

Fig 3: Identifying Governor Bushing

Courtesy of GENERAL MOTORS CORP.

Install the governor assembly.

NOTE: Refer to Fastener Notice .

Using a hammer and a brass drift, install the governor bushing.
Specification: Press the bushing into place until there is 0.25-1.27 mm (0.010-0.050 in) of shaft end play.

Fig 4: Identifying Latching Bracket Bushing

Courtesy of GENERAL MOTORS CORP.

Install the latching bracket assembly.
The straight end of the latching bracket spring must be over and outside the governor assembly shaft.
Using a hammer and a brass drift, install the latching bracket bushing.
Specification: Press the bushing into place until there is 0.000-0.051 mm (0.000-0.002 in) of shaft end play.
Tighten the pinion shaft lock bolt.
Tighten: Tighten the pinion shaft lock bolt to 36 N.m (27 lb ft).
Install the ring gear, if necessary. Refer to Drive Pinion and Ring Gear Replacement (10.5 Inch Axle) or Drive Pinion and Ring Gear Replacement (8.6 Inch Axle) .