Axle, Integral Carrier — 8.8 Inch Ring Gear

The rear axle assembly is an integral-type housing hypoid gear design (centerline of the pinion set below the centerline of the ring gear).

The hypoid gearset consists of a 224mm (8.8 inch) diameter ring gear and an overhung drive pinion which is supported by two opposed tapered roller bearings. Pinion bearing preload is maintained by a collapsible spacer on the pinion shaft and adjusted by the pinion nut.

The housing assembly consists of a cast center section with integral cast suspension attaching ears, two steel tube assemblies and a stamped steel rear cover. The cover uses a silicone sealant rather than a gasket.

The differential case is a one-piece design with two openings to allow for assembly of internal components and lubricant flow. The differential pinion shaft is retained by a threaded bolt assembled to the case. The differential case assembly is mounted in the carrier between two opposed tapered roller bearings. The bearings are retained in the carrier by removable bearing caps.

Differential bearing preload and ring gear backlash are adjusted by shims located between the differential bearing cup/races and the carrier housing.

The use of a hypoid shim gauge in conjunction with a differential shim gauge is required for proper gearset adjustment.

The semi-floating axle shafts are held in the housing by C-washer locks positioned in a slot on the axle shaft splined end. These C-washers also fit into a machined recess in the differential side gears within the differential case.

Axle Assembly, Rear—Sectional View






Axle, Rear—Exploded View

Item	Part Number	Description
1A	383548	Bolt
2	4033	Cover
3	4230	Thrust Washer
4	4215	Pinion Gear
5	4211	Diffrential Pinion Shaft
6	4236	Side Gear
7	4228	Thrust Washer
8	4221	Bearing
9	4222	Cup
10	4067	Shim
11	4N237	C-Locks
12B	3B7426	Pinion Shaft Lock Pin
13C	388056-S100	Bolt
14	4204	Differential Case
15	4141	Differential Cap
16	4010	Housing Assy
17A	373098-S	Filler Plug
18D	389546-S100	Pinion Nut
19	4676	Pinion Seal
20	4621	Bearing Assy
21	4662	Collapsible Spacer
22	4851	Flange
23	4670	Slinger
24	—	Bolt
25	1225	Bearing
26	1177	Wheel Seal
27E	—	Nut
28	—	Bolt
29	4022	Vent
30	4628	Bearing Cup
31	4630	Bearing Assy
32	4209	Ring and Pinion
33	—	Pinion Shim
34C	56187-S	Bolt
35	4616	Cup
36	2C101 (LH) 2C100 (RH)	Caliper Mounting Bracket
37	4234	Axle Shaft Assy
38	2251	Clip
A		Tighten to 38-52 Nm (28-38 Lb-Ft)
B		Tighten to 20-41Nm (15-30 Lb-Ft)
C		Tighten to 95-115 Nm (71-85 Lb-Ft)
D		Tighten to 190 Nm (140 Lb-Ft)
E		Tighten to 28-54 Nm (20-39 Lb-Ft)