General

General
The rear axle is attached to the body by support arms (1), a torque arm (2) and a torque arm frame (3).

A panhard rod (4) is also installed between the rear axle and the crossmember, while an anti-roll bar (5) is mounted between the support arms.





Final Drive
The following final drive ratios are available: 3.31:1, 3.54:1, 3.73:1, 3.91:1, and 4.10:1.

The unit is of the hypoid bevel type, in which the shape of the spiral gear teeth permits the pinion to be located below the centre of the crown wheel (ring gear) affording quieter operation and stronger teeth. Power is transmitted by rolling and sliding action between the teeth under high pressure.

The design imposes high demands on the lubricating oil, a special grade of which must be used.

The final drive consists of the pinion, crown wheel and [1][2]differential. The differential consists of two differential pinions (or side pinions) in constant engagement with two differential gears (side gears), all of the bevel type with straight teeth. The gear set is contained in a differential housing (cage), which is supported in the rear axle casing in tapered roller bearings.

The [1][2]differential housing is driven by the crown wheel and pinion.

The backlash of the gears and take-up of the [1][2]differential housing bearings are adjusted by means of shims located on the inner side of the bearings.

The crown wheel bolts are locked by a plate installed on the inner side of the [1][2]differential housing bearing inner race (at the crown wheel side of the assembly). The plate is installed when the bearing is pressed into position, exerting a pressure on the heads of the bolts.





Pinion
The pinion is supported in tapered roller bearings, its axial position in relation to the crown wheel being adjusted by means of shims (B).

In the earlier drives, bearing preload was adjusted by means of shims under the inner race of the front pinion bearing. In later types, a compression sleeve is used for this purpose.

In production, spacers are used instead of shims. The spacer used to determine the pinion location is installed behind the inner race of the rear bearing. When carrying out adjustments, the spacers must be replaced by shims.

Drive (axle) Shafts





Legend
1 Drive (axle) Shaft
2 Locking Plate (outer)
3 Sealing Rings
4 Locking Ring (inner)
5 Grease

The shafts are supported in non-adjustable tapered roller bearings.

The bearings are locked in position by means of an inner locking ring and an outer locking plate, and are sealed by means of two sealing rings (inner and outer).

The space between the outer sealing ring and bearing inner race and cage is packed with grease.