Adjust gear backlash at ring gear

AR35.30-B-0464-02A

Adjust gear backlash at ring gear

 Caution

Risk of injury caused by scraping or cutting body parts on sharp vehicle parts

Always wear protective gloves when working on or near sharp and non-deburred vehicle parts.
Deburr repair panels.

AS00.00-Z-0017-01A

Rear axle

746.231/305 in model 934.24, 938.14, 958.4

Rear axle actuation

Number

Designation

Rear axle 746.231/305

BE35.30-B-1001-01A

Ring gear teeth clearance

mm

0,15...0,35

1

Turn the differential assembly a few times and measure the gap between the teeth of the toothed crown and the pinion in at least three different points displaced by 120 °. 

2

Support the base of the  dial indicator bracket (11) with the  dial indicator (10) on the flat surface of the differential assembly (1) housing.

 The  dial indicator (10) must be in a vertical position with its probe resting on the flank of one of the toothed crown teeth, with a preload of approximately 2 mm.

3

Lock the pinion at the point of least play and move the differential assembly in the axial direction acting on the threaded rings  with rectangular mandrel until greatest clearance prescribed.

4

Loosen the threaded rings slightly with the quadrangular mandrel  for relieving the load on the tapered roller bearings (4) by turning the toothed crown, then press them again.

 Press the threaded rings lightly to avoid load on the bearings.