Determine shim thickness on drive pinion

AR35.30-B-0470-03D

Determine shim thickness on drive pinion

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-1003-01A

Friction moment of pinion bearings

Nm

8...15

Rear axle actuation

Number

Designation

Rear axle 746.231/305

BE35.30-B-1005-01A

Tapered roller bearings pre-load of the strike pinion

mm

0,01...0,05

1

Install the pinion (2) together with the tapered roller bearing on differential set housing (3).

2

Adapt the tool by replacing the  adapter.

 It is necessary to exchange the  adapter just to work on axes HD6.

3

Install the  retaining device with the respective bearing ring in the differential set housing (3) and tighten the spindle (arrow) against the pinion (2).

4

Turn the differential set housing (3) by 180°.

5

Measure and write down the depth (A) between the differential set housing face (3) and the spacer ring (5).

 Use the  parallel support to help in measurement.

6

Remove the pinion (2) together with the lower tapered roller bearing (1).

7

Place the tapered roller bearing (4) on the differential set housing (3).

8

Measure and write down the depth (B) between the differential set housing face (3) and the inner race (4) of the upper tapered roller bearing.

9

To determine the measure (C), write down the height of the inner race of the tapered roller bearing (4).

10

The measure "D", referring to the thickness of the adjusting washer (6), will be determined as follows:
Measure "D" Measure "D"= Measure "A" - (Measure "B" + Measure "C")

11

To obtain the   prescribed friction moment to the pinion tapered roller bearings, the   thickness of the adjusting washer (6) will be the measure value "D" minus the indicated value for the preload of the tapered roller bearings.