Calculating shim and inserting into rear axle housing

124 589 14 21 00

126 589 00 21 00

363 589 02 21 00

601 589 00 23 00

Measuring device

Measuring plate

Dial indicator holder

Measuring device

000 589 38 19 00

Dial indicator

P35.31-0262-01

1 Clamp commercially available dia. gauge  in gauge stand and mount on  measuring plate.

2 Adjust dial gage to "0" on measuring body (051b) 124 589 14 21 00 part 01 under approx. 3 mm preload, consequently the measuring body height "B1" is adjusted.

P35.31-0263-01

3 Mount tapered roller bearing outer race (46b) on the tapered roller bearing-inner race of the drive pinion (47) and attach magnetic plate (052c) 126 589 00 21 00 part 16.

4 Insert drive pinion (47) into  measuring plate and enter drive pinion height with tapered roller bearing and magnetic disk (052c).

Enter number 1 in the data sheet

5 Read off the difference "B" between the measuring body height "B1" and drive pinion height with magnetic disk (052c) and enter in the data sheet under number 1
(e.g. 1.30 mm).

P35.31-0364-01

Enter number 2 in the data sheet

6 Read off basic deviation "a" of drive pinion end face (+ or -) and enter under number 2 (e.g. +0.27) in the data sheet.

Calculate interim sum in the data sheet

7 Add (+) or subtract (-) numbers 1 and 2, depending on the prefix (+) or (-) of the value on the drive pinion

P35.31-0411-01

8 Insert the measuring body (051b) part 01 of  measuring device124 589 14 21 00 into rear axle.

9 Screw on measuring body (051b) with fastening piece 124 589 14 21 00 part 02 and hexagon bolt.

P35.31-0267-01

10  Insert dial gauge (052a) with measuring pin in the  measuring device (052)

126 589 00 21 00.

 The measuring pin for the  dial gauge (052a) is screwed into the adjusting piece (052b) 126 589 00 21 00 part 10.

11 Press the adjusting piece (052b) 126 589 00 21 00 part 10 against the  measuring device (052) and adjust the  dial gauge (052a) to "0" under 2 mm preload. Tighten the clamp screw and when doing so check the "0" position of the  dial gauge (052a), adjust if necessary.

P35.31-0412-01

12  Insert the measuring device (052) through the left bore in the rear axle housing.

 When inserting  measuring device (052) into rear axle housing, ensure that measuring pin of  dial indicator is not damaged in bore.

P35.31-0270-02

Enter number 3 in the data sheet

13 Measure difference "A1" between the adjusted gauge dimension and end face of measuring body and enter in the data sheet under number 3 in the positive (+) or negative (-) direction
(e.g. - 0.15 mm measured and therefore negative direction).

The specification of positive (+) or negative (-) direction is related to the direction of rotation of the dial gage pointer . The counterclockwise direction of rotation means negative direction and clockwise means positive direction.

Calculate the thickness of the shim "S" in the data sheet

14 Add (+) or subtract (-) interim sum of the values from number 1 and number 2 as well as the value from number 3. The calculated value reveals the thickness of the shim.

051 B Measuring body

A1 Difference in gage dimension and end face of measuring body

B1 Measuring body height

M Center of ring gear

Example:

P35.31-0413-01

15  Remove measuring device (052) from rear axle housing. Detach gauging member (051b).

16 Insert the shim with the calculated shim thickness "S" into the rear axle housing.

 Only hardened shims may be used. These shims are available in various thicknesses (see parts list). If necessary, grind down the shim accordingly.