Measure difference dimension of drive pinion

AR35.30-D-4815-06TSR

Measure difference dimension of drive pinion

Rear axle

741.421/422/423/453/454/455/456 in model 907

1

 Clamp measuring plate (01) in vise.

  Clamp measuring plate (01) in exact horizontal position.

2

 Fasten dial indicator (03) to  dial indicator holder (02).

3

Position  dial indicator holder (02) on  measuring plate (01).

 Make sure that the  dial indicator holder (02) does not make contact with the vise.
Otherwise incorrect measurements will occur.

4

Position gauge block (04) with corresponding measuring surface below the  dial indicator (03) on the  measuring plate (01).

 The  adjustment device contains a gauge block (04) with 2 different measuring surfaces. Depending on the ring gear diameter (Ø 215 mm or Ø 245 mm), use accordingly marked measuring surface for the measuring procedure.

5

 Set up dial indicator (03) and  dial indicator holder (02) so that the  dial indicator (03) displays a preload of 30 mm.

6

Set dial indicator scale to 0.

7

Remove gauge block (04) from  measuring plate (01).

X

Indentations and material elevations

8

Insert drive pinion (1) into  measuring plate (01).

 The drive pinion (1) must be measured with installed tapered roller bearing and its bearing shell. Check that the tapered roller bearing is correctly seated in the bearing shell for the measurement.

 There may be production-related indentations and material elevations (X) at the front of the drive pinion (1). Care must be taken during the measurement to ensure that the  dial indicator (03) is positioned at a location that is absolutely flat and free of indentations and material elevations (X).

 To do so, lift measuring tip of  dial indicator (03).

9

Read off and note preliminary difference dimension on  dial indicator (03).

 The preliminary difference dimension is achieved from the difference between the height of the gauge block (04) and the height of the drive pinion (1).

10

Calculate actual difference dimension of drive pinion (1) and note down.

 The actual difference dimension of the drive pinion (1) is calculated by subtracting the correction value 14.97 mm from the preliminary difference dimension.