Measure difference dimension of drive pinion

AR35.30-D-4815-06S

Measure difference dimension of drive pinion

Rear axle

741.421/422/423/453/454/455 in model 906

Rear axle

741.421/455 in model 900

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 special tool  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  dial indicator (03) displays a pretension 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 mount 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).

9

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

 The preliminary difference dimension is arrived through 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 through subtraction of the correction value 14.97 mm from the reading value.