AR35.30-D-4815-07C | Measuring basic dimension at rear axle housing and determining thickness of shim for correcting basic dimension | ||
Measure difference dimension of drive pinion |
Test and adjustment values for rear axle drive
Number | Designation | Rear axle 741.40/43 | Rear axle 741.130/131 | ||
BE35.30-N-1004-01B | Specified basic dimension for rear axle housing | mm | 66 | 66 | |
See picture | |||||
601 589 00 21 00
001 589 53 21 00
Dial indicator
Adjustment device
601 589 01 23 00
Measuring piece
D35.30-0006-01
A Measure production tolerance of axle housing
1 Screw measuring pin (tool circumference adjustment device) into dial indicator (3).
2 Press spacer (4) onto adjustment device and set dial indicator with
2 mm pre-tension.
3 Set dial indicator to zero.
This also sets the adjustment device (1) to the specified basic dimension.
D35.30-0007-01
4 Insert measuring piece (2) into rear axle housing.
5 Guide adjustment device (1) into rear axle housing and determine highest position (vertical position) of measuring pin by turning back and forth.
6 Measure production difference in relation to specified basic dimension.
If the dimension deviates towards the center of the ring gear (dial gauge indicates more than 2 mm), subtract this difference from the difference dimension of the drive pinion.
If the dimension deviates towards the drive pinion (dial gauge indicates less than 2 mm), add this difference to the difference dimension of the drive pinion.
The difference dimension determined in this way corresponds to the thickness of the shim.
D35.30-0008-01
B Deviation from specified basic dimension (lapped gear sets only)
The difference between the specified basic dimension and the basic dimension engraved on the ring gear must be added to or deducted from the dimension difference of the drive pinion.
Example:
Specified basic dimension 66,00 mm
Dimension engraved onto ring gear -66,02 mm
Difference dimension
(to be deducted from difference dimension of drive pinion) -0.02 mm
If the dimension engraved on the ring gear is e.g. 65.96 mm, 0.04 mm must be added to the dimension.
Examples for calculating the thickness of the shim with
lapped gear sets
Example 1:
Basic dimension 66,00 mm
Dimension engraved onto ring gear - 66.02 mm
Deviation from basic dimension - 0.02 mm
Difference dimension of drive pinion 5,18 mm
Deviation from basic dimension -0.02 mm
Production deviation of rear axle housing
(towards ring gear) - 0.06 mm
Shim to be installed 5,10 mm
Example 2:
Basic dimension 66,00 mm
Dimension engraved onto ring gear - 65,96 mm
Deviation from basic dimension + 0.04 mm
Difference dimension of drive pinion 5,36 mm
Deviation from basic dimension + 0.04 mm
Production deviation of rear axle housing
(towards drive pinion) + 0.02 mm
Shim to be installed 5,42 mm
Examples for calculating the thickness of the shim with
ground gear sets
Example 1:
Difference dimension of drive pinion 5,18 mm
Production deviation of rear axle housing
(towards ring gear) - 0.06 mm
Shim to be installed 5,12 mm
Example 2:
Difference dimension of drive pinion 5,36 mm
Production deviation of rear axle housing
(towards drive pinion) + 0.02 mm
Shim to be installed 5,38 mm
The shims are available in thicknesses from 5.00 mm to
5.68 mm in graduations of 0.002 mm.