Measure lateral misalignment of axle · ar4020b037001a · Mercedes-Benz WIS

AR40.20-B-0370-01A

Measure lateral misalignment of axle

Model	368
	Measurement with rear shaft
Model	382.111/123/15/17/18, 384.06/07/2, 634.0, 979.2
	Measurement with rear shaft

Front axle/rear axle adjustments

Number	Designation			Vehicle 979.2	Vehicle 634.081
BE40.20-B-1002-19A	Allowed side displacement of the front axle and rear axle	between the axle and the chassis center	mm	5	5
		between the front axle and rear axle	mm	5	10

Front axle/rear axle adjustments

Number	Designation			Vehicles 368.0/1, 382.1, 384.0/2, 634.0
BE40.20-B-1002-19A	Allowed side displacement of the front axle and rear axle	between the axle and the chassis center	mm	5
		between the front axle and rear axle	mm	10

Measurement 1st front axle:
 The measuring procedure of the axle lateral displacement depends on the equipment. Refer to the operating manual of the respective equipment to be utilized.
 Front shaft should be in the exact position "straight forward rolling". The distance (a) should be the same on both sides.

1	Fasten half measuring ruler (1) on the same spot to the left and right of chassis frame at the front of the 1st front shaft

2	Position the projectors (5) on the projector support (4) on the 1st front shaft

3	Direct the light beams of the projectors (5) over the scales and read out the values

 01 scale division corresponds to 10 mm.

4	Calculate 1st front shaft offset in relation to the chassis frame and record it on the measuring sheet

 The lateral displacement value is half the difference of the two measuring values. The calculated value must be according to the nominal value.
Example of the axle lateral displacement calculation:
X = Value measured on the left side scale = 30 mm.
Y = Value measured on the right side scale = 40 mm.
Lateral displacement = ( Y - X) / 2 then (40-30) / 2 = 5 mm.

B40.20-0012-11

Measurement in vehicles with 2 directional front axles:
 Front shaft should be in the exact position "straight forward rolling".

5	Position the measurement stands (2) to the left and right of the 2nd front shaft, on the lower part, centered and supported on the wheel hubs

6	Direct the light beams of the projectors (5) over the scales and read out the values

 01 division on the scale corresponds to 10 mm.

7	Calculate 2nd front shaft offset in relation to the 1st front shaft and record it on the measuring sheet

 The lateral displacement value is half the difference of the two measuring values.

B40.20-0009-11

B40.20-0010-09

Measurement of the rear axles:

 Front shaft should be in the exact position "straight forward rolling".

8	Position the measurement stands (2) to the left and right of the 2nd rear shaft, on the lower part, centered and supported on the wheel hubs

9	Direct the light beams of the projectors (5) over the scales and read out the values

 01 division on the scale corresponds to 10 mm.

10	Calculate 2nd rear shaft offset in relation to the 1st front shaft and record it on the measuring sheet .

 The lateral displacement value is half the difference of the two measuring values.

11	Reposition the measuring stands (2) on the 1st rear axle and proceed in the same way

 On vehicles with only 01 rear axle the procedure is identical.