Determine installed dimension of drive pinion gear · ar3530b045801b · Mercedes-Benz WIS

AR35.30-B-0458-01B

Determine installed dimension of drive pinion gear

Rear axle	741.91, 742.80, 745.5/9, 746.5/86/87/97/990/991
Rear axle	741.93, 745.5/9, 746.5/86
Rear axle	741.93, 745.9, 746.5/86/880/97/991
Rear axle	741.95, 746.994/995/997

Modification notes

21.08.2019	Pinion (basic depth and thickness or compensation washers)		BE35.31-B-1005-03C
30.10.2019	Pinion (basic depth and thickness or compensation washers)		BE35.31-B-1005-03C

Differential. ring ear and pinion check values

Number	Designation			Rear axles 742.80, 745.5, 745.9, 746.5, 746.86, 746.87, 746.880, 746.97	Rear axles 741.91/93/95, 746.991/994, 746.995/997
BE35.31-B-1005-03C	Pinion (basic depth and thickness or compensation washers)	Basic depth	mm	98,00	98,00
		Thickness of the compensating washers	mm	0,10, 0,15, 0,20, 0,25, 0,50	0,10, 0,15, 0,20, 0,25, 0,50

Determine installed dimension of drive pinion gear

361 589 00 21 00

Magnetic block

385 589 04 21 00

Adjusting device

001 589 53 21 00

Dial gage

 Each set of bevel gear and drive pinion has a certain assembly measure for the obtainment of the perfect contact marks between the teeth.

Due to the manufacturing tolerances the dimensions generally divert from the standard basic measure

This deviation is printed on the oblique face of the bevel gear and can be positive or negative with regard to the standard basic measure.

There are:

G = basic measurement

G1= Negative measure

G2= Positive measure

1	Install the  dial indicator (1) with the extension rod in the  adjusting equipment (2) without fixing it.

2	Install the standard adjusting device of 98.00 mm (3).

 Adjust the dial indicator to zero with a preload of 2 mm.

B35.31-0043-01

 Example: G= 98.00 mm - Basic drive pinion measure

B35.30-0060-01

3	Install the  adjusting equipment (2) by resting the half-disks of the tool on the housing of the differential case bearings and the probe tip of the dial indicator on the support surface of the  magnetic block.

 Spin the  adjusting equipment (2) radially to one side and to the other until determining the smallest point indicated on the scale of the  dial indicator (1).

4	Check the basic dimension observing the divergence from the value indicated on the bevel gear .

B35.31-0044-01

 Example: G1= 98.00 mm - 0.20 - 97.80 mm

B35.30-0061-01

Negative measure

 Example: G2= 98.00 mm + 0.20 = 98.20 mm

B35.30-0062-01

Positive measure

5	Observe the deviation of the basic depth recorded on the drive pinion top or on the outer face of the ring gear. .

 Example:
(289) -0,20 (G1)
(289) +0,20 (G2)
The first group of numbers (289) represents the gear set number, the second recording (-0.20 or +0.20) indicates the deviation in relation to the basic measure.
Example of a gear set 289/ -0,20:
- Basic measure: 98.00 mm
- Deviation indicated on the ring gear: -0.20 mm
- Basic measure for adjustment of the drive pinion: (G1) = 97.80 mm

6	Remove or install compensating washers according to the measure obtained in the checking.

 Have in mind the basic measure (G).