Assembling differential

AR35.30-D-4300-03R

Assembling differential

Rear axle

741.408 in model 909

except code A71 (Differential lock rear axle)

Test and adjustment values for differential gear

Number

Designation

REAR AXLE 741.4 except CODE A71 (one-piece)

BE35.30-N-1001-03A

Friction torque of differential

with plastic spherical washers

Nm

50...80

with steel spherical washers

Nm

30...50

Repair materials

Number

Designation

Order number

BR00.45-Z-1028-06A

Molykote paste HTP special lubricating grease

Use corresponding commercially available repair materials.

BR00.45-Z-1029-06A

WHS LN 776 special lubricating paste

Use corresponding commercially available repair materials.

1

Fit shims (3) on rear axle side gears (4).

2

Install rear axle side gears (4) in the differential case.

3

 Insert drift (1) into one rear axle side gear (4).

4

Fit both differential pinions (6) with spherical washers (5) on both sides and arrange in the correct installation position.

5

Using an  assembly drift (2), fix the differential pinions (6) and spherical washers (5) in place.

6

Fit torque wrench onto the  drift (1) at the rear axle side gear (4).

7

 Check the friction torque (total friction moment) of the differential and compare with the specified value. 

 The total friction moment can be changed by adjusting the thickness of the spherical washers (5). The spherical washers (5) are available in thicknesses from 1.3 mm to 1.7 mm in intervals of 0.05 mm.

8

If necessary, replace spherical washers (5) and measure total friction moment again.

9

Drive differential pinion shaft (7) into the differential case so that the roll pin can be mounted.

10

Drive new roll pin (8) into the differential case to secure the differential pinion shaft (7).