Determine/adjust friction torque at drive pinion gear

AR35.30-S-4670-06E

Determine/adjust friction torque at drive pinion gear

Model

447 with engine 274, 651, 654.9

Model

448 with engine 274

 Drive pinion

Number

Designation

Model 447, 448

BA35.30-N-1001-06A

Collar nut of drive flange to drive pinion

Nm

100

1

 Attach torque meter at drive flange (1) of drive pinion, turn with approx. 50 rpm and read off friction torque.

2

Note friction torque.

 After assembly operations on the drive flange (1),the friction torque may exceed the determined value by a maximum of 0.2 Nm. If it is below this, it must be adjusted. If it is above this, the rear axle differential must be replaced.

3

To adjust the friction torque, increase the tightening torque of the collar nut by 10 Nm to the output torque .

 Never correct friction torque by releasing the collar nut.
Otherwise the drive pinion may be damaged.

4

Check friction torque.

 If necessary, repeat adjustment until the friction torque is within the tolerance. If the friction torque is still outside the tolerance after adjusting several times, the rear axle differential must be replaced.