ar3530b047004b

Checking friction torque of tapered roller bearings

Type ar · topic 35.30 · version 0100 · 2016-02-12

Applies to:

Where it sits

Function group 2 Chassis › 35 Rear axle › 35.30 Final drive, drive shafts — Series 693 (models 196) · Series 696 (models 365, 367, 369)

EinPAS 17 Drivetrain/axle › 17.51 Rear axle › 17.51.65 Rear axle differential/axle through-drive — Series 693 (models 196) · Series 696 (models 365, 367, 369)

Also applies to engines/gearboxes: 740 ***, 740 899

AR35.30-B-0470-04B

Checking friction torque of tapered roller bearings

Test values for rear axle center assembly friction torque

Número

Denominação

Axle 740.6

Axle 740.8

BE35.31-B-1001-02A

Preload (friction moment) of the pinion bearings

New bearing

Nm

3...10

3...10

Checking friction torque of tapered roller bearings

001 589 49 21 00

Dynamometer

Checking friction torque of tapered roller bearings

B35.30-0128-01

1 Install the dynamometer (2) with the socket (1) in the flange nut that attaches the drive gear (3).

2 Turn the drive gear (3) manually, at least, three turns and then, turn it with the dynamometer reading the moment of friction.

If the moment of friction is higher or smaller than the specified value, disassemble the pinion again and replace the compensation washer by another with higher smaller thickness, as necessary. Repeat this procedure until you obtain the specified moment of friction.

For reused bearings, which seating was already performed, the moment of friction can be smaller and, for bearings that still requires the seating, the moment of friction can be higher.

3 Lock the flange nut.