Checking friction torque of tapered roller bearings
Tyyppi ar · aihe 35.30 · versio 0400 · 2020-09-04
Koskee: Rear axle 742.82 in model 368.0/1, 384.2/3 Rear axle 745, 746.27 in model 382, 634.0 Rear axle 745, 746.984/999 in model 384.0 Rear axle 745.0 in model 693, 694, 695 Rear axle 745.0, 746.987/988/996/998 in model 958.0/1 Rear axle 746.881/882 in model 368.0/1
Ei saatavilla kielellä ”fi”; näytetään kielellä Englanti.
Checking friction torque of tapered roller bearings
Rear axle
742.82 in model 368.0/1, 384.2/3
Rear axle
745, 746.27 in model 382, 634.0
Rear axle
745, 746.984/999 in model 384.0
Rear axle
745.0 in model 693, 694, 695
Rear axle
745.0, 746.987/988/996/998 in model 958.0/1
Rear axle
746.881/882 in model 368.0/1
Modification notes
30.10.2019
Collar nut of the pinion drive flange
BA35.30-B-1002-03H
Pinion
Number
Designation
Rear axle 745.0
BA35.30-B-1001-06C
Mounting nut of pinion coupling flange
M32
Nm
-
M40 Hex
Nm
360
M40 Dodecagonal
Nm
480
Central actuation with differential
Number
Designation
Rear axle 742.82 in vehicle 368.0/1, 384.2/3
BA35.30-B-1002-03H
Collar nut of the pinion drive flange
M40x1.5
Nm
500
M45x1.5
Nm
1200
M55X1.5
Nm
-
M32x1.5
Nm
-
001 589 75 09 00
Socket wrench bit
742 589 02 07 00
Claw-type wrench
745 589 01 21 00
Torque wrench
717 589 00 31 00
Retainer wrench
302 589 01 07 00
Claw-type wrench
1
Install the lock wrench (5) on the drive flange (2) and tighten the collar nut.. .
Tighten the collar nut up to the prescribed torque and do not use any pneumatic tool for its tightening.
2
Continuously rotate the drive pinion a minimum of 10 times to seat the tapered roller bearings.
3
Re-tighten the collar nut.
Tighten the collar nut up to the prescribed torque and do not use any pneumatic tool for its tightening.
4
Remove the locking key (5).
5
Install the torque wrench (4) with the adapter of the socket wrench (3) with the claw type wrench on the collar nut.
6
Manually rotate the torque wrench (4) a few times at the same time, read the rotational torque at constant rotating speed.
Should the friction torque is higher or smaller than the prescribed amount, disassemble again the pinion again and fit a compensation washer as necessary. Repeat the operation as from step 1, until the specified value is obtained.
The distance washer is supplied with a thickness of 1.60 mm with 0.01 mm increments up to a maximum of 2.50 mm.
In axles with used bearings, a friction moment value close to the smallest prescribed value can be found, as the bearing has already seated. For axles with new bearings, a friction moment value close to the highest prescribed value can be found, as the bearing has yet to seat.
7
Reinstall the lock key (5) in the actuation flange (2) and re-tighten the collar nut.
Tighten the collar nut up to the prescribed torque and do not use any pneumatic tool for its tightening.
