AR33.30-W-0470-04C | Checking friction torque of tapered roller bearings | ||
| Clamp for clamping the assembled drive pinion |
Test values for drive pinion
Number | Designation | Front axles 731.720, 733.050 | |
BE33.30-N-1001-02D | Friction coefficient of tapered roller bearing | Nm | 1.4...4.2 |
745 589 01 21 00
Torque wrench
Socket
001 589 74 09 00
Repair materials
Number | Designation | Order number |
BR00.45-Z-1023-06A | Hypoid gear oil | A 000 989 28 03 |
D35.30-0132-01
1 Place the shop-made clamp (1) on the outer races of the tapered roller bearings and clamp the drive pinion gear in the vise.
2 Lubricate the tapered roller bearings thoroughly and turn the drive pinion gear at least 10 times.
3 After turning the drive pinion gear continuously at least three times, measure the friction torque when turning the drive pinion gear using .
D35.30-0133-01
The friction torque must lie within the specified range. If the torque is too high, select a thinner compensating ring (2), and vice versa. Aim for the lower value if the tapered roller bearings are run in; the higher value if they are new.