AR35.30-A-0470LA | Disassembling and assembling pinion housing with drive pinion | 30.8.07 |
REAR AXLE 748.785 in MODEL 8AB390.053 /054
A35.30-0023-09
1 Collar nut
2 Drive flange
3 Radial sealing ring
4 Tapered roller bearing
9 Tapered roller bearing
10 Drive pinion
11 Bearing
5 Bearing outer race
6 Pinion housing
7 Spacer ring
8 Bearing outer race
| Removing | ||
Danger! | Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels. | |
Danger! | Risk of injury to skin and eyes caused by handling hot or glowing objects. | Wear safety gloves, protective clothing and safety glasses, if necessary. | |
1 | Drain oil from rear axle | ||
| Rear axle - oil change | ||
2 | Remove rear axle shafts | ||
3 | Remove propeller shaft | ||
4 | Remove left combination cylinder | ||
5 | Remove differential assembly. | ||
6 | Remove ring gear with differential | ||
7 | Remove pinion housing (6) with drive pinion (10) | ||
8 | Remove radial sealing ring (3) | ||
| Disassemble | ||
9 | Press drive pinion (10) out of pinion housing (6) | ||
10 | Remove tapered roller bearing (4) and spacer ring (7) | ||
11 | Remove bearing outer race (5) | Use suitable puller. | |
12 | Remove bearing outer race (8) | | |
13 | Remove tapered roller bearing (9) and bearing (11) | | |
| Assemble | ||
14 | Clean components and check for wear and damage, replace if necessary | ||
15 | Heat up bearing (11) to approx. 80 °C and press up to the end stop on drive pinion (10) | The inscription on bearing (11) must point towards the differential. Use a suitable drift. | |
16 | Heat up tapered roller bearing (9) to approx. 80 °C and press up to the end stop on drive pinion (10) | Use a suitable drift. | |
17 | Press bearing outer races (5, 8) up to the end stop in pinion housing (6) | Use suitable drifts. | |
18 | Insert drive pinion (10) with spacer ring (7) into the pinion housing (6) | ||
19 | Heat up tapered roller bearing (4) to approx. 80 °C and press up to the end stop on drive pinion (10) | ||
20 | Checking friction torque of tapered roller bearings | ||
If the specified values are not achieved: | |||
Remove drive pinion (10) and reinstall with a suitable spacer ring (7). | |||
Increase friction torque: Use spacer ring (7) with a lower thickness. Reduce friction torque: Use spacer ring (7) of greater thickness. | |||
| Install | ||
21 | Install radial sealing ring (3) | ||
22 | Install pinion housing (6) with drive pinion (10) | ||
23 | Install crown wheel with differential | ||
24 | Adjust gear backlash at differential assembly | ||
25 | Install differential assembly | ||
26 | Install left combination cylinder | ||
27 | Install propeller shaft | ||
28 | Install rear axle shafts | ||
29 | Fill rear axle with oil | ||
| Rear axle - oil change | ||
30 | Adjust clearance at the rear axle |
Test and adjustment values for rear axle drive
Number | Designation | Rear axle | ||
BE35.30-N-1002-01M | Friction torque of tapered roller bearings on drive pinion gear | Nm | 1,1 to 2,3 | |
000 589 45 33 00
Puller
Puller
000 589 16 33 00
Referenced documents
- ap3500a3501la Rear axle - oil change
- ar3530a0432la Remove/install differential assembly
- ar3530a0464la Remove/install crown wheel with differential
- ar3530a0469la Remove/install pinion housing with drive pinion
- ar3530a047004la Checking friction torque of tapered roller bearings
- ar3530a0475la Adjust gear backlash at differential assembly
- ar3530a0620la Remove/install rear axle shaft
- ar3530a4670la Remove/install radial seal at drive pinion gear
- ar4110a0050la Remove/install propeller shaft
- ar4210a0181la Adjust play of drum brake
- ar4210a0700la Remove, install combination cylinder
- as0000z000201a Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.
- as0000z001701a Risk of injury caused by scraping or cutting body parts on sharp vehicle parts