AR35.30-A-0459A | Disassemble/assemble drive pinion | 10.3.10 |
REAR AXLE 745.800 in MODEL NAB372.124 /317
A35.30-0009-06
1 Collar nut
2 Drive flange
3 Radial sealing ring
4 Threaded ring
5 Thrust ring
6 Outer tapered roller bearing
7 Outer race of outer bearing
8 Shim ring
9 Circlip
10 Inner race
11 Drive pinion
12 Inner tapered roller bearing
13 Inner race of outer bearing
14 Spacer ring
| Removing | ||
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 ring gear with differential | ||
4 | Remove drive pinion (11) | ||
| Disassemble | ||
5 | Remove circlip (9) | ||
6 | Pull off inner race (10) of cylindrical roller bearing | Use a commercially available puller. | |
7 | Release and unscrew collar nut (1) | Attach the retainer wrench to the drive flange (2). | |
Retainer wrench | |||
8 | Pull off drive flange (2) | Puller | |
9 | Remove threaded ring (4) and thrust ring (5) | ||
10 | Remove radial sealing ring (3) from threaded ring (4) | ||
11 | Pull off outer tapered roller bearing (6) and inner tapered roller bearing (12) | Puller | |
12 | Clean all parts and check for wear, renew if necessary. | The drive pinion (11) and ring gear can only be replaced in pairs. Both parts have the same number. | |
| Assemble | ||
13 | Press on new inner race (10) | Heat up inner race (10) to approx. 80 °C. | |
Hot-air gun | |||
14 | Install circlip (9) | ||
15 | Press on inner tapered roller bearing (12) | Heat inner race to approx. 80 °C. Pay attention to installation position. | |
Hot-air gun | |||
16 | Put on inner outer race (13), outer outer race (7) and spacer ring (14) | Note the installation position! | |
17 | Press on outer tapered roller bearing (6) | Heat inner race to approx. 80 °C. Pay attention to installation position. | |
Hot-air gun | |||
18 | Fit thrust ring (5) | ||
19 | Press new radial sealing ring (3) into threaded ring (4) | Before installing coat the outer surface of the new radial sealing ring (3) with sealant. After installing, grease the sealing lip lightly. | |
Drift | |||
Sealant | |||
Multipurpose grease | |||
20 | Place threaded ring (4) on drive pinion gear (11) | ||
21 | Push on drive flange (2) | Apply a thin coating of oil to the gearing on the shaft of the drive pinion gear (11). | |
Hypoid gear oil | |||
22 | Tighten new collar nut (1) | Attach the retainer wrench to the drive flange (2). | |
| |||
Retainer wrench | |||
23 | Secure collar nut (1) | Detach the retainer wrench. | |
24 | Install compensating ring (8) | ||
Hypoid gear oil | |||
25 | Checking friction torque of tapered roller bearings | ||
Testing unit | |||
| Install | ||
26 | Install drive pinion (11) | ||
27 | Install crown wheel with differential | ||
28 | Install rear axle shafts | ||
29 | Pour in oil at rear axle | ||
| Rear axle - oil change |
Inspection data of rear axle final drive
Number | Designation | Rear axle 745.800 | |
BE35.30-N-1005-01I | Friction torque of tapered roller bearings on drive pinion gear | Nm | 1.4 to 4.2 |
Rear axle drive
Number | Designation | Rear axle 745.800 | ||
BA35.30-N-1004-02G | Collar nut of drive flange to drive pinion | M401.5 | Nm | 360 |
717 589 00 31 00
Puller
Retainer wrench
Puller
Drift
000 589 45 33 00
035 589 01 33 00
312 589 15 15 00
Tester
354 589 01 21 00
Repair materials
Number | Designation | Order number |
BR00.45-Z-1012-01A | Omnifit FD 3041 sealing compound | A 002 989 47 20 10 |
BR00.45-Z-1023-06A | Hypoid gear oil | A 000 989 28 03 |
BR00.45-Z-1034-06A | MB multipurpose grease | A 001 989 34 51 10 |
Referenced documents
- ap3500a3501a Rear axle - oil change
- ar3530a0458a Remove/install drive pinion
- ar3530a045909a Install shim on drive pinion
- ar3530a0464a Remove/install crown wheel with differential
- ar3530a047004a Checking friction torque of tapered roller bearings
- ar3530a0620a Remove/install rear axle shaft
- ar3530a467004a Securing collared nut to drive pinion joint flange
- as0000z000201a Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.