W35.30-1002-06
Shown on rear axle 748.59
1 Screw
2 Rear axle shaft
3 Four-point support
4 Differential assembly
5 Propeller shaft
6 Temperature sender plug
7 Compressed-air line
8 Sealing ring
9 Screw
| Removing | ||
| Notes on evaluating leakages | ||
1 | Drain oil from rear axle | ||
| Rear axle - oil change | ||
2 | Remove anti-roll bar from rear axle | For vehicles with air suspension only. | |
3 | Mechanically locking differential lock | ||
4 | Remove compressed air line (7) from differential lock | ||
5 | Disconnect vent line from connection on differential assembly in the area of the differential lock | Only with rear axle 746.21. | |
6 | Unscrew bolts (1) and pull out rear axle shafts (2) | Pull out rear axle shafts by approx. | |
7 | Remove propeller shaft (5) | Disconnect propeller shaft from rear axle only. Support propeller shaft to prevent it dropping down. | |
8 | Remove temperature sender plug (6) | ||
9 | Attach removal fixture to differential assembly (4) | ||
Rear axle model designation 746.21 removal fixture for differential assembly HL6 | Lifter mounting adapter | ||
Rear axle model designation 748.59 removal fixture for differential assembly HL8 | Lifter mounting adapter | ||
10 | Remove differential assembly (4) | Workshop-pit lifter electric-hydraulic - over 7.0 t | |
| Install | ||
11 | Clean sealing surfaces on axle housing and on differential assembly and coat with sealing compound. | With rear axle model designation 746.21 | |
With rear axle model designation 748.59 | |||
12 | Screw guide bolts into axle housing | ||
| Guide bolts for installing differential assembly | ||
13 | Grease four-point support (3) in axle housing | ||
14 | Pour oil into differential | Only with rear axle model designation 746.21 when installing a sealed differential. | |
Before installing the differential assembly with sealed differential in the axle housing, 0.5 l of oil must be poured into the differential, otherwise the gears of the differential will not be lubricated and the entire differential assembly will be irreparably damaged. | |||
| Differential of differential assembly modified | Only rear axle 746.21 | |
15 | Install differential assembly (4) using extractor and installation device | ||
Rear axle model designation 746.21 removal fixture for differential assembly HL6 | Lifter mounting adapter | ||
Rear axle model designation 748.59 removal fixture for differential assembly HL8 | Lifter mounting adapter | ||
Workshop-pit lifter electric-hydraulic - over 7.0 t | |||
| |||
16 | Clean sealing surface on rear axle shaft flange (2) and on the wheel hubs, and apply sealant | ||
17 | Install rear axle shafts (2) | | |
18 | Connect temperature sensor connector (6) | ||
19 | Attach propeller shaft (5) | | |
20 | Attach compressed-air line (7) to differential lock | Use new sealing rings (8). | |
21 | Release mechanical lock from differential lock | ||
22 | Attach vent line at differential assembly | Only with rear axle model designation 746.21. | |
23 | Install anti-roll bar on rear axle | For vehicles with air suspension only. | |
24 | Fill rear axle with oil | ||
| Rear axle - oil change |
Rear axle shaft
Number | Designation | Rear axle 746.21, 748.590 | ||
BA35.30-N-1001-01C | Screw/bolt, rear axle shaft to wheel hub | M181.5 | Nm | 420 |
M141.5 | Nm | - | ||
M161.5 | Nm | - | ||
Differential assembly with differential
Number | Designation | Rear axle 746.21 | Rear axle 748.590 | |
BA35.30-N-1001-03D | Bolt, differential assembly at axle housing | Nm | 190 | 230 |
Propeller shaft
Number | Designation | Model 374 | Model 375.3, 950, 952, 953, 954, 957, 958.2 | ||
BA41.10-N-1002-01F | Bolt/nut, propeller shaft to flange connection | M10 | Nm | 60 | 60 |
M12 | Nm | 100 | 100 | ||
M14 | Nm | 160 | 160 | ||
M16 | Nm | 200 | 200 | ||
Propeller shaft
Number | Designation | Model 375.4, 940, 942, 943, 944, 958.4 | Model | ||
BA41.10-N-1002-01F | Bolt/nut, propeller shaft to flange connection | M10 | Nm | 60 | 60 |
M12 | Nm | 100 | 100 | ||
M14 | Nm | 160 | 160 | ||
M16 | Nm | 200 | 200 | ||
Rear axle
Number | Designation | Rear axle | Rear axle | Rear axle | ||
BF35.10-N-1001-01E | Rear axle | Filling capacity | l | 15 | 11 | 11 |
Sealed differential | l | 0,5 | 0,5 | 0,5 | ||
Specifications for Operating Fluids | Sheet | - | - | |||
Sheet | - | - | ||||
Sheet | - | |||||
Sheet | ||||||
Repair materials
Number | Designation | Order number |
BR00.45-Z-1013-01A | Loctite 5970 sealant | A 003 989 98 20 |
BR00.45-Z-1012-01A | Sealant, Omnifit FD 3041 | A 002 989 47 20 10 |
BR00.45-Z-1034-06A | MB multipurpose grease | A 001 989 34 51 10 |