1 | Radial seal |
2 | Radial seal |
3 | Inner tapered roller bearing |
4 | Wheel hub |
5 | Outer tapered roller bearing |
6 | Cover plate |
7 | Top washer |
8 | Bolt |
9 | Tightening nut |
10 | Gasket |
11 | Cover |
12 | Bolt |
B33.20-0036-06
| Remove | ||
1 | Activate parking brake and loose securing nuts from front wheels | ||
2 | Lift vehicle and support it on racks located under the front axle beam | The easels must be supported on the axle ends. | |
3 | Remove the front wheels | ||
4 | Remove wheel hubs (4) | ||
5 | Disassemble the hubs from the wheels (4) | ||
| Disassemble/assemble front wheel hub | Front axle 739.398 | |
| Front axles 739.309/332/335/399 | ||
| Clean | ||
6 | Remove the grease used on wheel hub (4) and tapered bearings (3, 5) | Do not use solvents to remove the grease and clean the bearings and the wheel hub. For cleaning, use a clean and lint-free cloth. | |
| Check | ||
7 | Check the seal track ring surface wearing, if necessary, replace it | ||
| Front axles 733.890, 739.309/332/335/398/399 | ||
The track ring must be replaced by a new one every time that the friction surface presents damages, wearing or grooves. | |||
8 | Check the tapered bearings (3, 5) for wearing or damages | In case of wear or damage in any of the bearings - either internal or external - or their races, they should be replaced always in pairs. | |
If necessary, replace tapered bearings with separated invoice. | |||
| Install | ||
9 | Assemble the wheels hubs (4) | ||
| Disassemble/assemble front wheel hub | Front axle 739.398 | |
| Front axles 739.309/332/335/399 | ||
Grease the conic bearings. Put specified grease quantity in wheels hubs and hubcaps. | |||
Install a news radial seal. | |||
Wheel hub grease (per hub) | |||
Hubcap grease | |||
10 | Assemble wheel hub (4) | ||
11 | Install the front wheels | ||
12 | Lower the vehicle from the safety stands and tighten the wheel fastening nuts | Retighten securing nuts after first 50 to 100 km. | |
Front axles 739.398/399Nuts with ball washer - centering with washer |
Wheel hub, hub hubcap |
Number | Designation | Front axle 739.3/4/5 | Front axle 733.890 | |||
BF33.20-B-1001-01A | Wheel hub grease (per hub) | Filling volume | gramas | 180 | 150 | |
Class | Specification (except Brazil) | MB 267.1 | MB 267.1 | |||
Specification (Brazil) | Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes. | Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes. |
Wheel hub, hub hubcap |
Number | Designation | Front axle 739.3/4/5 | Front axle 733.890 | |||
BF33.20-B-1002-01A | Hubcap grease | Replenishment quantity | gramas | 40 | 40 | |
Class | Specification (except Brazil) | MB 267.1 | MB 267.1 | |||
Specification (Brazil) | Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes. | Consultar documento AH00.40-B-0001-01MBF no site Mercedes-Benz / Guia de Lubrificantes. |