Depending on the manufacture date of the vehicle, the following 3 different seals of the tire pressure control system can be installed in the wheel hub:
Seal 1: Wheel hub with ZGS up to 004 and two radial shaft sealing rings (double seal) on each side of the wheel hub
Seal 2: Wheel hub with ZGS up to 004 and one radial shaft sealing ring (single seal) on each side of the wheel hub
Seal 3: Wheel hub with ZGS as of 005 and one radial shaft sealing ring (single seal) on each side of the wheel hub
Seal 1 |
4 | Bush |
9 | Wheel hub (with ZGS up to 004) |
20 | Retaining ring |
21 | Thrust plate |
22 | Radial shaft sealing ring (brown, oil side) |
23 | Radial shaft sealing ring (black, air side) |
W33.20-1052-05
Seal 2 |
4 | Bush |
9 | Wheel hub (with ZGS up to 004) |
20 | Retaining ring |
21 | Thrust plate |
24 | Radial shaft sealing ring |
25 | Shim |
W33.20-1053-06
Seal 3 |
4 | Bush |
9 | Wheel hub (with ZGS as of 005) |
20 | Retaining ring |
21 | Thrust plate |
24 | Radial shaft sealing ring |
W33.20-1054-05
Disassemble
1 | Remove all parts (4, 20 to 25) from wheel hub (9). |
Perform the operation step according to which seal is installed. |