Steering Column Shaft
| Item | Description |
|---|---|
| 1 | Double Universal Joint (UJ) |
| 2 | Steering bulkhead seal |
| 3 | UJ |
| 4 | Inner shaft |
| 5 | Outer shaft |
| 6 | Boot |
The upper shaft consists of inner and outer pipes that can move telescopically to:
- Permit system assembly.
- Allow steering wheel adjustment.
- Isolate the steering wheel from any movement of the steering gear during an impact.
A Universal Joint (UJ) connects the inner pipe to the steering column. An isolator disc, between the UJ and the inner pipe, reduces Noise, Vibration and Harshness (NVH) in the steering column.
A steering bulkhead seal is installed on a bearing sleeve on the outer shaft. It seals the upper shaft where it passes through the engine and secondary bulkheads. A bearing allows the upper shaft to rotate within the seal assembly.
The lower shaft consists of a double UJ with a stub shaft and pinion extension. This provides the connection to the upper shaft and the steering gear respectively. The UJ is equipped with a corrugated boot.