Notes on checking the steering backlash on vehicles with rack and pinion steering
NOTE:
The "steering backlash" evaluation usually occurs when the front axle is raised and the tie rod is folded in.
The force introduced via the tie rod is divided into a horizontal force and a vertical force, releasing the thrust piece (1) against the spring (2).
The steering gear is depressurized on account of no hydraulic assistance due to engine stop and is thus not preloaded!
The play that results from this is incorrectly designated as steering backlash.
The force introduced via the tie rod is divided into a horizontal force and a vertical force, releasing the thrust piece (1) against the spring (2).
The steering gear is depressurized on account of no hydraulic assistance due to engine stop and is thus not preloaded!
The play that results from this is incorrectly designated as steering backlash.
3 = rack
Solution:
- Check the tie rod backlash only in loaded condition or in the design position.
- Checking with front axle raised:
- To evaluate the play of the steering gear, it is necessary to pressurize the steering gear via its servo system!
- The combustion engine must be running during hydraulically or electrically assisted steering for this purpose
Desired state:
Steering must be backlash-free in all components!