32 11... Notes on checking steering backlash on vehicles with rack-and-pinion steering: Notes

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NOTE: The evaluation "steering backlash" is made usually when the front axle is raised, where the track rod is angled.

The force introduced via the track rod is divided into a horizontal force and a vertical force relieving the thrust member (1) against the spring (2).

The steering box is depressurized on account of no hydraulic assistance due to engine standstill and is thus not preloaded!

Fig 1: Identifying Thrust Member, Spring And Rack

Courtesy of BMW OF NORTH AMERICA, INC.

The play created in this way is incorrectly referred to as steering backlash.

3 = Rack