What is the proper procedure for setting steering gear preload?

Setting the steering gear preload correctly is essential for ensuring optimal performance and longevity of the steering system. The correct procedure involves checking the clearances in the gearbox while the steering wheel is centered. This is important because it ensures that the steering mechanism is neither too tight nor too loose, which could lead to poor handling, excessive wear, or even failure of the steering components.

When the steering gear is properly preloaded, it maintains the appropriate resistance to turning without causing excessive friction. By checking clearances while the gear is centered, technicians can adjust the preload to achieve the right balance, ensuring that the driver experiences a smooth and responsive steering feel.

In contrast, setting torque at any wheel position does not take into account the steering gear's alignment and load conditions, risking improper preload adjustments. Disconnecting the steering wheel could lead to misalignment and may not represent the actual conditions during normal operation. Ensuring the drag link is connected is necessary for an overall inspection, but it is not the step specifically aimed at adjusting preload in the steering gear. Thus, checking clearances while centered is the most precise method to achieve the correct preload in the steering system.