What must be done before servicing a clock spring in a steering column?

Before servicing a clock spring in a steering column, it is crucial to position the steering wheel straight ahead. This step is essential because the clock spring is designed to maintain a connection between the steering wheel and the vehicle's electrical systems while allowing for the rotation of the steering wheel. If the steering wheel is not centered when the clock spring is installed or serviced, there is a risk of damaging the clock spring or causing it to fail prematurely due to being under tension or twisted.

By ensuring that the steering wheel is straight ahead, the technician can accurately re-center the clock spring and maintain its proper function. This prevents any potential issues related to the steering and airbag systems, which are linked to the clock spring. Proper alignment is vital for the performance and safety of the vehicle, especially concerning the airbag deployment and other electronically controlled functions associated with the steering wheel.

The other actions, while potentially important in certain contexts, do not directly relate to the proper servicing of the clock spring itself, as positioning the steering wheel straight ahead ensures that the clock spring operates correctly after reinstallation.