Steering (Steering column *): Description and operation

STEERING COLUMN *

Note: On models fitted with Supplementary Restraint System Airbags, see SUPPLEMENTARY RESTRAINT SYSTEM.

The steering column contains a two piece collapsible steering shaft running in a bearing at its upper end and a bush at its base.

The steering column mountings are designed to deform or move and absorb energy in the event of an impact. At its base, the clamp (1) securing the column will allow it to slide when under load while at the opposite end of the column, a claw (2) welded to the column engages upon an energy absorbing plate (3) secured to the vehicle body. In the event of an impact the column moves forward, bending the plate (4) which absorbs energy as it deforms.

The upper end of the column is supported by a single bolt, held captive in the bracket by a locking plate. Releasing the column adjustment lever slackens the nut securing this bolt and allows movement along the slots in the support bracket thus providing adjustment of the column height.

When the steering wheel is moved the turning effort of the shaft is transmitted to the pinion shaft of the steering rack by an intermediate shaft mounted between two universal joints. These joints allow for adjustments made to the column position and for the movement of the column in an impact.