Steering Linkage

The steering linkage connects both front wheels to the steering gear through the pitman arm. It consists of an inner and outer tie rod that attach to the steering knuckle and relay rod by ball studs. The relay rod is supported by two idler arms. The idler arms pivot on a support attached to the frame rail that is adjustable. The idler arm support is threaded to allow height adjustment of the arm on the support so the linkage will clear the suspension as the linkage moves from "lock to lock." Original equipment is installed at a preset specification.

The relay rod is attached to the connecting rod. The connecting rod is used to maintain proper geometry in the steering linkage and attaches to and is supported by the pitman arm. The pitman arm is driven by the steering gear. There are lubrication fittings at each joint. There are prevailing torque nuts at the inner pivots and castellated nuts at the knuckle arm. The prevailing torque nuts should be replaced with a new prevailing torque nut any time they are removed for service.

The overall condition of the steering linkage affects steering performance. If parts are bent, damaged, worn or poorly lubricated, improper and possibly dangerous steering action will result.

Whenever any steering linkage components are repaired or replaced, check the steering geometry and front wheel alignment.