TM 9-2320-361-20 1-18. CONTROL SYSTEMS OPERATION (Contd) e. Steering System Operation. Major components of the steering system are: STEERING COLUMN - Supports steering shaft through instrument panel and firewall to steering gear. STEERING WHEEL - Used by operator to control direction of vehicle travel. STEERING ARM - Connects drag link to steering knuckle. TIE ROD - Connects steering knuckles so both front wheels will pivot when steering wheel is turned. DRAG LINK - Transmits movement from pitman arm to the steering arm. STEERING KNUCKLE - Serves as a pivot point and link for the front wheel from the tie rod. PITMAN ARM - Transmits steering torque from steering gear to drag link. STEERING GEAR - Transmits mechanical power from the steering wheel to the pitman arm. 1-43