TM 5-2420-230-24-1
5-2. SYSTEM OPERATION.
The system includes the following components:
Steering reservoir
Steering pump
Power steering box
The power steering system provides full-time hydraulic steering. When the engine is running, there is constant
low-pressure oil flowing through the steering box. This constant oil flow provides an instant response and absorbs road shock
to help eliminate steering wheel kick.
The steering wheel, column, and linkages are mechanically connected to the power steering box. Rotary movement of the
steering wheel turns the steering shafts which move an actuating valve in the power steering box, which directs high-pressure
fluid to build up on one side of a piston within the steering box. This high pressure causes the piston to move, which in turn
moves the Pitman arm and drag link. When the steering shaft rotation stops, the actuating valve returns to its N (Neutral)
position. Internal relief valves unload the hydraulic system if the wheels reach full lock.
Change 1
