Steering System worm gear box

A worm gear box style of steering system is constructed of two main parts much like the rack and pinion style system. The main part is called a worm gear; the other is a selector shaft gear. The worm gear is connected to the pitman arm and then to a center link and tie rod ends. The opposing end of the center link is supported by an idler arm, which is located on the opposite side of the frame from the steering box. The Rack And pinion Steering System


Steering Box (worm)
Steering can be either power or manual. Power steering utilizes a hydraulic pump mounted on the engine, and driven with a serpentine belt. The fluid in the system is held under pressure until the wheel is turned which releases the pressure and applies it to the steering system. The power steering system fluid should be checked at every service interval. Fluid leaks are a common problem on power steering systems. When a leak is detected inspect the system to determine the course of action, then remove damaged or worn parts and reassemble. Refill system with approved fluid for you particular vehicle. When the power steering system is low a groaning noise will be heard when the vehicle steering is activated. This is caused by the power steering pump scavenging for fluid and taking in air.
When the engine is off or the system has run completely out of fluid it will be very difficult to steer the vehicle. It is advised not to move a vehicle with power steering when either of these conditions exists. Any steering component malfunction can cause the vehicle to be uncontrollable. All steering components should be inspected for "play" at regular intervals and replaced as needed. When steering components are replaced an alignment is required. Power steering system maintenance is required periodically according to the manufacturer's instructions for your vehicle. Most manufacturers recommend having the hydraulic fluid in the power steering system changed every 60,000 miles

Steering System worm gear box