Power Steering - Torsion Bar: Description

Torsion bar power steering unit includes a worm and one-piece rack piston, which is meshed to the gear teeth on steering sector shaft. It also includes a hydraulic valve, valve actuator, input shaft and torsion bar assembly which are mounted on the end of the worm shaft and operated by twisting action of the torsion bar. It is designed with the one-piece rack-piston, worm and sector shaft in one housing and valve spool in an attaching housing, making possible internal fluid passages between valve and cylinder, thus eliminating all external lines and hoses (except pressure and return hoses between pump and gear assembly).