A dual shaft rack and pinion steering assembly for a vehicle includes a
housing mounted to the vehicle and containing first and second parallel
shafts linked to one another for synchronized axial movement. The first
and second shafts are slidably positioned within the housing. One of the
shafts includes a piston operable by hydraulic fluid contained within the
housing. The other of the shafts includes a rack of teeth for meshing
with a pinion gear driven by a steering column. The hydraulic fluid
operates the piston by pressure coordinated with the driving of the rack
by the pinion gear to assist the coordinated movement of the dual shaft
assembly. The linked parallel shafts are connected to a drag link to
direct a first wheel in response to axial movement of the shafts, which
is further connected to a cross car link simultaneously directing a
second wheel.