Power Steering - Power-Assisted Recirculating Ball: Description: Notes
Power steering is composed of power steering pump and steering gear. Some models use a VT27 pump, which has a separate oil reservoir, and some models use a VT49 pump, which has an integral oil reservoir.
Both power steering pumps are engine driven vane type with control valve. The purpose of the steering gear pump is to supply fluid (under pressure) to the steering gear.
Steering gear has integral piston/steering nut. Fluid pressure to each side of piston/steering nut is controlled by a control valve which is moved by a lever from steering column shaft.
NOTE:
VT27 pump (separate reservoir) and VT49 pump (integral reservoir) are similar, however removal and overhaul procedures for the VT49 pump were not available at time of publication.