Power Assisted Steering System; P/S System Construction; Steering Gear Case Construction - Suzuki GRAND VITARA 2005 Service Manual

6C-1 Power Assisted Steering System:

Power Assisted Steering System

P/S System Construction

The power steering (P/S) system in this vehicle reduces the driver's effort needed in turning the steering wheel by
utilizing the hydraulic pressure generated by the power steering (P/S) pump (2) which is driven by the engine.
It is an integral type with the rack and pinion gears and the control valve unit, hydraulic pressure cylinder unit all built in
the steering gear case (1).

Steering Gear Case Construction

The steering gear case consists of two sections: one
including a cylinder and the other a valve. Main
components of the cylinder section are a gear case (7), a
rack (8) and a tube and those of the valve section are a
valve case (10), a sleeve (4) and a stub shaft (2). The
sleeve is linked with the pinion (6) through a pin (1) and
the valve and stub shaft are integrated into one unit.
Then the pinion and the stub shaft are linked to each
other by means of the torsion bar (3).
Thus, when the stub shaft moves, the valve changes its
position, thereby switching the hydraulic passage from
the pump to the cylinder to help steering operation.
When turning the steering wheel feels heavy due to P/S
fluid leakage or for some other reason (i.e., when in the
manual steering mode), the stub shaft and pinion are in
direct linkage and the force is output directly through the
pinion and rack.
General Description
3
2
1
3. P/S fluid reservoir
S5JB0B6301002
5. Bearing
9. Ferrule
I5JB0B630001-01
1
2
3
4
9
10
5
6
7
8
S5JB0B6301001
I5JB0A630002-01