Figure 24.4 Schematic arrangements of linkage unit PAS: (a) light vehicle (b) heavy vehicle
24.3 POWER-ASSISTED STEERING
COMPONENTS
Hydraulic pump
This supplies the hydraulic energy for the PAS system
and is mounted from and driven by the engine. Accord-
ing to installation requirements the pump may be pro-
vided wth a V-belt and pulley adjustable drive, taken
either directly from the crankshaft pulley or via an
intermediate pulley. Alternatively, the pump can be
driven in tandem with and flange mounted to one o
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