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S453_077
S453_114
Adjustable steering booster pump
The adjustable steering booster pump is mounted on
the engine below the alternator, and is driven by the
belt drive of the engine. It is used in all T5 2010
vehicles with a diesel engine.
Structure and function
●
The adjustable steering booster pump operates
according to the functional principle of an
adjustable radial piston pump.
●
The pump has a cam disc, allowing the vanes to
be adjusted.
●
The delivery rate can be varied by the different
positions of the vanes.
Steering booster pump
Input
from
servo oil tank
Pressurised oil to
steering box
(output)
Control piston
Cam disc
Stroke adjustment
activation on both sides
Rotor
Vanes
(11 pieces)
Outer ring
●
The adjustment enables the pressure of the
hydraulic pump to be adapted to the engine
speed, thereby ensuring that the delivery pressure
of the pump remains approximately constant.
●
Advantage: This avoids any unnecessarily high
power consumption by the hydraulic pump. As a
result, fuel consumption is reduced.
