Fluid Reservoir/Filter; Flow Control; Pressure Relief; Steering Pump - Honda Prelude 1993 Service Manual

Flow Control
Fluid trom the pump runs through a metering orifice to
the valve body unit. This creates a pressure diJference
between the pump and valve body unit sides of the
orifice. When pressure in the pump side is higher than
the force ot the spring holding the flow control valve
closed, it pushes the valve down (openl, and excess
fluid returns to the Dumo inlet. The combined etiect ot
the metsring oriJice and the flow control valve provides
a relatively constant flow of Jluid to the valve body unit.
METERING
ORIFICE
To Valve bodv Unit
Prossure Relief
As pr€ssure on the valve body unit side builds up, it
pushes the relief valve ball (inside the tlow control
valve) up against its spring, and excess fluid returns to
the pump inlet. As the pressure under the flow control
valve drops, the relief valve ball is closed by its spring,
and the flow control valve is forced down again. allow-
ing excess lluid from the pump side to return to the in-
let. This tlow control valve-relief valve cylinder keeps
pump output pressure between TOOO-8OOO kPa
( 7 O - 8 0 k g i c m ' . 9 9 5 - 1 , 1 3 8 p s i ) .
RELIEF VALVE OPEN
Fluid Reservoir/Filter
A one-piece reservoir and filter is attached to the tender
apron on the left side of the engine compartment. The
fluid and the filter/reservoir should be replaced if the
system is opened for repairs, or if the fluid gets water or
dirt in it.
CAUTION: Use only Honda Powsr sleering
Fluid-V, The use ot othel fluid such as A.T.F., or
othor manufacturor's power stsering fluid. will
cause damago to the system.
<-
Steering
Speed Sensor
From Valve body Unit
<r
To Steering Pump
RELIEF VALVE EALL
1 7 - 9