Installation Instructions
7
STEERING
II
Operation of Relief Valve
8193F706
81700·82100·82400 WSM, 11772
t
_
High
Pressure
(1)
Adjusting
Screw
(2) Lock
Nut
(3) Spring (4) Poppet
(5)
Valve Housing
This
power
steering
is
equipped
with
a
direct-acting
relief
valve
to
restrict
the
maximum
pressure in
the
hydraulic
circuit
and
to
prevent
breakage
of
the hydraulic equipment.
When the pressure in
the
hydraulic circuit exceeds
the
relief
valve setting pressure in
such
a
case
that
the maximum steering angle
of
the
front
wheels
is
reached
or
road resistance
to
the
front
tires
is
too
great, the spring
(3)
is
compressed
to
generate a gap
between the poppet
(4)
and the valve housing (5).
The
pressure-fed oil flows
to
tank
port
through
the
gap
so
that
pressure
rise
is
restricted.
The
relief valve setting pressure
can
be adjusted by
turning the adjusting screw
(1).
E7-M5