RELIEF VALVE
Relief valve prevents damage to the lubrication system due
to
high oil pressure. Control range of
the
relief valve is
196
to
441
KPa,
(28
to
64
psL)
When oil pressure exceeds the upper limit, the
ball
is
pushed back by high pressure oil and the oil escapes.
BY·PASS VALVE
Oil filter cartridge has a by-pass valve inside,
to
prevent the lack of lubrication oil
in
the engine, if
the
oil filter element is clogged. When the pressure difference before filtering and after is more
than
98.1
kPa
(14.2
psi). the by-pass valve opens and lets the oil pass
to
each part of engine
without passing through the
filter.
Relief valve
and
by-pass valve
1.
Relief valve
2. By-pass valve
3.
From pump
4.
To
rocker arm shaft and camshaft
(1)
5.
To
crankshaft
34
t
(3)
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