ENGINE
C. OIL FILTER AND RELIEF VA LV E
The lubricating oil force-fed by the pump is filtered
by the filter cartridge, passing through the filter
element from the outside to the inside. When the
filter element accumulates dirt and the pressure
d i fference between the inside and the outside rises
more than 98 kPa(1.0kgf/c m
2
, 14psi), the bypass
valve (1) opens to allow the oil to flow from the inlet
line to outlet line, bypassing the filter element. The
relief valve (4) in the inlet line allows oil to prevent
damage to the lubricating system, when the oil
pressure rises more than 441 kPa(4.5kgf/c m
2
,
6 4 p s i ) .
(1) Bypass Va l v e (4) Oil Pressure Switch (a) To Idle Gear, Camshaft and Rocker Arm
(2) Bypass Adjusting Spring (5) Relief Valve Ball (b) From Oil Pump
(3) Filter Element (6) Relief Adjusting Spring (c) To Crankshaft Journal and Crankpin
(d) Drain of Relief Va l v e
D. OIL PRESSURE SWITCH
The oil pressure switch is installed on the cylinder
block and leads to the oil passage of the lubricating
oil. When the oil pressure falls below the specified
value, the contacts of the oil pressure switch closes
to turn on the waring lamp (1).
(A) At lower Oil Pressure
(49 KPa (0.5kgf/cm
2
, 7psi) or less)
(B) At Proper Oil Pressure
(1) Warning Lamp (5) Contact
(2) Battery (6) Oil Passage
(3) Rubber Gasket (7) Cylinder Block
(4) Contact River (8) Oil
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