Yanmar 3JH3E - 2-5 Oil pressure regulating valve construction

Chapter 5 Lubrication System
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2-5 Oil pressure regulating valve construction
The oil pressure regulating valve attached with lube oil
pump controls the oil pressure from the time the lube oil
leaves the filter and is cooled
in the lube oif cooler until
just before it enters the cylinder
body main gallery.
When the pressure of lube oil entering the cylinder body
main gallery exceeds the setting, the regulating valve pis-
ton opens the bypass hole and lube oil flows back into the
oil pan.
Regulating pressure
Printed in Japan
HINSHr-H80-09
3.5 ~ 4.5 kg/cm
2
5-5