Shibaura ST318, Руководство по ремонту

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(2) Operation (flow of oil)
The oil in the transmission case passes through the filter, is fed under pressure by the oil pump, and enters the Port P
1
of the
control valve.
[When valve is at “O” position]
When the oil pressure is not taken out, adjust the valve to the “O” position. The oil after entering P
1
passes through P
2
and is fed under pressure to the control valve for lifting/lowering the implement.
[When valve is at “S” position]
When the oil pressure is taken out (for front loader, etc.), connect hydraulic piping for an external implement to the
ports C
1
and C
2
and set the valve at the “S” position.
Oil entering P
1
passes through the port C
1
, returns to the port C
2
through the valve on the implement side, and is sent
from the port P
2
as in the above case.
The relief valve is mounted to protect the hydraulic system. When the pressure exceeds a certain value, the valve is
opened to relieve the oil from the port. T to the transmission case. Set valve for the relief valve is 12.74 MPa (130±5
kgf/cm
2
).
T659