Komatsu Utility SK714-5, Shop Manual

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10-10 SK714-5 SK815-5 SK815-5 turbo
2.
FLUSHING RELIEF VALVE
When the oil is sent under pressure to the “A” port, the oil that activated the motor returns to the pump through the “B”
port.
The pressurised oil sent to the
“A” port is also introduced into the chamber “C” . It now pushes the selector valve (1) to
the right ( ). This opens communication between the “B ” port and the oil gallery “D”, which is connected to the over-
pressure limitation valve (2).
If the pressure present at port
“B” exceeds the calibration value of the overpressure limitation valve (2), this valve will
open and discharge the excess oil into the reduction gears.
The valve also functions in the same way when the pressurised oil is sent to the
“B” port. The only difference is that the
selector valve moves to the left ( ), and the oil gallery “D” communicates with the “A” port.
.
RKS01070
1
2
D
C
A B
1
2
D
C
A B
STRUCTURE AND FUNCTION
FINAL DRIVE