33 - 8
Boom Lower (BM) Operation
When pilot pressure is applied by operating the right hand
joystick controller, spool
B
moves to the right, closing off the
neutral gallery and allowing oil from pump
P2
to enter the
cylinder port. Oil below check valve
M
flows through ports
G
and
H
to open check valve
K
and pass through port
L
to the
gallery
J
. Pressure in gallery
J
depresses the check valve
M
allowing oil to flow from the ram to the exhaust gallery.
Without pilot pressure, the centre bypass valve and the logic
check valve allow the oil to enter the low pressure gallery
N
and return to tank.
Section E
Hydraulics
9803/6410
Section E
33 - 8
Issue 1
Control Valve
JS01750
Summary of Contents for JS130
Page 65: ...Section 3 Section 3 9803 6410 Issue 1 9 1 9 1 Routine Maintenance Component Location Diagram...
Page 118: ......
Page 119: ...3 1 Section C Electrics 9803 6410 Section C 3 1 Issue 1 Layout Operator s Cab...
Page 142: ...5 3 Section C Electrics 9803 6410 Section C 5 3 Issue 1 Pump Control FLOW CHART...
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Page 209: ......
Page 210: ...3 4 Section E Hydraulics 9803 6410 Section E 3 4 Issue 2 Schematics Shuttle Block...
Page 532: ...Contents Page No Technical Data 1 1 i Engine 9803 6410 i Issue 1 Section K Section K...