![background image](http://html1.mh-extra.com/html/jcb/js130/js130_service-manual_3610745288.webp)
33 - 10
Slew Operation (SW) Priority Circuit
(cont’d)
When pilot pressure is applied to port
al1
, by operating the
left hand joystick controller, the spool
C
moves to allow oil
from pump
P1
to lift the check valve
F
and enter outlet port
AL1
.
When the slew and dipper spools are operated
simultaneously, the main flow of oil from pump
P1
opens
check valve
F
and operates the slew motor. Oil also passes
through a restrictor
G
and is directed via the parallel gallery
to the dipper ram, thus ensuring priority oil feed to the slew
motor. Oil flowing from pump
P2
passes through the high
pressure gallery into the open port of the dipper spool to
combine with the flow from pump
P1
. Oil returns to tank via
port
AL3
.
Section E
Hydraulics
9803/6410
Section E
33 - 10
Issue 1
Control Valve
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...
Page 207: ......
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...