60 - 5
Section E
Hydraulics
9803/6410
Section E
60 - 5
Issue 1
Slew Brake Valve
Operation (JS130) (cont’d)
Slew Brake (50% Application)
Five seconds after the control lever has been returned to
neutral, an electric signal from the controller operates
solenoid valve
7
and spool
1
moves down.
Oil in the pressure reducing valve spring chamber
d
is
connected to tank passageway
T
.
Pilot pressure entering port
P
flows to passageway
a
and
chamber
b
and tries to lift the reducing valve spool
2
. Oil in
chamber
b
is throttled into passageway
e
and spring
chamber
d
and continues to tank.
Simultaneously, part of the flow from chamber
b
flows
through passageway
c
to the solenoid control valve
6
,
through port
B
and to the brake port of the slew motor. Oil at
the spring release pressure of the reducing valve
8
enters
the brake area of the slew motor and 50% brake force is
applied.
JS02110
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 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...