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Swing Lock Operation (100% Swing
Brake)
The swing mechanical brake is maintained at 100%
when the swing lock switch is in the ON position. Swing
will not occur even if the swing lever is operated.
When the swing lock switch is in the ON position, an
electric signal enters the monitor and illuminates the P
lamp.
A signal is sent to energise the swing lock solenoid valve
in the multiple valve.
When the swing lock solenoid valve is switched, the
closing pressure of the swing motor mechanical brake
release port P returns to the tank through the multiple
valve port A3 and swing mechanical brake is activated
and is maintained at 100%.
Section E Hydraulics
9803/6020
Section E
3 - 14
Issue 1
Schematics
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