Hyundai HX140L, Manual

Page: 90 / 819

2-34
SWING LEFT OPERATION WITH ARM OR BOOM OPERATION
When combined operation, mostly same as previous page but the fluid from P2 bypass passage
is empty.
So only the fluid from parallel passage is supplied to the swing motor. Also, parallel passage is
installed the orifice of swing logic valve for supplying the fluid from pump A1 to the boom or the
arm operation prior to the swing operation. In case of the swing right operation with arm or boom
operation, operation is similar. (2)
C2 D2
From RCV
P2 Parallel passage P2 Bypass passage
Tank passage Swing spool
Pd2
Swing logic valve
Orifice
P03
Boom up pilot pressure
Boom 1 spool
14W92MC20
P2 Parallel passage P2 Bypass passage