Hyundai HX140L, Manual

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2-31
BUCKET OUT OPERATION (TYPE 1)
During the bucket out operation, the pilot secondary pressure from RCV is supplied to port Pb5
of the spring opposite side and shifts the bucket spool in the right direction.
The bypass passage is shut off by the movement of the bucket spool and the hydraulic fluid from
pump A2 entered P1 parallel passage and is directed to the port B5 through the check 1 of
bucket logic valve.
At the same time, the hydraulic fluid from P1 bypass passage is directed to the port B5 through
the check 2.
The return flow from the head side of the bucket cylinder returns to the hydraulic oil tank through
the port A5 and the tank passage.
(2)
#
B5 A5
P1 Bypass passage
P1 Parallel passage
Check 2
Bucket spool
Bucket logic valve
Tank passage
Check 1
From RCV
Pb5
140L2MC35