Hyundai HX140L, Manual

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2-30-1
BUCKET IN OPERATION (TYPE 2)
During the bucket in operation, the pilot secondary pressure from RCV is supplied to port Pa5 of
the spring side and shifts the bucket spool in the left 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 A5 through the check 1.
At the same time, the hydraulic fluid from P1 bypass passage is directed to the port A5 through
the check 2.
Following this it flows into the head side of the bucket cylinder.
The return flow from the rod side of the bucket cylinder returns to the bucket spool through the
port B5. Thereafter it is directed to the hydraulic oil tank through the tank passage.
B5
A5
Tank passage
P1 Bypass passage
From RCV
Check 2
Bucket spool
P1 Parallel passage
Check 1
Pa5
140L2MC134