Hyundai HX130LCR Manual page 166

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9. COMBINED BOOM UP AND BUCKET OPERATION

When the boom up and bucket functions are operated simultaneously, each spool in the main

control valve is moved to the functional position by the pilot oil pressure from the remote control

The oil from the A1 pump flows into the boom cylinders through the boom 2 spool in the left control

valve. The oil from the A2 pump flows into the boom cylinders and bucket cylinder through the boom

1 spool, bucket spool and the parallel and confluence oil passage in the right control valve.

Also, when the boom up and bucket in functions are operated simultaneously, the boom up

operation preference function is operated by the pilot pressure P04 and then the bucket spool

transfers in the half stroke not full stroke (refer to page 2-33). Therefore, the most of pressurized oil

flows into boom 1 spool than the bucket spool to make the boom up operation more preferential.

The boom and bucket are operated.

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