Hyundai HX145LCR Manual page 180

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5. BUCKET IN OPERATION

When the right control lever is pulled left, the bucket spool in the main control valve is moved to the

roll in position by the pilot oil pressure from the remote control valve.

The oil from the A2 pump flows into the main control valve and then goes to the large chamber of

bucket cylinder.

At the same time, the oil from the small chamber of bucket cylinder returns to the hydraulic oil tank

through the bucket spool in the main control valve. When this happens, the bucket rolls in.

The excessive pressure in the bucket cylinder head side is prevented by relief valve.

The cavitation which will happen to the head side of the bucket cylinder is also prevented by the

make-up valve in the main control valve.

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