Group 4 Main Control Valve - Hyundai HX130LCR Manual

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Table of Contents

GROUP 4 MAIN CONTROL VALVE

1. REMOVAL AND INSTALL OF MOTOR

Lower the work equipment to the ground

and stop the engine.

Operate the control levers and pedals

several times to release the remaining

pressure in the hydraulic piping.

Loosen the breather slowly to release the

pressure inside the hydraulic tank.

Escaping fluid under pressure can

penetrate the skin causing serious injury.

When pipes and hoses are disconnected,

the oil inside the piping will flow out, so

catch it in oil pan.

Remove the wirings for the pressure

sensor and so on.

Remove bolts and disconnect pipe.

Disconnect pilot line hoses.

Disconnect pilot piping.

Sling the control valve assembly and

remove the control valve mounting bolt

and bracket.

·Weight : 80 kg (175 lb)

·Mounting bolt

Tightening torque : 12.2±1.3 kgf.m

Remove the control valve assembly.

When removing the control valve

assembly, check that all the piping have

been disconnected.

Carry out installation in the reverse order

Bleed the air from below items.

Cylinder (Boom, arm, bucket)

Travel motor

See each item removal and install.

Confirm the hydraulic oil level and

recheck the hydraulic oil leak or not.

(88.2±9.4 lbf.ft)