Hyundai HX130LCR Manual page 115

Hide thumbs Also See for HX130LCR:

Table of Contents

Stopping operation

Returning the control valve to neutral position while running the motor, the oil supply is cut off

and VA and VB ports are connected to the tank line. Then the pressure of the pilot chamber

located on both spool ends become equal, and the spool (31) returns to the neutral position by

spring (33) force. Thus, the passage from MA to VA is closed.

Owing to the inertia force of the load, the hydraulic motor tends to continue the rotation. Here,

the motor functions as a pump and forwards the oil to MB port but the passage is blocked and

MB port pressure increases. Then the relief valve opens to relieve the pressure and rotational

speed decelerates and at last the motor stops.

Negative brake release pressure is gradually lowered due to the restrictor and finally the brake

works and the motor is mechanically stopped.

Troubleshooting