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2-71
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.
③
VB
VA
VB
VA
MB
MA
MB
MA
DR
DR
125LCR2TM31
Содержание HX130 LCR
Страница 11: ...1 1 SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10 ...
Страница 174: ...4 5 MEMORANDUM HYUNDAI HEAVY INDUSTRIES CO LTD CONSTRUCTION EQUIPMENT DIV ...
Страница 218: ...4 49 4 49 No of pin Receptacle connector female Plug connector male 14 1 7 6 14 MG610406 KET SDL CONNECTOR 13 ...
Страница 517: ...8 89 Insert O rings to the relief valve 30 and reassemble them to rear cover 20 This completes assembly 17 32038SM42 ...
Страница 536: ...8 108 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29 ...
Страница 545: ...8 117 125LCR8TM61 After assembling spring 44 in order clamp plug 41 Tightening torque 5 5 0 5 kgf m 39 8 3 6 lbf ft 31 ...
Страница 566: ...8 138 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10 ...
Страница 577: ...8 149 14 15 3 Install cover 3 to body 1 and tighten bolts 14 Torque 10 12 5 kgf m 72 3 90 4 lbf ft 7 21078DA10 ...
Страница 609: ...8 181 1 STRUCTURE GROUP 11 WORK EQUIPMENT SECTION C SECTION B SECTION A 130ZF8DA44 SECTION A SECTION B SECTION C ...