3-26
TRAVEL CIRCUIT OPERATION
VB
VA
Ps
DR
MB
MA
LH
MA
MB
Ps
VA
VB
RH
DR
REG
REG
T*
TURNING
JOINT
TO/FROM MAIN CONTROL VALVE
OVERLOAD
RELIEF VALVE
COUNTER
BALANCE VALVE
TRAVEL MOTOR DEVICE
C
A
D
B
Dr
P
Valves are provided on travel motors to offer the following functions.
COUNTER BALANCE VALVE
When stopping the motor of slope descending, this valve to prevent the motor over run.
OVERLOAD RELIEF VALVE
Relief valve limit the circuit pressure below 350 kgf/cm
2
(4980 psi) to prevent high pressure
generated at a time of stopping the machine. Stopping the motor, this valve sucks the oil from lower
pressure passage for preventing the negative pressure and the cavitation of the motor.
1)
2)
140L3HC19A
Содержание HX145 LCR
Страница 11: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Страница 204: ...4 5 MEMORANDUM HYUNDAI HEAVY INDUSTRIES CO LTD CONSTRUCTION EQUIPMENT DIV...
Страница 553: ...8 82 Insert O rings to the relief valve 30 and reassemble them to rear cover 20 This completes assembly 17 32038SM42...
Страница 627: ...8 155 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Страница 636: ...8 164 125LCR8TM61 After assembling spring 44 in order clamp plug 41 Tightening torque 5 kgf m 36 lbf ft 31...
Страница 657: ...8 185 8 185 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...
Страница 668: ...8 196 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...