S0707365
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Travel Motor (With Gearbox) (A6V160HD)
B.
When Stopping by Deceleration.
If the pressure oil supplied by the port A is cut off during drive. there will be no hydraulic force.
Then, the spool (126) returns to the right (neutral position) through the stopper (125) by the
spring (128).
The hydraulic oil in chamber b goes through passage a into port A, and back pressure, which is
generated by throttling of passage a controls the return speed of spool (126).
At the same time, the hydraulic motor rotates by inertia force even without the pressure oil.
So the return oil from port D returns to port B through a gap between the spool hole and the rear
flange.
If the spool returns to the neutral position, hydraulic motor stops because all passages are
closed completely.
Like this, the spool’s returning speed controls the return oil from motor gradually according to
the spool’s shape, and stops the hydraulic motor.
As the hydraulic motor rotates because of inertia force, it tries to absorb the hydraulic oil. But
hydraulic oil cannot be supplied because the oil is blocked. So the hydraulic motor will be
damaged by cavitation. But, at the same time, the pressure at port D rises because the return
oil from the hydraulic motor is closed.
By this pressure, the spool (137) slides to the left, the ports D, C are connected. And, by this,
cavitation and pressure rising is prevented.
(Function of the surge cut valve and anti-cavitation valve)
The valve (127) is operated by a little secondary pressure, opens the oil passage between the
port A and the motor suction part, and it prevents the hydraulic motor from cavitation.
Figure 4
Содержание Solar 420LC-V
Страница 1: ...Return to Master Table of Contents 1HYDRAULICS...
Страница 31: ...Page 30 Hydraulic System Troubleshooting Testing and Adjustment Return to Master Table of Contents...
Страница 33: ...S0703010K Page 2 Accumulator TABLE OF CONTENTS General Description 3 Specifications 4...
Страница 43: ...S0704090K Page 8 Center Joint Swivel...
Страница 63: ...S0705000 Page 20 Cylinders Return to Master Table of Contents...
Страница 70: ...S0707260 Page 7 Swing Motor...
Страница 74: ...S0707260 Page 11 Swing Motor SPECIAL TOOLS Figure 5...
Страница 91: ...S0707260 Page 28 Swing Motor...
Страница 103: ...S0707365 Page 12 Travel Motor With Gearbox A6V160HD PARTS LIST Travel Motor Figure 12 HTS6331...
Страница 105: ...S0707365 Page 14 Travel Motor With Gearbox A6V160HD Travel Motor Rotary Group Figure 13 HTS6321...
Страница 107: ...S0707365 Page 16 Travel Motor With Gearbox A6V160HD Travel Motor Control HTS6331 Figure 14...
Страница 109: ...S0707365 Page 18 Travel Motor With Gearbox A6V160HD Travel Motor Speed Reduction Gearbox Assembly 3033 Figure 15...
Страница 114: ...S0707365 Page 23 Travel Motor With Gearbox A6V160HD TRAVEL MOTOR DISASSEMBLY SECTIONAL VIEW HTS063S Figure 16...
Страница 136: ...S0707365 Page 45 Travel Motor With Gearbox A6V160HD 29 Remove gasket Figure 91 Figure 91 3061...