Takeuchi TB53FR, Руководство по ремонту

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MACHINE CONFIGURATION
INTERFERENCE PREVENTION SYSTEM
III-50
TB53FR
When the boom raising is decelerated
When the boom is raised to the boom deceleration
detection position D, the boom switch A is turned off
and the solenoid 3 is turned off. The solenoids 2 and
3 connect the ports A2 and B2 of the solenoid valve,
but part of the oil flows into the tank, functioning as
the pressure reducing valve. This decelerates the
boom raising speed.
When the boom raising is stopped
When the boom is raised up to the boom interference
detection position E, the boom switch B is turned off
and the solenoids 1, 2, and 3 are turned off. At this
time, the solenoid valve operates as the flow control
valve to relieve the shock when the boom stops.
Also, the port B1 and the tank port are connected to
shut off the pilot pressure, and the left offset cannot be
operated.
Boom switch A
Boom switch B
Boom switch C
Offset switch R
Offset switch L
Solenoid 1
Solenoid 2
Solenoid 3 OFF
ON
ON
OFF
OFF
ON
ON
OFF
Boom switch A
Boom switch B
Boom switch C
Offset switch R
Offset switch L Solenoid 1
Solenoid 2
Solenoid 3 OFF
OFF
ON
OFF
OFF
OFF
OFF
OFF
J1C912
ÒONÓ
ÒONÓ
SOL3
A2
B2
B1
A1
L
R
L
R
6
C
NO
SOL1
SOL2
NC
+ -
5
B M H L
1
2
3
C
B
A
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
R
L
L
R
ÒONÓ
ÒONÓ
J1C913
SOL3
A2
B2
B1
A1
L
R
L
R
6
C
NO
SOL1
SOL2
NC
+ -
5
B M H L
1
2
3
C
B
A
ÒONÓ
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
R
L
L
R