Takeuchi TB53FR - Page 98

MACHINE CONFIGURATION
INTERFERENCE PREVENTION SYSTEM
III-46TB53FR
When the boom is in the small slewing state
When the boom is raised in the right offset state that
will not cause interference between the bucket and the
cab, the interference prevention system will not oper-
ate, and the boom is raised to the top position at a
normal speed.
When the boom is in the right offset state
The boom switches A, B, and C are turned off; the
offset switches R and L are turned on; and the sole-
noids 1, 2, and 3 of the solenoid valve are turned on.
The solenoid 1 connects the port A1 and port B1 of the
solenoid valve to supply the pilot pressure to the offset
section (6) of the control valve. This enables opera-
tion of the right and left offsets. The solenoids 2 and
3 connect the ports A2 and B2 to supply the pilot
pressure to the boom section (5) of the control valve.
This will raise the boom to the top position at a normal
speed.
Boom switch A
Boom switch B
Boom switch C
Offset switch R
Offset switch L
Solenoid 1
Solenoid 2
Solenoid 3
OFF
OFF
OFF
ON
ON
ON
ON
ON
L2C903
J1C904
ÒONÓ
ÒONÓ
ÒONÓ
SOL3
A2
B2
B1
A1
L
R
L
R
6
C
NO
SOL1
SOL2
NC
+
-
5
BMHL
1
2
3
C
B
A
ÒOFFÓ
ÒOFFÓ
ÒOFFÓ
R
ÒONÓ
ÒONÓ
L
L
R