Takeuchi TB215R Workshop Manual

FUNCTION
CONTROL VALVE
1
3
CONTROL VALVE 3J0AX00
CONTROL VALVE
When the spools are in the neutral position:
When the control valve spools are not moved, the oil
flows through the center bypass passage (1) and the
tank passage T to return to the tank, as shown by the ar-
row.
When the spool is being operated:
The description given here uses an example in which the
spool (2) is moved to the right.
When the spool (2) is moved to the right, the center by-
pass passage (1) is closed and the oil that has flowed
into the valve from the pump passes through the parallel
passage (4), the load check valve (5), and port A into the
actuator.
Meanwhile, oil returning from port B returns to the tank
through the tank passage T.
Load check valve
This valve prevents oil from flowing backward while the
spool switching operation is being performed due to the
load pressure C coming from the actuator port.

Takeuchi TB215R Specifications

General

Brand	Takeuchi
Model	TB215R
Category	Excavators
Language	English