Takeuchi TB215R Workshop Manual

FUNCTION
CONTROL VALVE
7
3
CONTROL VALVE 3J0AX00
Arm In regeneration
The speed at which the arm cylinder is extended (Arm In
operation speed) can be increased by directing part of
the oil returned from the arm cylinder to the supply side
again to increase the supply flow.
When the Arm In operation is performed, the pilot pres-
sure is directed to the port PiA, which causes the spool
(1) to be pushed up. This results in the oil from the pump
being supplied to the head side of the arm cylinder
through the port A.
Meanwhile, the return oil from the rod side of the arm cyl-
inder flows from the port B through the spool head and
the tank passage to be returned to the tank. At the same
time, it pushes the regenerative poppet (2) downward,
allowing it to be joined with the flow from the pump. This
combined flow is then supplied back to the head side of
the arm cylinder again via the port A.

Takeuchi TB215R Specifications

General

Brand	Takeuchi
Model	TB215R
Category	Excavators
Language	English