7
2480 Remote Intensifier Tooling Alcoa Fastening Systems
EXHAUST
Hydraulic
Piston
Air Piston
Throttle
Valve
Pull
Piston
Pull
Piston
When the trigger is depressed the throttle valve
moves to up position, pressurized air is directed to
the top of the air piston, causing the piston to move
downward. The air below the piston is exhausted
and directed through the center of the throttle
valve and out the bottom of the tool . The air piston
has a rod and a hydraulic piston attached. When
the air piston rod moves downward, a column of
pressurized fluid is forced into the tool, which
moves the pull piston back. The attached nose
assembly moves with the pull piston to start
fastener installation.
When fastener installation is completed, the trigger
is released. Air pressure, with the assistance of an
air valve, causes the throttle valve to return to its
down position. Pressurized air is re-directed to the
bottom of the air piston, causing the piston to move
upward. The air from below the piston is exhausted
through bottom of tool. The rod and hydraulic
piston move upward; hydraulic pressure is
reversed and the pull piston is returned forward.
PULL
RETURN
P
P
RINCIPLE
RINCIPLE
OF
OF
O
O
PERA
PERA
TION
TION
