7
9/17
GB751SH
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5 INSTALLATION TOOL
When the actuator lever ass’y is depressed, the pressurized air inside of the tool is released allowing spring pressure to move the
valve spool ass’y causing the air to be redirected. The air is directed to the top of the air piston ass’y, moving it in a downward
direction. The air below the air piston ass’y is then directed through the valve sleeve and exhausted out of the bottom of the tool.
Simultaneously, the piston rod ass’y connected to the air piston ass’y is also moving down, forcing hydraulic oil up and into the front
side of the head cylinder ass’y, causing the piston to move to the rear of the head cylinder ass’y. The internal components of the
attached nose assembly are also moving with the piston to start the fastener installation. When the fastener installation is completed,
the actuator lever ass’y is released. Air pressure is then built up inside of the handle causing the valve spool ass’y to return to its
original position and reversing the sequence directing air pressure to the rear of the head cylinder ass’y, causing the piston to move
to the forward position.
PRINCIPLE OF OPERATION
Pressurized Oil
Return Oil
Pressurized Air
Unpressurized Air
Air exhaust
Air exhaust
Image may not reflect actual tool
PULL Cycle
RETURN Cycle
Piston Travel
Piston Travel
Air Piston
moves down
Piston Rod Assy
moves down
Air Piston
moves up
Piston Rod Assy
moves up
Air exhaust
