7
Rev. 5/22
GB204/GB204(A) INSTALLATION TOOL
PRINCIPLE OF OPERATION
HYDRAULIC DIAGRAM
When the tool is connected to a powerunit, operation is controlled by an actuator that is connected to the hydraulic hoses. When the
button is depressed, a directional valve in the powerunit directs oil to the front side of the piston forcing it and the nose assembly collet
rearward. This action causes the jaws to clamp on the fastener pintail and pull the sheets together. The anvil is forced over the collar,
swaging it into locking grooves of the fastener. Further force breaks the pintail off, approximately flush with the collar.
When the piston nears the end of its stroke it exposes flats on the back of the unloading valve. These flats "dump" oil back to the
powerunit tank. When the button is released the directional valve reverses oil flow to the back of the piston and pushes the nose
assembly off of the swaged fastener. The spent pintail is released and drops out the back of the tool.
Images may not reflect actual tool
Pressurized Oil
Unpressurized Oil
PULL Cycle
RETURN Cycle
Piston Travel
Piston Travel
Relief
Valve
RETURN Pressure
PULL Pressure
