7
REV. 12/17
GB585 / GB585A INTALLATION TOOL
When the tool is connected to a powerunit, operation is controlled by an electric actuator switch (GB585) or a piloted air actuator
assy (GB585A) in the handle assy (480127). When the switch/actuator assy is depressed, a directional valve in the powerunit directs
oil to the front side of the piston (585124) forcing it and the nose assembly collet rearward. This action causes the jaws to clamp onto
the fastener pintail and pull the sheets together. The anvil is forced forward, swaging the collar into locking grooves of the fastener.
Further force breaks the pintail off, approximately flush with the collar.
When the switch/actuator assy is released the directional valve reverses oil flow to the back of the piston assy and pushes the nose as-
sembly off of the swaged fastener. The pintail ejector hydraulically pushes the spent pintail out of the nose assembly.
PRINCIPLE OF OPERATION
PULL Cycle
RETURN Cycle
HYDRAULIC DIAGRAM
Images may not reflect actual tool
Pressurized Oil
Return Oil
PULL Pressure
RETURN Pressure
PULL Pressure
Pintail
Ejector
Actuator
Relief
Valve
Piston Travel
Piston Travel
Pintail
Ejector
Relief
Valve
RETURN Pressure
Actuator