7
REV. 6/22
GB786/204 INSTALLATION TOOL
PRINCIPLE OF OPERATIONS
When the actuator is depressed, the throttle valve is shifted, directing the pressurized air inside the tool to the bottom of the air
piston assembly, moving it in an upward direction. The air above the air piston assembly is then directed out the exhaust, on
the bottom of the tool. Simultaneously, the piston rod assembly connected to the air piston assembly is also moving up, forci ng
hydraulic oil up and into the front of the head cylinder, causing the piston assembly to move to the rear of the head cylinde r.
The oil from the rear of the head cylinder is directed to the bottom of the piston rod assembly, inside the handle assembly. The
internal components of the attached nose assembly are also moving with the piston assembly to start the fastener installation. When
the fastener installation is completed the actuator is released allowing spring pressure to move the throttle valve to shift,
directing the air pressure to the top side of the air piston assembly and reversing the sequence.
Pressurized Oil
Unpressurized Oil
Pressurized Air
Unpressurized Air
Images may not reflect actual tool
Piston Travel
PULL Cycle
RETURN Cycle
Piston Travel
Side View
of
Actuator
Air exhaust
Air exhaust
Piston Rod Assembly
moves down
Air Piston
moves down
Air Piston
moves up
Piston Rod Assembly
moves up
Air exhaust
