7
Rev. 4/23
GB703SR8V INSTALLATION TOOL.
When the lever assembly is depressed, the pressurized air inside of the tool is released allowing spring pressure to move the valve
spool assembly causing the air to be redirected. The air is directed to the top of the air piston assembly, moving it in a downward direction.
The air below the air piston assembly is then directed through the valve sleeve and exhausted out of the bottom of the tool. Simultaneously,
the piston rod assembly connected to the air piston assembly is also moving down, forcing hydraulic oil up and into the front side of the
head cylinder, causing the piston to move to the rear of the head cylinder. 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 lever assembly is released.
Air pressure is then built up inside of the handle assembly causing the valve spool assembly to return to its original position and
reversing the sequence redirecting the oil to the rear of the head cylinder, causing the piston to move to the forward position.
PRINCIPLE OF OPERATION
Images may not reflect actual tool
PULL Cycle
RETURN Cycle
Pressurized Oil
Unpressurized Oil
Pressurized Air
Unpressurized Air
Air Piston
moves up
Air Piston
moves down
Piston Rod Assembly
moves up
Piston Rod Assembly
moves down
Air exhaust
Air exhaust when lever
assembly depressed
Air exhaust
