7
REV 6/22
GB731OSSH INSTALLATION TOOL
Images may not reflect actual tool
PRINCIPLE OF OPERATION
Pressurized Oil
Unpressurized Oil
Pressurized Air
Unpressurized Air
Air exhaust
PULL Cycle
RETURN Cycle
Piston Travel
Piston Travel
Air Piston
moves down
Piston Rod Assembly
moves down
Air Piston
moves up
Piston Rod Assembly
moves up
When the actuator 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 assembly, causing the piston to move to the rear of the head cylinder assembly. 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 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 directing air pressure to the rear of the head cylinder assembly,
causing the piston to move to the forward position.
Air exhaust
Air exhaust
