Gage Bilt GB745 Manuel de l'utilisateur - Page 4
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PRINCIPLE OF OPERATION
When the air actuator assy is depressed, the pressurized air inside the tool is released allowing spring
pressure to move the valve spool assy, causing the air to be redirected. The air is directed to the top side of
the air piston assy, moving it in a downward direction. The air below the air piston assy is then directed
through the valve sleeve and exhausted out of the bottom of tool. Simultaneously, the piston rod assy
connected to the air piston assy 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 oil from the rear of the head
cylinder is directed to the top of the piston rod assy inside the power cylinder. The internal components of the
attached nose assy are also moving with the piston to start the fastener installation. When the fastener
installation is completed, the air actuator assy is released. Air pressure is then built up inside of the handle
assy causing the valve spool assy to return to its original position and reversing the sequence.
OIL
OIL
CYLINDER
PRESSURE
PRESSURE
HEAD
HEAD
PISTON
OIL
PRESSURE
PISTON
ROD
OIL
PRESSURE
AIR
PRESSURE
AIR
AIR
PRESSURE
PRESSURE
AIR
AIR
PISTON
PISTON
VALVE
SPOOL
AIR
PRESSURE
AIR
PRESSURE
REAR POSITION
FORWARD POSITION
EXHAUST
Image may not reflect actual tool
GB7045
Rev. 9/14
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