V1.0
3/8 in. Butterfly Air Impact Wrench
8843468
Visit www.princessauto.com for more information
9
OPERATION
1.
Disconnect the air supply.
2.
Snap the socket or accessory over the retaining ring nested in the
square drive anvil (A).
3.
Reconnect the air supply.
4.
Set the anvil’s rotational speed by
turning the air regulator dial (D) (Fig. 1).
The dial’s numbers from 1 to 8 indicate
range from lowest to highest speed.
Turn the dial to 8 for maximum power.
5.
Place the socket over the fastener, grip
the impact wrench firmly with both
hands and gently push down on the
Forward/Reverse Trigger Switch (C).
5.1 Push on the right side of the trigger to tighten and the left side to
loosen a bolt or nut.
5.2 If the tool stalls while tightening, do not raise the output pressure
of the air compressor above 90 PSI. Pressure above 90 PSI will
strip the workpiece and damage the tool, potentially causing tool
failure and serious injury. Use other appropriate methods and
tools to tighten the nut.
6. This tool will stop operation/rotation a few seconds after the trigger is
released.
7.
When the fastener is tightened, release the trigger and remove the tool
and socket.
8. Use a mechanical torque wrench to check the fastener torque.
9.
When finished with the tool, turn off the air compressor, disconnect
the air hose and discharge any residual air remaining in the tool. Put
the impact wrench away in a safe storage area.
PRESSURE DROP
Apply the air consumption and pressure rate numbers to the tool’s air inlet,
not the compressor’s outlet. Calculate the pressure drop for your air supply
set-up and increase the compressor outlet pressure to compensate. Make
sure you do not exceed the maximum pressure for any part of your air
supply system.
Installing a pressure gauge at the tool inlet is the best way to measure the
air pressure and adjust the compressor’s output.
Fig. 1
