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The Air Valve Assembly is located at the top of the Gantry, and controls the plunging of the Head and the plunging of the Blade.

7/64” Allen Wrench
3/32” Allen Wrench

Turn off the air supply and remove the upper hood by removing the one screw that holds it in place.

Locate the Air Valve Assembly at the top left side of the Gantry by standing in front of the Gantry and looking straight through the wires/Air Lines to the back plate of the Gantry. Locate the two Allen Screws holding the Air Valve Assembly in place.

Do not adjust the other two screws on the Air Valve Assembly.

Use a 7/64” Allen wrench T-Handle to remove the screws securing the Air Valve Assembly to the Gantry.

Take note that these screws are tight and may be difficult to remove.
Save the screws.

Before unplugging the power plugs, note the position of each one. The bottom one, closest to the back of the Gantry, has a red plastic marker. The middle plug has a clear/white plastic marker, and the top plug has no marker at all.

Unplug each of them by squeezing gently and pulling them straight out from their housing.

Disconnect the three Air Lines by untwisting the connectors from each other.

Disconnect the Air Lines then remove the old Air Valve Assembly carefully from the Gantry.

Take the screws from the old Air Valve Assembly and place them into the new one.

Line up the screws to the screw holes and screw into the back of the Gantry.

It is easier to screw one screw in partially and then the other to ensure proper alignment, then go back and tighten them.

Plug in the Air Lines.

Matching connector colors.

Match airline colors.

Plug in the Power Plugs. The plug with the red marker gets plugged into the bottom closest to the back of the Gantry.

Plug in the plug with the clear/white marker into the top plug.