How to Repair a JetEdge Style On/Off Valve (Old Style) Using Kit #11369

Always make sure all high-pressure water has been removed from the valve by following the machine manufacturers' safety instructions. Failure to do so can cause severe injury or death.

Turn OFF all water pressure to the on/off valve.

Turn the on/off valve ON to raise the needle from the seat.

Components can be replaced with the valve body in the mounting collar.

Loosen the adapter from the valve body using a 1" and 13/16" wrench.

Unthread the adapter from the valve body.

For similar disassembly see Step 3 kit #11328 (parts/tools may vary)

Remove all the valve components using the included dowel.

Thoroughly clean the interior/exterior of the valve body with isopropyl alcohol before replacing the components.

Inspect the top and bottom of the bore for cracks/blemishes. If excessive wear or cracks are visible, replace the valve body.

Slide the needle bearing with the smaller stepped side onto the needle point first.

Slide the high-pressure valve seal onto the needle point.

Apply high vacuum grease to the outside diameter of the high pressure valve seal.

Put the needle point at the top of the valve body.

Use the dowel to push the needle into the valve body until the needle bearing bottoms out.

For similar assembly see Step 7 Kit #13683 (parts/tools may vary)

Clean the adapter of all Blue Goop with isopropyl alcohol.

Reapple Blue Goop to the threads and to the top of the adapter.

Put seat into the adapter with flat the side towards the adapter.

Apply Blue Goop to the top of the seat.

Turn the air to the actuator ON.

Thread the adapter into the valve body.

Tighten adapter into valve body using a 1" and 13/16" wrench.

Turn the air to the actuator OFF.

Apply water pressure to the valve assembly to verify there are no leaks.

Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing the cutting head.

Reinstall the cutting head and continue the cutting process.