How to Repair an AccuStream On/Off Valve Using Kit #11328

Written By: Adam Dumas (and 2 other contributors)
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Difficulty

Moderate

Steps

11

Time Required

00:20:00 - 00:30:00

Sections

1

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

    • Always make sure all high-pressure water has been removed from valve by following 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.

  2. The 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.

    • The 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.

  3. Turn the air to the actuator OFF. Disconnect the air line from the actuator. Loosen the actuator from the valve body using a 7/8" wrench.

    • Turn the air to the actuator OFF.

    • Disconnect the air line from the actuator.

    • Loosen the actuator from the valve body using a 7/8" wrench.

  4. Unthread the actuator from the valve body. Remove all the valve components using the included dowel. Thoroughly clean the interior/exterior of the valve body before replacing the components.

    • Unthread the actuator from the valve body.

    • Remove all the valve components using the included dowel.

    • Thoroughly clean the interior/exterior of the valve body before replacing the components.

  5. Make sure 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 onto the needle point with the smaller stepped side away from the needle point. Slide the high-pressure valve seal onto the needle point with the O-ring away from the needle bearing.

    • Make sure 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 onto the needle point with the smaller stepped side away from the needle point.

    • Slide the high-pressure valve seal onto the needle point with the O-ring away from the needle bearing.

  6. Apply a high-pressure lubricant 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 in the valve body until the needle bearing bottoms out.

    • Apply a high-pressure lubricant 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 in the valve body until the needle bearing bottoms out.

  7. Apply Blue Goop to the top threads of the valve body. Thread the actuator onto the valve body. Tighten the actuator to the valve body using a 7/8" wrench.

    • Apply Blue Goop to the top threads of the valve body.

    • Thread the actuator onto the valve body.

    • Tighten the actuator to the valve body using a 7/8" wrench.

  8. Reconnect the air line to the top of the actuator. Clean the adapter of all Blue Goop with isopropyl alcohol or a similar cleaning agent. Reapply Blue Goop to the top threads and to the top of the adapter.

    • Reconnect the air line to the top of the actuator.

    • Clean the adapter of all Blue Goop with isopropyl alcohol or a similar cleaning agent.

    • Reapply Blue Goop to the top threads and to the top of the adapter.

  9. Put the seat at the top of the adapter with the flat side towards the adapter. Apply Blue Goop to the top of the seat. Turn the air to the actuator ON.

    • Put the seat at the top of the adapter with the flat side towards the adapter.

    • Apply Blue Goop to the top of the seat.

    • Turn the air to the actuator ON.

  10. Thread the adapter into the valve body. Tighten the adapter into the valve body using a 1" and 13/16" wrench. Turn the air to the actuator OFF.

    • Thread the adapter into the valve body.

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

    • Turn the air to the actuator OFF.

  11. Apply water pressure to the valve assembly to verify that 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.

    • Apply water pressure to the valve assembly to verify that 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.

Finish Line

9 other people completed this guide.

Author

with 2 other contributors

Adam Dumas

Member since: 05/20/2013

36 Guides authored

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