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Image 1/2: Turn OFF all water pressure to the on/off valve. Image 2/2: Turn the on/off valve ON to raise the [http://www.accustream.com/all-products/11562.html|needle] from the [http://www.accustream.com/all-products/11010.html|seat].
  • 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.

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Image 1/3: Loosen the [http://www.accustream.com/all-products/13841.html|adapter] from the valve body using a 1" and 13/16" wrench. Image 2/3: Unthread the adapter from the valve body. Image 3/3: 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.

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Image 1/3: Disconnect the air line from the [http://www.accustream.com/all-products/12828.html|actuator]. Image 2/3: Loosen the actuator from the valve body using a 7/8" wrench. Image 3/3: 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.

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Image 1/3: Remove all the valve components using the included dowel. Image 2/3: Thoroughly clean the interior/exterior of the valve body before replacing the  components. Image 3/3: 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.

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Image 1/3: Slide the [http://www.accustream.com/all-products/12178.html|needle bearing] onto the needle point with the smaller stepped side away from the needle point. Image 2/3: Slide the [http://www.accustream.com/all-products/11043.html|high-pressure valve seal] onto the needle point with the O-ring away from the needle bearing. Image 3/3: Slide the [http://www.accustream.com/all-products/11043.html|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.

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Image 1/3: Put the needle point at the top of the valve body. Image 2/3: Use the dowel to push the needle in the valve body until the needle bearing bottoms out. Image 3/3: 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.

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Image 1/3: Thread the actuator onto the valve body. Image 2/3: Tighten the actuator to the valve body using a 7/8" wrench. Image 3/3: 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.

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Image 1/3: Clean the adapter of all Blue Goop with isopropyl alcohol or a similar cleaning agent. Image 2/3: Reapply Blue Goop to the top threads and to the top of the adapter. Image 3/3: 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.

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Image 1/3: Apply Blue Goop to the top of the seat. Image 2/3: Turn the air to the actuator ON. Image 3/3: 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.

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Image 1/3: Tighten the adapter into the valve body using a 1" and 13/16" wrench. Image 2/3: Turn the air to the actuator OFF. Image 3/3: 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.

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Image 1/3: Quickly cycle the valve on and off a few times to purge the system of all contaminants before installing the cutting head. Image 2/3: Reinstall the cutting head and continue the cutting process. Image 3/3: 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.

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Finish Line

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Adam Dumas

Member since: 05/20/2013

36 Guides authored

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