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Image 1/2: Turn OFF all hydraulic and water pressure to the bleed-down valve. Image 2/2: Loosen the hydraulic hose from the  hydraulic fitting using 7/8" and 3/4" wrench.
  • 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 hydraulic and water pressure to the bleed-down valve.

  • Loosen the hydraulic hose from the hydraulic fitting using 7/8" and 3/4" wrench.

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Image 1/3: Loosen the 1/4" gland nut from the side inlet of the valve body. Image 2/3: Unthread the 1/4" gland nut from the side inlet of the valve body. Image 3/3: Unthread the 1/4" gland nut from the side inlet of the valve body.
  • Unthread the hydraulic hose from the hydraulic fitting.

  • Loosen the 1/4" gland nut from the side inlet of the valve body.

  • Unthread the 1/4" gland nut from the side inlet of the valve body.

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Image 1/3: Loosen the 3/8" high-pressure gland from the outlet adapter using 13/16" and 1" wrench. Image 2/3: Unthread the 3/8" high-pressure gland from the outlet adapter. Image 3/3: Unthread the 3/8" high-pressure gland from the outlet adapter.
  • Clean the 3/8" gland nut of all Blue Goop with isopropyl alcohol.

  • Loosen the 3/8" high-pressure gland from the outlet adapter using 13/16" and 1" wrench.

  • Unthread the 3/8" high-pressure gland from the outlet adapter.

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Image 1/3: Loosen the hydraulic fitting from the adapter fitting using 1-1/4" and 7/8" wrench. Image 2/3: Unthread the hydraulic fitting from the adapter fitting. Image 3/3: Unthread the hydraulic fitting from the adapter fitting.
  • Clean the 3/8" gland nut of all Blue Goop with isopropyl alcohol.

  • Loosen the hydraulic fitting from the adapter fitting using 1-1/4" and 7/8" wrench.

  • Unthread the hydraulic fitting from the adapter fitting.

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Image 1/3: Replace the O-ring on the hydraulic fitting with the O-ring from the kit (smallest O-ring in kit). Image 2/3: Loosen the adapter fitting from the actuator housing using 1-1/4" and 1-1/16" wrench. Image 3/3: Loosen the adapter fitting from the actuator housing using 1-1/4" and 1-1/16" wrench.
  • Apply an O-ring lubricant to the O-ring from the kit for the hydraulic fitting.

  • Replace the O-ring on the hydraulic fitting with the O-ring from the kit (smallest O-ring in kit).

  • Loosen the adapter fitting from the actuator housing using 1-1/4" and 1-1/16" wrench.

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Image 1/3: Apply an O-ring lubricant to the largest O-ring from the kit. Image 2/3: Replace the O-ring on the adapter fitting with the largest O-ring from the kit. Image 3/3: Replace the O-ring on the adapter fitting with the largest O-ring from the kit.
  • Unthread the adapter fitting from the actuator housing.

  • Apply an O-ring lubricant to the largest O-ring from the kit.

  • Replace the O-ring on the adapter fitting with the largest O-ring from the kit.

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Image 1/3: Unthread the actuator housing from the valve body. Image 2/3: Push the piston out of the actuator housing through the oil port using the  included dowel. Image 3/3: Push the piston out of the actuator housing through the oil port using the  included dowel.
  • Loosen the actuator housing from the valve body using 1-1/16" and 7/8" wrench.

  • Unthread the actuator housing from the valve body.

  • Push the piston out of the actuator housing through the oil port using the included dowel.

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Image 1/3: Inspect the piston, if damage is visible, replace. Image 2/3: Apply an O-ring lubricant to the O-ring and back-up ring. Image 3/3: Apply an O-ring lubricant to the O-ring and back-up ring.
  • Discard the O-ring and back-up ring from the piston.

  • Inspect the piston, if damage is visible, replace.

  • Apply an O-ring lubricant to the O-ring and back-up ring.

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Image 1/3: Make sure the concave side of the  back-up ring is towards the O-ring. Image 2/3: Slide the new O-ring (rounded) into the groove of the piston. Image 3/3: Put the piston assembly into the actuator housing and push with the  included dowel.
  • Slide the new back-up ring (flat) into the groove of the piston.

    • Make sure the concave side of the back-up ring is towards the O-ring.

  • Slide the new O-ring (rounded) into the groove of the piston.

  • Put the piston assembly into the actuator housing and push with the included dowel.

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Image 1/3: Unthread the outlet fitting from the bleed down valve body. Image 2/3: Remove the high-pressure seat from the bleed down valve body and discard. Image 3/3: Remove the high-pressure seat from the bleed down valve body and discard.
  • Loosen the outlet fitting from the bleed down valve body using 7/8" and 13/16" wrench.

  • Unthread the outlet fitting from the bleed down valve body.

  • Remove the high-pressure seat from the bleed down valve body and discard.

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Image 1/3: Clean the outlet adapter and the flow reducer of all Blue Goop with isopropyl alcohol. Image 2/3: Loosen the back-up screw from the top of the bleed down valve body using  a 5/16" socket wrench. Image 3/3: Loosen the back-up screw from the top of the bleed down valve body using  a 5/16" socket wrench.
  • Remove theflow reducer from the outlet adapter.

  • Clean the outlet adapter and the flow reducer of all Blue Goop with isopropyl alcohol.

  • Loosen the back-up screw from the top of the bleed down valve body using a 5/16" socket wrench.

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Image 1/3: Clean the seal back-up screw with isopropyl alcohol. Image 2/3: Push the components through the bleed down valve body with the included dowel. Image 3/3: Push the components through the bleed down valve body with the included dowel.
  • Unthread the seal back-up screw from the top of the bleed down valve body.

  • Clean the seal back-up screw with isopropyl alcohol.

  • Push the components through the bleed down valve body with the included dowel.

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Image 1/3: Apply a[http://www.accustream.com/all-products/11447.html|high vacuum grease] to the needle. Image 2/3: Slide the back-up screw on to the needle so the flat end of the needle is flush with the non threaded part of the back-up screw. Image 3/3: Slide the back-up screw on to the needle so the flat end of the needle is flush with the non threaded part of the back-up screw.
  • Clean the bleed down valve body with isopropyl alcohol or a similar cleaning agent.

  • Apply ahigh vacuum grease to the needle.

  • Slide the back-up screw on to the needle so the flat end of the needle is flush with the non threaded part of the back-up screw.

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Image 1/3: Put the hoop onto the high-pressure seal with the tapered end towards the high-pressure seal and opposite from the O-ring. Image 2/3: Put the high-pressure seal assembly onto the point of the needle with the hoop, first. Image 3/3: Put the high-pressure seal assembly onto the point of the needle with the hoop, first.
  • Slide the bushing onto the point of the needle with the chamfered end towards the back-up screw.

  • Put the hoop onto the high-pressure seal with the tapered end towards the high-pressure seal and opposite from the O-ring.

  • Put the high-pressure seal assembly onto the point of the needle with the hoop, first.

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Image 1/3: Apply a high vacuum grease to the  internal threads of the bleed down valve body. Image 2/3: Put the high-pressure needle assembly into the top of the bleed down valve body with the point first. Image 3/3: Put the high-pressure needle assembly into the top of the bleed down valve body with the point first.
  • Apply a high vacuum grease to the exterior of the high-pressure seal, hoop, and bushing.

  • Apply a high vacuum grease to the internal threads of the bleed down valve body.

  • Put the high-pressure needle assembly into the top of the bleed down valve body with the point first.

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Image 1/3: Take the seal back-up screw out of the body and apply a layer of Blue Goop to the threads. Image 2/3: Thread in the back-up screw into the top of the bleed down valve body. Image 3/3: Thread in the back-up screw into the top of the bleed down valve body.
  • Push the seal back-up screw inside of the valve body until it bottoms out.

  • Take the seal back-up screw out of the body and apply a layer of Blue Goop to the threads.

  • Thread in the back-up screw into the top of the bleed down valve body.

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Image 1/3: Put the flow reducer into the hole beneath the seat cavity in the outlet adapter. Image 2/3: Apply a layer of Blue Goop to the external threads and the seat cavity of the outlet adapter. Image 3/3: Apply a layer of Blue Goop to the external threads and the seat cavity of the outlet adapter.
  • Tighten the back-up screw to the top of the bleed down valve body using a 5/16" socket wrench.

  • Put the flow reducer into the hole beneath the seat cavity in the outlet adapter.

  • Apply a layer of Blue Goop to the external threads and the seat cavity of the outlet adapter.

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Image 1/3: Apply a layer of Blue Goop to the top of the poppet seat that is sitting in the outlet adapter. Image 2/3: Thread the outlet adapter into the valve body. Image 3/3: Thread the outlet adapter into the valve body.
  • Put the poppet seat into the seat cavity of the outlet adapter.

  • Apply a layer of Blue Goop to the top of the poppet seat that is sitting in the outlet adapter.

  • Thread the outlet adapter into the valve body.

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Image 1/3: Apply a layer of Blue Goop to the external threads of the valve body. Image 2/3: Thread the actuator housing onto the  valve body. Image 3/3: Thread the actuator housing onto the  valve body.
  • Using a 1" wrench on the outlet adapter and a 7/8" wrench on the valve body, tighten together securely.

  • Apply a layer of Blue Goop to the external threads of the valve body.

  • Thread the actuator housing onto the valve body.

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Image 1/3: Apply Blue Goop to the 3/8" gland nut threads. Image 2/3: Thread the 3/8" gland nut with the high-pressure tubing into the bleed down valve adapter. Image 3/3: Thread the 3/8" gland nut with the high-pressure tubing into the bleed down valve adapter.
  • Tighten the actuator housing to the valve body using a 1-1/16" and 7/8" wrench.

  • Apply Blue Goop to the 3/8" gland nut threads.

  • Thread the 3/8" gland nut with the high-pressure tubing into the bleed down valve adapter.

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Image 1/3: Apply Blue Goop to the 1/4" gland nut threads. Image 2/3: Thread the 1/4" gland nut into the side of the bleed down valve body. Image 3/3: Thread the 1/4" gland nut into the side of the bleed down valve body.
  • Tighten the gland nut into the bleed down valve adapter using 13/16" and 5/8" wrench.

  • Apply Blue Goop to the 1/4" gland nut threads.

  • Thread the 1/4" gland nut into the side of the bleed down valve body.

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Image 1/3: Thread the adapter fitting into the actuator housing. Image 2/3: Tighten the adapter fitting into the  actuator housing using 1-1/4" and 1-1/16" wrench. Image 3/3: Tighten the adapter fitting into the  actuator housing using 1-1/4" and 1-1/16" wrench.
  • Tighten the gland nut to the side of the bleed down valve body using 3/4" and 5/8" wrench

  • Thread the adapter fitting into the actuator housing.

  • Tighten the adapter fitting into the actuator housing using 1-1/4" and 1-1/16" wrench.

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Image 1/3: Tighten the hydraulic fitting into the hydraulic adapter. Image 2/3: Thread the hydraulic hose onto the  hydraulic fitting. Image 3/3: Thread the hydraulic hose onto the  hydraulic fitting.
  • Thread the hydraulic fitting into the hydraulic adapter.

  • Tighten the hydraulic fitting into the hydraulic adapter.

  • Thread the hydraulic hose onto the hydraulic fitting.

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Image 1/2: Turn the pump ON and continue the cutting process. Image 2/2: Turn the pump ON and continue the cutting process.
  • Tighten the hydraulic hose to the hydraulic fitting using 7/8" and 3/4" wrench.

  • Turn the pump ON and continue the cutting process.

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Finish Line

3 other people completed this guide.

Adam Dumas

Member since: 05/20/2013

36 Guides authored

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