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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 a 7/8" and 3/4" wrench.
  • Always make sure that 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 a 7/8" and 3/4" wrench.

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Image 1/3: Loosen the gland nut on the high-pressure tubing at the high-pressure inlet port of the bleed-down valve using a 13/16" and 5/8" wrench. Image 2/3: Unthread the gland nut from the outlet fitting at the high-pressure inlet port of the bleed-down valve. Image 3/3: Unthread the gland nut from the outlet fitting at the high-pressure inlet port of the bleed-down valve.
  • Unthread the hydraulic hose from the hydraulic fitting.

  • Loosen the gland nut on the high-pressure tubing at the high-pressure inlet port of the bleed-down valve using a 13/16" and 5/8" wrench.

  • Unthread the gland nut from the outlet fitting at the high-pressure inlet port of the bleed-down valve.

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Image 1/3: Loosen the gland nut from the outlet fitting (connected to the valve body) using a 13/16" and 5/8" wrench. Image 2/3: Unthread the gland nut from the outlet fitting (connected to the valve body). Image 3/3: Unthread the gland nut from the outlet fitting (connected to the valve body).
  • Clean the gland nut of all Blue Goop with isopropyl alcohol or a similar cleaning agent.

  • Loosen the gland nut from the outlet fitting (connected to the valve body) using a 13/16" and 5/8" wrench.

  • Unthread the gland nut from the outlet fitting (connected to the valve body).

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Image 1/3: Loosen the hydraulic fitting from the adapter fitting using a 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 gland nut of all the Blue Goop.

  • Loosen the hydraulic fitting from the adapter fitting using a 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 around the hydraulic fitting with the O-ring from the kit (the smallest O-ring from the kit). Image 2/3: Loosen the adapter fitting from the actuator housing using a 1-1/4" and 1-1/16" wrench. Image 3/3: Loosen the adapter fitting from the actuator housing using a 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 around the hydraulic fitting with the O-ring from the kit (the smallest O-ring from the kit).

  • Loosen the adapter fitting from the actuator housing using a 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 [http://www.accustream.com/all-products/11778.html|piston] out of the actuator housing through the oil port using the included dowel. Image 3/3: Push the [http://www.accustream.com/all-products/11778.html|piston] out of the actuator housing through the oil port using the included dowel.
  • Loosen the actuator housing from the valve body using a 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 cover all of the O-ring and the back-up ring. Image 3/3: Apply an O-ring lubricant to cover all of the O-ring and the back-up ring.
  • Discard the O-ring and the back-up ring from the piston.

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

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

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

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

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

  • Put the piston assembly into the actuator housing the the groove side first and push the piston with the included dowel until the piston bottoms out.

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Image 1/3: Unthread the 3/8" to 1/4" adapter from the outlet fitting. Image 2/3: Loosen the outlet fitting from the bleed down valve body using a 7/8" and 13/16" wrench. Image 3/3: Loosen the outlet fitting from the bleed down valve body using a 7/8" and 13/16" wrench.
  • Loosen the 3/8" to 1/4" adapter from the outlet fitting using a 7/8" and 13/16" wrench.

  • Unthread the 3/8" to 1/4" adapter from the outlet fitting.

  • Loosen the outlet fitting from the bleed down valve body using a 7/8" and 13/16" wrench.

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Image 1/3: Remove the [http://www.accustream.com/all-products/11325.html|high-pressure seat] from the bleed down valve body. Image 2/3: Remove the [http://www.accustream.com/all-products/11743.html|flow reducer] from the outlet adapter. Image 3/3: Remove the [http://www.accustream.com/all-products/11743.html|flow reducer] from the outlet adapter.
  • Unthread the outlet fitting from the bleed down valve body.

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

  • Remove the flow reducer from the outlet adapter.

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Image 1/3: Clean the high-pressure seat of all the Blue Goop. Image 2/3: With the bleed down valve tool push through the bleed-down valve body to remove all components. Image 3/3: The oil seal can also be removed by the bleed down valve tool.
  • Clean the outlet adapter of all the Blue Goop.

  • Clean the high-pressure seat of all the Blue Goop.

  • With the bleed down valve tool push through the bleed-down valve body to remove all components.

    • The oil seal can also be removed by the bleed down valve tool.

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Image 1/3: Visually inspect the top/bottom of the valve body, if excessive wear or cracks are visible, replace the [http://www.accustream.com/all-products/11594.html|valve body]. Image 2/3: Put the [http://www.accustream.com/all-products/11321.html|high-pressure seal] on to the bleed-down valve tool with the O-ring towards the bleed down valve tool. Image 3/3: Put the [http://www.accustream.com/all-products/11321.html|high-pressure seal] on to the bleed-down valve tool with the O-ring towards the bleed down valve tool.
  • Thoroughly clean the valve body before replacing the components.

  • Visually inspect the top/bottom of the valve body, if excessive wear or cracks are visible, replace the valve body.

  • Put the high-pressure seal on to the bleed-down valve tool with the O-ring towards the bleed down valve tool.

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Image 1/3: Slide the [http://www.accustream.com/all-products/11324.html|bushing] on the bleed-down valve tool with the chamfer side away from the hoop. Image 2/3: Apply a [http://www.accustream.com/all-products/11447.html|high-pressure lubricant] to the high-pressure seal, hoop, and bushing. Image 3/3: The O-ring on the high-pressure seal can pinch or strip when installing into the valve body.
  • Slide the hoop, with the sharp edge first, on to the bleed-down valve tool behind the high-pressure seal.

  • Slide the bushing on the bleed-down valve tool with the chamfer side away from the hoop.

  • Apply a high-pressure lubricant to the high-pressure seal, hoop, and bushing.

    • The O-ring on the high-pressure seal can pinch or strip when installing into the valve body.

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Image 1/3: Be aware that the inner diameter of the valve body has a small step, it can pinch or strip the O-ring from the high-pressure seal during installation. Image 2/3: Apply a high-pressure lubricant to the stem. Image 3/3: Replace the [http://www.accustream.com/all-products/11359.html|oil seal], place on the top of the valve body.
  • Put the bleed-down valve tool with the parts into the bottom of the valve body until the tool reaches the bottom of the valve.

    • Be aware that the inner diameter of the valve body has a small step, it can pinch or strip the O-ring from the high-pressure seal during installation.

  • Apply a high-pressure lubricant to the stem.

  • Replace the oil seal, place on the top of the valve body.

    • Put the concave (rubber) side down towards the valve body.

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Image 1/3: Apply Blue Goop to all surfaces of the high-pressure seat. Image 2/3: Put the high-pressure seat at the bottom of the bleed-down valve body with the pointed end out. Image 3/3: Put the high-pressure seat at the bottom of the bleed-down valve body with the pointed end out.
  • Put the stem through the high-pressure seal until it is flush with the oil seal.

  • Apply Blue Goop to all surfaces of the high-pressure seat.

  • Put the high-pressure seat at the bottom of the bleed-down valve body with the pointed end out.

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Image 1/3: Put the flow reducer 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.
  • Apply Blue Goop to the outlet adapter threads.

  • Put the flow reducer in the outlet adapter.

  • Thread the outlet adapter into the valve body.

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Image 1/3: Thread the 3/8" to 1/4" adapter to the outlet adapter. Image 2/3: Tighten the 3/8" to 1/4" adapter to the  outlet adapter using a 7/8" and 13/16" wrench. Image 3/3: Tighten the 3/8" to 1/4" adapter to the  outlet adapter using a 7/8" and 13/16" wrench.
  • Tighten the outlet adapter to the valve body using a 7/8" and 13/16" wrench.

  • Thread the 3/8" to 1/4" adapter to the outlet adapter.

  • Tighten the 3/8" to 1/4" adapter to the outlet adapter using a 7/8" and 13/16" wrench.

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Image 1/3: With the piston assembly installed, thread the actuator housing onto the valve body. Image 2/3: Tighten the actuator housing to the  valve body using 1-1/16" and 7/8" wrench. Image 3/3: Tighten the actuator housing to the  valve body using 1-1/16" and 7/8" wrench.
  • Apply Blue Goop to the top threads of the valve body.

  • With the piston assembly installed, thread the actuator housing onto the valve body.

  • Tighten the actuator housing to the valve body using 1-1/16" and 7/8" wrench.

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Image 1/3: Tighten the adapter fitting into the actuator housing using 1-1/4" and 1-1/16" wrench Image 2/3: Thread the hydraulic adapter into the adapter fitting. Image 3/3: Thread the hydraulic adapter into the adapter fitting.
  • 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

  • Thread the hydraulic adapter into the adapter fitting.

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Image 1/3: Apply Blue Goop to the threads of the gland nut. Image 2/3: Thread the gland nut into the outlet fitting (connected to the valve body). Image 3/3: Thread the gland nut into the outlet fitting (connected to the valve body).
  • Tighten the hydraulic fitting into the adapter fitting using 1-1/4" and 7/8" wrench.

  • Apply Blue Goop to the threads of the gland nut.

  • Thread the gland nut into the outlet fitting (connected to the valve body).

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Image 1/3: Apply Blue Goop to the gland nut threads. Image 2/3: Thread the gland nut into the outlet fitting (connected to the collar). Image 3/3: Thread the gland nut into the outlet fitting (connected to the collar).
  • Tighten the gland nut to the outlet fitting (connected to the valve body) using 13/16" and 5/8" wrench.

  • Apply Blue Goop to the gland nut threads.

  • Thread the gland nut into the outlet fitting (connected to the collar).

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Image 1/3: Thread the hydraulic hose on to the hydraulic fitting. Image 2/3: Tighten the hydraulic hose to the hydraulic fitting using a 7/8" and 3/4" wrench. Image 3/3: Tighten the hydraulic hose to the hydraulic fitting using a 7/8" and 3/4" wrench.
  • Tighten the gland nut into the outlet fitting (connected to the collar) using a 13/16" and 5/8" wrench.

  • Thread the hydraulic hose on to the hydraulic fitting.

  • Tighten the hydraulic hose to the hydraulic fitting using a 7/8" and 3/4" wrench.

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Image 1/1:
  • Turn the pump ON and continue the cutting process.

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Finish Line

Adam Dumas

Member since: 05/20/2013

36 Guides authored

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