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Which hose connects to which side of it's stick?

Discussion in 'Construction Equipment Attachments' started by Cartoondude135, Mar 16, 2021.

  1. Cartoondude135

    Cartoondude135 Well-Known Member

    Joined:
    May 7, 2019
    Messages:
    46
    Location:
    Canada
    How do I know which hose connects to which side of the excavator's/backhoe's stick? The hose connectors in this video look the same. The reason I'm asking this is because I compare this to a diamond blade on a cut-off saw spinning in the wrong direction. Diamond blades have a special arrow engraved on them to tell the saw operator which direction the saw blade needs to be spinning. Otherwise, the diamonds in the blade will not be exposed to the material it's cutting and very poor cutting will result. So if I connect the wrong hose to the wrong side, the hammer's/hoe pack's motor will get messed up.

    While I'm on this topic of hoses. Why do some excavator attachments have more than 1 pair of hoses? Such as those 360 degree demolition shears/processors that have up to 6 hoses? It's similar to how Diesel 10 has 4-6 hoses for his claw. What do those other hoses do besides pressure/return? And why do some hammers have what looks like a third hose running towards them? Not all hammers have a third hose.
     
  2. heymccall

    heymccall Senior Member

    Joined:
    Feb 20, 2007
    Messages:
    2,711
    Location:
    White Oak, Pa
    Since it is an 8700C, it should have a 4 way valve .
    Overpressure protection
    Overflow protection
    Reverse flow protection
    Motor shutdown freewheel

    Staring at the nipples in front of you, the nonexistent LH is supply (38-43gpm @ 2300psi) and the nonexistent RH is return to cooler/ tank.
    Since someone removed the $800 valve, the furthest from the carrier (the bottom of the motor) is the supply.
     

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    John C. likes this.
  3. Cartoondude135

    Cartoondude135 Well-Known Member

    Joined:
    May 7, 2019
    Messages:
    46
    Location:
    Canada
    wrong hose wrong side sketch.jpg Maybe I didn't explain this thoroughly enough. Let's take for example this Kent breaker. The right side hose is designed to connect to the right side of the excavator's/backhoe's stick while the left side hose is designed to connect to the left side of the excavator's/backhoe's stick. So if I connect the left side hose on the breaker to the right side of the excavator's/backhoe's stick and vice versa for the other hose, then the attachment's motor's going to get all messed up. That's what I mean when I say "if I connect the wrong hose to the wrong side, then the attachment's motor is going to get all messed up or the attachment cylinder circuit is going to be reversed (left is right and vice versa)". This same thing applies to hoe packs and 360 degree rotating attachments (shears, processors, clamshell buckets, etc.).

    So how do I know which hose connects to which side of the excavator's/backhoe's stick? This is why I compared this to a diamond blade on a hand-held cut-off saw spinning in the wrong direction of the arrow engraved on it's blade. And yes, looking at that Allied Hoe Pack in the video I provided, the hose connectors on that loader connected to the hoe pack look the same.
     
  4. Cartoondude135

    Cartoondude135 Well-Known Member

    Joined:
    May 7, 2019
    Messages:
    46
    Location:
    Canada
    4c4c2c57-d571-4f11-bfa1-1b22a2f6a930.jpg And let's take for example this Stanley hoe pack. The left side port connects the hose to the left side of the backhoe's stick and the right side port connects the hose to the right side of the backhoe's stick. 1254.jpg But with this Genpac hoe pack, now I can't tell which hose connects to which side of the backhoe's/excavator's stick as the hose ports are sitting vertically on top of each other instead of side by side.