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Flat face quick connect won't release

Discussion in 'Construction Equipment Attachments' started by katsequipment, Oct 29, 2018.

  1. katsequipment

    katsequipment Member

    Joined:
    Oct 29, 2018
    Messages:
    15
    Location:
    Staten Island, NY
    Hi everyone, any helpful guidance is greatly appreciated. I just installed a new set of flat face quick connects on my hammer going into my cat 262d. I tried disconnecting the female coupler from the machine but for the life of me I can't pull it off. I may have damage the coupler some how. I released pressure in the lines by pushing the fitting in. I hear the oil going back into the machine and the coupler is loose.

    The collar on the coupler is forward. I tried pulling the coupler off. I tried prying it off. I tried hammering it off but for the life of me it won't come off. It's a brand coupler that's either defective or I bent some how.

    Thanks again for any help.
     
  2. Bumpsteer

    Bumpsteer Senior Member

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    Occupation:
    Mechanical designer
    Location:
    Front seat on the Struggle Bus
    Some couplers have a safety lock. You rotate the sleeve after connecting and it won't come off.

    First pic the coupler can be renoved, second is locked.

    Ed

    20181028_215121.jpg
    20181028_215103.jpg
     
    DB2 likes this.
  3. katsequipment

    katsequipment Member

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    Oct 29, 2018
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    Location:
    Staten Island, NY
    It's stuck like the first pic with the ball and notch lined up. I can barely even rotate the sleeve.
     
  4. ianjoub

    ianjoub Senior Member

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    Location:
    Homosassa, FL USA
    A tap with a hammer on the collar has always done it for me. TAP, not hit.
     
  5. Tugger2

    Tugger2 Senior Member

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    British Columbia
    Your not alone.The flat face connectors do exactly the same thing on my 303 Cat. I know how they are suposed to work and they just dont. I usually have to crack the fitting and relieve them. If i used mine a lot id just go to a different style.
     
    dirty4fun likes this.
  6. old-iron-habit

    old-iron-habit Senior Member

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    Retired Cons't. Supt./Hospitals
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    On my New Holland skid steer, I shut the machine off, turn the key back on and operate the control. That relaxes them as there is no pump turning to pressurize them. Not sure if it will work but easy to try. They will not operate with the key off.
     
  7. Jbullfrog

    Jbullfrog Well-Known Member

    Joined:
    Mar 5, 2011
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    85
    Location:
    Avoca, Iowa
    I have a Stanley breaker and use Case style flat face. Sometimes they connect and disconnect fine, other times the take two guys and tapping on the ring. Usually, it's because they have dust or moisture in the section that slides in the female coupler causing it to bind. I try to spray them off with ether before connecting them, or wipe them with a clean rag. I have usually have more problems with my auger drive then my breaker. I swap attachments between the CX50b shown and my 1845C.
     
  8. Canuck Digger

    Canuck Digger Well-Known Member

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    Occupation:
    Business Owner, Equipment Operator, Fishing Guide
    Location:
    Mission, BC, Canada
    May be somewhat relevant, but during storage of the attachment I connect both male/female together and don't disconnect them until I go use them. Keeps them lubricated and clean. I've had the same issue couple of times. Wood block and tap away.
     
  9. RTSmith

    RTSmith Senior Member

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    Occupation:
    Amateur demolition & dirt pusher
    Location:
    Middle Tenn.
    I do to- but do remember to also cycle the park safety switch, or the hydraulic control won't activate. At least on my Cats it works that way.
     
  10. old-iron-habit

    old-iron-habit Senior Member

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    Us New Holland skid steer folks don't know what a park safety switch is.
     
  11. KSSS

    KSSS Senior Member

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    Occupation:
    excavation
    Location:
    Idaho
    The fact that your having that issue with hammer attachment I think is the key. While all the tips mentioned have value, sometimes hammer attachments can, over time damage the carrier couplers just like they beat up the attachment connections. The same damage you see on the attachment (the dimpling caused by the vibration of the couplers) is happening inside as well. If you do a lot of hammering, you have to plan on replacing the couplers on the machine as well. My guess is the couplers on the machine are beat up and need to be replaced as well. I had the same issue on my Taki excavator. I replaced the hammer couplers but still had trouble releasing the couplers. I replaced the couplers on the mini ex and now it works like it should.
     
    Simon C likes this.
  12. DKELONE

    DKELONE Member

    Joined:
    May 2, 2016
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    Location:
    IL
    I had an unremovable female coupler on a cat289d3 equipped with a grapple. Found no workable technique to remove it so I cut the outer slide ring twice 180 degrees apart approx 1/8” deep. I pried apart the two cut pieces with a flat bladed screw driver. Coupler was then easily removed. There was no damage to the male portion.
     
  13. dirty4fun

    dirty4fun Senior Member

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    Location:
    N. IL
    To couple I quite often have to crack the fitting loose, so that I can get them to connect. Usually they come apart pretty easily, thou do use a screwdriver to push the lock ring back sometimes.
     
  14. catman13

    catman13 Senior Member

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    Aug 22, 2011
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    Occupation:
    refrigeration engineer/excavation contractor
    Location:
    oregon usa
    taking apart is usually easy but going together i find most of the problem so crack the line