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Hose clamps

Discussion in 'Griso-Bella Chat & Tech' started by trippo62, Feb 21, 2014.

  1. trippo62

    trippo62 Just got it firing! GT Contributor

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    Ok. I'm stumped. I haven't had to bother with any serious tinkering with my Griso until now. I need to drain my fuel tank to suss the fuel pump. All good til I get to the hose clamps. Having not encountered this type of clamp before I'm reluctant to ham fist it off. Can any of you experts out there offer the method of removing this type of clamp? once removed can it be re-installed or are they disposable? I've attached a pic.

    Thanks guys
     

    Attached Files:

  2. zopilote

    zopilote Just got it firing!

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    I have been using that type of clamp a lot while working with milking robots. You are supposed to use a special type of pliers that you can turn one way to open the clamp and the other way to close it (it is reusable). I think you can open it with a small flat screwdriver, but i am not sure how to close it without the special tool. Maybe you can just replace it with another, more common type of clamp.
     
  3. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    Removing that clamp won't drain the tank. It is on the pressure side of the system. If you run the pump dry you could damage it. Siphon out as much as you can. You will still have some fuel in the tank but since you have to invert the tank to get the pump out it isn't a problem.
     
  4. pyoungbl

    pyoungbl Cruisin' Guzzisti

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    Here's a link to a video that talks about installing and removing similar clamps.

    http://www.eaavideo.org/video.aspx?v=10529461001

    Yours is a stepless design, whereas the one in the video is a two-ear design. It's still made by the same company and uses similar tools. It would seem that you are better served by using the fuel line quick disconnect that is already on the bike. Once you pull the fuel pump you will find the same kind of clamp is securing the fuel filter so the information in the video is going to be useful if you decide to replace that filter. Let's hope you do not have a swollen plastic fuel filter.

    Peter Y.
     
  5. Oz1200Guzzi

    Oz1200Guzzi High Miler

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    These are known at Oetiker clamps (hopefully spelt correctly) and are generally available at any auto parts outlet
     
  6. Lofty1956

    Lofty1956 Tuned and Synch'ed

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    Hi Peter - thanks for that link to the Oetiker clamp - do you have any tips on releasing the QD fitting - I get the impression that it can be quite simple or an absolute PITA and if possible I'd prefer to go the easy way when I check the fuel filter on my 2007 Nevada.
    Cheers

    Lofty
     
  7. kiwi dave

    kiwi dave GT Reference

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    If you do a search on this forum, you find this

    https://www.guzzitech.com/forum/topic? ... %20removal

    Five pages on how to hold your mouth :lol:
     
  8. pyoungbl

    pyoungbl Cruisin' Guzzisti

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    kiwi dave got it right....no matter what I have read, seen, or been told I still cringe when it comes to getting the quick disconnect apart. Last week I took my V7 tank off to replace the fuel filter. It only took a bit of wiggling, one or two harsh words, and a gentle tug to get the QD apart. On the Stelvio I usually use a pick to pluck the parts apart. When I tried to do the same on a Norge I thought I'd go crazy before it all came apart. Whatever you do, be very careful not to break the red spigot that comes out of the fuel pump base.

    Peter Y.
     
  9. Lofty1956

    Lofty1956 Tuned and Synch'ed

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    Thanks Dave and Peter - I'm pleased to report that with your assistance and following the tips in the
    thread you referred me to Dave, I have not only conquered the recalcitrant QD jigger but have removed pump assembly from the tank - just have to get an all metal filter and then - I think it might be like getting toothpaste back into the tube - put it back together - however, if it came out, it will definitely go back in!

    Thanks again

    Lofty
     
  10. pyoungbl

    pyoungbl Cruisin' Guzzisti

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    Lofty, it really helps to use a hair blow dryer to soften up the plastic hoses before you try to jam them onto the metal filter barbs. Be careful not to melt the plastic, just get it a bit softer (and, of course, don't forget you are dealing with gasoline...no flames!).

    Peter Y.
     
  11. Lofty1956

    Lofty1956 Tuned and Synch'ed

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    Thanks again Peter. :)

    cheers

    Lofty
     
  12. trippo62

    trippo62 Just got it firing! GT Contributor

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    Thanks to all for the info.

    Have got my Griso running again. The filter feed had come off in the tank. Something rectified over 6 years ago. Maybe the topic for another thread. This fuel delivery system strikes me as a Friday afternoon design by the Mandello RnD team. Has anyone made it better ?

    cheers
     
  13. GuzziMoto

    GuzziMoto GT Reference GT Contributor

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    The issue with the fuel line Guzzi used to connect the pump to the filter has been covered at length and was the subject of a recall around here. The basic design was fine but the fuel line they used was apparently not suitable for immersion in fuel.
    Mine I put back together with proper fuel line with the correct rating and then used safety wire to tie the sections together so as to prevent future separation.
     
  14. Mackers

    Mackers Cruisin' Guzzisti GT Contributor

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    It's the same system as in my Chief's Ducati GT1000 - and they've had the same problem.
     
  15. GT-Rx®

    GT-Rx® Administrator Staff Member GT di Razza Pura

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    IMO, the only "better" solution would be to take the filter from inside the tank, and move it outside. This minimizes internal failures by just using one rated fuel line and two connections, plus it would allow easier filter changes when needed. This, however, would require some hurdles with the rigid plastic fuel line and quick disconnects. All said, once fixed properly, ~5-6 years is about time for fuel filter replacement anyway. My $.02.
     
  16. cytocycle

    cytocycle Cruisin' Guzzisti

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    Stupid question, I have a leak from the hose to the top left head of the Griso .
    Can this clamp be tightened or does it need to be replaced?
    Can I replace it with a better/different clamp?
    Could I start replacing the factory clamps with http://clamptool.com ? and wiring my own?

    Thanks
    Chris
     

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