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Thread: Fuel Pump O-Ring information

  1. #11
    Senior Member Silverrider's Avatar
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    Quote Originally Posted by AZmidget91 View Post
    You can also get rebuild kits in various stages from Moto Enthusiasts

    http://motoenthusiasts.bigcartel.com...fuel-pump-kits
    Yes, because of the accessibility of the pump, I wanted a slam dunk one time correct thing , yes at a high cost ,
    Last edited by Silverrider; 03-24-2017 at 05:16 PM.

  2. #12
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    Quote Originally Posted by lunaticfringe View Post
    i'm seeing a fair amount of fuel pump issues lately as our beloved buells continue to age gracefully. several on-going discussions on this board as well. the removal/replacement/upgrade/cross-over scenarios have been well covered but there continues to be consistent questions regarding the O-rings. everything you can possibly need to know to source same.
    ALL XB MODEL FUEL PUMP FRAME TO PUMP MOUNTING O-RINGS
    1-factory part # is P0121.02A8 SUPERSEDED by same # with an A as suffix. the A means nothing. just a vendor tracer. both part numbers reference the same identical part. still available in unlimited dealer quantities as of 3-22-2017
    2-available thru many aftermarket suppliers such as OringsandMore.com IMPORTANT: any replacement ABSOLUTELY must be either nitrile or viton or it will leak like hell in short order.
    O-RING SIZE IS: 3 inches ID-------3/16th inches thickness. these are the 2 dimensions you will need to source any aftermarket replacements
    3-OringsandMore.com great source and priced right. their part # is 151V.
    4-i keep O-rings in stock. dealer retail is approx. $6.20 each.....my cost $3 each. if you get stuck PM me and i'll send you some.
    NOTE: each ring must be lightly coated with either recommended silicone O-ring lube or a light grease prior to assembly. and carefully tighten the bolts in sequence as to not crack the pump housing.
    hope this info helps.
    Correct thickness is 3/32" (not 3/16") http://www.badweatherbikers.com/buel...tml?1459726014

    Dash number 151, Viton, 3" ID 3-3/16" OD 3/32" CS, Durometer 75A

    1$ each on Ebay https://www.ebay.com/itm/Viton-Heat-...53.m2749.l2649

  3. #13
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    You also need 2 different sizes o-rings for fuel line banjo fitting - replacement for kit part number P0198.02A8:

    1 o-ring dash number 010, Viton, 1/4" ID x 3/8" OD x 1/16" CS, Durometer 75A - 0.05$ per each vs 3$ from dealer https://www.mcmaster.com/9464k15

    1 o-ring, metric, Viton, 7.1mm ID x 10.3mm OD x 1.6mm CS, Durometer 75A - 0.2$ per each vs 3$ from dealer https://www.mcmaster.com/9263k137

    And 1 o-ring for fuel pump drain plug - replacement for part number P0127.02A8 is o-ring dash number 011, Viton, 5/16" ID x 7/16" OD x 1/16" CS, Durometer 75A - 0.06$ per each vs 2$ per each from dealer https://www.mcmaster.com/9464K16
    Last edited by X B; 12-15-2018 at 08:20 PM.

  4. #14
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    All, Perhaps you might remember my fuel pump grief ( plus a LOT of grief from fellow Buellers) with my 2009 ULY back around Labor day. I decided to replace the entire fuel pump with a new one from Saint Paul HD. It was expensive but seemed cheaper in the long run rather then messing around with O rings, adaptations and ebay who knows what.


    conclusion was to find an in-tank fuel filter that would catch all the junk as the fuel goes into the tank. I think I found the filter but they are all for screw top tanks rather then the Buell style with dogs. Solution is to remove the filler/cap and mount the top of the fuel filter under the cap. I will let you know how that goes.

    Aside from all that, it is wet, rainy and miserable so the next trip is if I go the first bit with the bike in back of the truck down to NorCal-say and bomb around for a few days.

    Opto


    The reason my fuel pump failed is that the internal filters were blocked solid and overworked the pump.

  5. #15
    Senior Member Cooter's Avatar
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    PM coming Opto...

  6. #16
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    Extra filtering is good but I think most of the problems come from the time some of these bikes are not used and the fuel just sits in the tank. I find it hard to believe that in this day and age that there are that much impurities coming out of the gas nozzle.

  7. #17
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    If you are planning to change fuel pump pressure regulator it will likely go with new o-rings. If you are planning to reuse the fuel pump pressure regulator you will need two different sizes o-rings.

    1 pressure regulator small o-ring - dash number 109, Viton, 5/16" ID x 1/2" OD x 3/32" CS, Durometer 75A - 0.1$ per each https://www.mcmaster.com/9464K44

    1 pressure regulator big o-ring - dash number 118, Viton, 7/8" ID x 1 1/16" OD x 3/32" CS, Durometer 75A - 0.2$ per each https://www.mcmaster.com/9464K82

  8. #18
    Senior Member Cooter's Avatar
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    Looks like someone found the McMaster catalog for the first time! How cute.

  9. #19
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    Loco,

    For sure sitting around time is not good for bikes, or bikers for that matter. Lunatics idea of storing with Avgas, or at least unleaded, is a good idea. The black crud in my internal fuel filters had to come from somewhere. I do not know the PO's regimen as far as storing over the winter went. Probably best to attack the problem on all fronts.

    I get pretty remote on some trips and those little funky mountain towns could have iffy gas. Anyway, I am fitting a tank fill filter-- see how it looks in a few months.

    Opto

  10. #20
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    You also need 2 seals for inline fuel pump filter - replacement for part number P0164.K is piece of gasoline resistant petroleum hose 5/16" ID x 9/16" OD x 5/8" long, Buna-N - 0.07$ per each vs 7$ per each from dealer https://www.mcmaster.com/54605K33


    Last edited by X B; 12-14-2018 at 01:48 AM.

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