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Thread: Fuel pump/filter access hole a wee bit too small?

  1. #1
    JohnWC
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    Fuel pump/filter access hole a wee bit too small?

    Has anyone else felt, as I do now, that getting the pump/filter assembly out of the fuel tank on the 1100s is next to impossible? I turn it around, lift it this way and that and it is always catching on something. That something is usually the end of the arm for the fuel level float. I figure if I bend that by accident, the fuel level will forever be off. Could BMW have made the hole any smaller? Another 1/2 inch would be a big help. I took the same units out of a K75 in five minutes. The videos on YouTube show the whole unit just practically falling out of the tank. I don't think so. Any tricks to getting this thing out of the tank without damage?

    All this just to change the fuel filter. I now see why people rig them to be outside the tank.

  2. #2
    Jerry Emhoff
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    As my Grandpa use to say, "you have to hold your mouth right" and then it comes right out. After I changed mine the first time I move it outside with no problems.
    Winter is coming

  3. #3
    #81822 bp@sr9's Avatar
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    1st couple of times, there were several 'walkaways'. now just a pita. b

  4. #4
    Pepperfool GSAddict's Avatar
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    Practice makes perfect.
    It helps to have a foam pad & old towel to lay the tank on so the fear of scratching is minimized.
    '
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  5. #5
    Registered User Gruesome's Avatar
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    Same on the 1150GS (lines just a tad too short), but people (OK, one person) who have done it a lot swear you can pull the assembly out and get at the fuel filter without disconnecting the lines.

  6. #6
    Pepperfool GSAddict's Avatar
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    Quote Originally Posted by Gruesome View Post
    Same on the 1150GS (lines just a tad too short), but people (OK, one person) who have done it a lot swear you can pull the assembly out and get at the fuel filter without disconnecting the lines.
    The float arm assy is easily damaged if forced out. I always remove the vent lines.
    '
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  7. #7
    Quote Originally Posted by jconway607 View Post
    Has anyone else felt, as I do now, that getting the pump/filter assembly out of the fuel tank on the 1100s is next to impossible? ...
    The first time I changed the fuel filter on my 94 R1100RS there were some dark thoughts. It was like getting a 5 gallon bucket out of a 3 gallon hole.
    I eventually got the assembly out and have changed the filter a number of times since. Happily, the first time was the most difficult.

    Better luck is assured if one has on-hand the o-rings for the fuel fill cover and the fuel filter cover. If the internal vent lines are pulled loose it will
    likely be necessary to remove the fill cover - the o-ring may swell and not be able to be re-used. If you have the replacement o-ring handy, fate
    may smile on you and there will be no need to use the spare.

    To replace the fuel filter cover o-ring, I use a dab of grease to hold the o-ring place and use a criss-cross gradual tightening method for the cover screws.

    I know some folks like using the one-time fuel line clamps (called oetiker clamps) which require a special tool to install. I am not among those folks.
    There are special clamps for fuel injection lines that are re-usable (not standard hose clamps). I much prefer the re-usable clamps. YMMV!!!

  8. #8
    Pepperfool GSAddict's Avatar
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    If you have a second set of O rings you can alternate between the 2.
    The swollen ones will shrink back to be usable the next tank service.
    '
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  9. #9
    Registered User
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    You can also put it back together wrong but you have to be a real moron to put everything back together before you figure that out. Don't ask me how I know that.

  10. #10
    Gerard jagarra's Avatar
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    I just went through the process of removing the pump/filter unit a couple of times. Here are a couple of observations. Mark the location of the plate in relation to the tank, couple of big dots with a magic marker on the plate and tank give you the proper location. When I wiggled the plate out I removed the single use vent clamps and replaced them with this style http://www.euromotoelectrics.com/pro...1hoseclamp.htm. I also bought a new filter and sock from these folks,considerable savings from the dealer, sock was a Bosch part, filter Mahle. I put a brass ring on the drain line so I knew which was which when I hooked them up, saves me from blowing into the line to figure this out. I had bought a new O-ring and new vibration pad from dealer, this time the unit wiggled in. Musta been holding my mouth right this time.
    1994 R1100RS-(5/93)-,1974 R90/6 built 9/73,--1964 Triumph T100--1986 Honda XL600R

  11. #11
    JohnWC
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    All good responses. I particularly liked the one about "walkaways". Yes, I did that several times. I found that sort of turning the unit on it's back seemed to help get it out, for anyone who is in the same predicament. I used the same method getting it back in and, of course, it went in a lot easier than it came out. I should have ordered a new "sock filter", as mine had to be sewn closed at the end where they apparently always split apart. I'll live with it. I would like to get a little riding in before the snow falls.

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