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Thread: Oil Filler Cap Problem

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  1. #1
    143439 bobr9's Avatar
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    Oil Filler Cap Problem

    I have a 99 R1100RT with an aftermarket oil filer cap installed by PO. The cap is the metal type requiring an allen wrench for installation/removal. My problem is that when I put it back on the other day after topping off the oil, I tightened it to the point where the whole assembly now just turns (by whole assembly I mean both the cap and the insert liner that it screws into).
    So I am looking for suggestions on how best to get it out. I am thinking it may be best to just pry it up with a screwdriver, but wanted to see if there was a better or less destructive approach. Thanks..

  2. #2
    Benchwrenching PGlaves's Avatar
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    Quote Originally Posted by bobr9 View Post
    I have a 99 R1100RT with an aftermarket oil filer cap installed by PO. The cap is the metal type requiring an allen wrench for installation/removal. My problem is that when I put it back on the other day after topping off the oil, I tightened it to the point where the whole assembly now just turns (by whole assembly I mean both the cap and the insert liner that it screws into).
    So I am looking for suggestions on how best to get it out. I am thinking it may be best to just pry it up with a screwdriver, but wanted to see if there was a better or less destructive approach. Thanks..
    I think there is a better way. What has happened is that the little set screw(s) that hold the outer part are now slipping. On most designs the outer part is hard to see, let alone hold from the outside.

    I think you will have better luck from the inside. Take the valve cover off and see if a screwdriver tip can't jam a bit and hold the ring while you remove the cap.
    Paul Glaves - "Big Bend", Texas U.S.A
    "The greatest challenge to any thinker is stating the problem in a way that will allow a solution." - Bertrand Russell
    http://www.bigbend.net/users/glaves

  3. #3
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    the set screw on that filler housing is accessed from the inside of the valve cover. doubt you'll need anything more special than the corect size allen key. it is smalll, and metric.
    Ride Safe, Ride Lots

  4. #4
    143439 bobr9's Avatar
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    Thanks for both the replies. I think I know what I need to do now.Thanks again...

  5. #5
    143439 bobr9's Avatar
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    Well....I just found out that the cap I have is a Moto-techniques design, and apparently (according to others) the set screws can not be accessed from inside the valve cover. Apparently they are designed such that if they come loose they will not fall into the engine.

    Does not look like there is any room to grab the ring from the outside with channel locks, so whatever I do will have to be done from the outside. Wondering if anyone had a similar experience with this particular cap? Thanks...

  6. #6
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    have you actually looked inside the valve cover?

    i knew from your description that you had the Moto-Technique's cap (as i suspect PG did as well), and what i gave you for directions is exactly what you should be doing. i've had mine for about 8 years now. and have had to remove, re-install & tighten that inner ring several times. you can ONLY access it from the inside.
    ignore the naysayer(s), and just try our recommendations. use some blue loctite on the set screw if you are really worried about it backing out. fwiw-i have not bothered with it.

    Out of curiosity, did those who said "can't do it" expalin exactly how that part is held in the valve cover if not from the inside?
    Ride Safe, Ride Lots

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