needle bearing in oil pan

Discussion in 'Airheads' started by tbounds, Mar 31, 2012.

  1. tbounds

    tbounds Adventurer

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    I just found a needle bearing in my oil pan of 95 R100gspd. I removed it to change gasket and while cleaning pan found what looks like a needle bearing and some plastice blue looking material the blue material was half circle what looks like would be a2 inch diameter ring. Any ideas of what it may be from and what to do? Did not have any problem with bike before i started.:ear
    #1
  2. Renner

    Renner rockin' the toaster

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    pics? approximate dimensions of needle bearing?

    sounds like valve rocker bearing R&R time, except for the blue stuff
    #2
  3. 100RT

    100RT Been here awhile

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    Maybe look at your rocker arms for broken rocker shaft spacers and missing needles...? The bearing cages have been know to wear thru or crack on the end.
    #3
  4. supershaft

    supershaft because I can

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    The needle bearing is most likely from a rocker arm bearing. Pull the rocker arms and replace the broken bearing. Sometimes the broken bearing muffs the shaft. With a rocker and shaft in your hand, rotate the other rocker arms on the shafts and feel for notched bearings somewhat like steering heads get only different. If they are notched, replace them. I try to wait and replace them all during a valve job but . . . . I have never noticed a cage that has worn through. They just crack for some reason. They will crack with too much rocker arm end play and they will crack with perfect rocker arm end play.

    I suspect the other stuff is a gob of blue RTV that was smeared around the filter cover gasket and then it fell inside of the engine? That's about all I can imagine right now. If so, poor goobered engine. :cry
    #4
  5. disston

    disston ShadeTreeExpert

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    Rocker needle bearing. The proper fix is to replace all 8 bearings in all 4 rocker shafts. Some will try to fix just the bad ones and next year the next ones and then the last ones and, you get the idea?

    Those rockers are really different than what someone like I have. But they have the same needle bearings, don't they?

    Is the piece of plastic a hard piece of plastic or more like rubber?

    Charlie
    R90/6
    #5
  6. rambozo

    rambozo Been here awhile

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    it's a hard plastic shim, think its supposed to cut down on tappet noise
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  7. tbounds

    tbounds Adventurer

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    i took a picture but can'tfigure out how to post from my phone , the bearing is apprx 3/8inch long and and 1/8th in diameter . The blue stuff was soft rubber like
    #7
  8. supershaft

    supershaft because I can

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    Oh no. That sounds like the front main bearing locating pin. Your front main bearing could move and block the oil passages that oil the rocker arms. Sometimes they will run a long time or maybe forever without the pin and sometimes they don't.

    If the needle bearings aren't notched per my advise, I don't think you need to replace all of them. I don't think they fail like disston described. In my experience, they are like airhead lifters. Some flake and others don't. It's the same with rocker arm needle bearings IMO. Some cages break and others don't. They won't all eventually break but they all will eventually get notched.

    I am still thinking the blue stuff is silicon that was goobered on the filter cover gasket and squeezed out on the inside and then fell into the pan?
    #8
  9. hardwaregrrl

    hardwaregrrl ignore list

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    You need a photo share site like smugmug or flicker. You could also email me the pic and I'll post it for you. hardwaregrrl@yahoo.com
    #9
  10. Airhead Wrangler

    Airhead Wrangler Adios Mexico

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    Or blue loctite that got pushed through by a fastener
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  11. caponerd

    caponerd Kickstart Enthusiast

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    Gawd, first it was the oil filter getting put in wrong, then it was final drive splines, then clutch splines, incorrect wheel bearing pre-load....

    I'm losing track of all the things that are supposed to go wrong with these things.
    So far, (knock on wood), I haven't had a problem with any of them.
    With well over 100,000 miles on mine, should I be looking into this now?
    #11
  12. disston

    disston ShadeTreeExpert

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    Please regard the advice from supershaft more accurate than that from myself. He does this stuff a lot more than I. And I'm just anal about replacing everything, all the time.

    A two inch diameter thread of Locktight? And dry Locktight is not rubbery. Really sounds like Blue RTV. The picture will tell.
    #12
  13. tbounds

    tbounds Adventurer

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    I mailed photo of bearing please post so i some can look at it and give me advice
    thanks you
    #13
  14. hardwaregrrl

    hardwaregrrl ignore list

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    Here it is...

    [​IMG]
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  15. tbounds

    tbounds Adventurer

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    thanks for posting so quick . I downloaded flickr ,now what do i do to get photo from flickr to this site? i don't see an icon that asks for attachments .Yes i am very limited with computer skills
    #15
  16. elite-less

    elite-less Been here awhile

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    [​IMG][/QUOTE]


    Hmmmm...... Supershaft was on the mark, It looks like the locating pin to the front main bearing to me. I just installed one last month.

    If that's the case.... you'll need to pull the front bearing carrier to inspect. Hopefully, you can set/peen in a new pin, but if the bearing has moved or spun.... that's a different story.

    .
    #16
  17. Renner

    Renner rockin' the toaster

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    There you have it.

    better to discover it this way, tbounds.
    #17
  18. Bill Harris

    Bill Harris Confirmed Curmudgeon

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    Ouch. Agreed.

    Vech (Benchmark) is up-state near Starkville and I'm not up that much on Ms wrenches.

    I''ve thought about tapping the main bearing pin hole and substituting a loctited setscrew for that pesky pin. I've got a timing chain replacement coming up later this Spring and I ma considering going a little further and pulling the front main bearing cap for a peek at the pin.
    #18
  19. supershaft

    supershaft because I can

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    Robtg does that and it has some tricks to it. I have never tried my idea and it would take doing it to a lot of bikes to know if it would work real good for sure but I think it might be better than a set screw??? My idea is to put it in there and press some JB weld on over the top of the pin instead of peening it and then letting it cure over night before you put it in. Maybe a peen AND JB weld?

    I have a set screw in my bike that robtg did but man you do have to mind your P's and Q's while you are setting it up! I have peened a handful. The whole situation is a bit touchy IMO. I might be wrong but I think you can crack the bearing web during peening. Those bearing webs do crack! Make sure and look it over real good! After you take it out and before you put it back in!
    #19
  20. bgoodsoil

    bgoodsoil Dare to be Stupid

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    I lost that pin once. It cost me an engine.

    [​IMG]

    [​IMG]

    The oil starvation toasted the left rod bearing, the shells were half as thick as new bearings, and the crank had grooves in it. I had been crushing oil filters for a little while and had no idea what caused it. I blamed it on the cheap Hi-Flo filters I had. If your filter looks like this then your main bearing has spun. STOP RIDING THE BIKE!

    [​IMG]
    #20