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  1. #1
    Senior Member squeegy200's Avatar
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    Klein Integrated Bottom Bracket

    I have a 1996 Klein Pulse II hardtail frame. It has the integrated bottom bracket which is in need of service. Unlike conventional bottom brackets, these BBs are pressed in.

    This frameset was one of the last of the Chehalis Washington made framesets before they were acquired by Trek. I've been on the Klein website but there is no technical info on items prior to '99. In addition, they are referring me to my local dealers which don't offer much in the way of insight on the older framesets.

    There was once a local bike shop in my area that was authorized Klein and was properly equipped to deal with these BBs, but that shop has since gone out of business.

    Anyone have any tech info on how to service/replace these bearings?

    I do have access to a hydraulic press and the currently installed cartridge bearings clearly have visable part #s.
    Is this as simple as pressing out the old bearings and replacing with new cartridge bearings? Is there any special tools necessary?


    Any help appreciated.

  2. #2
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    I just got off the phone with my mechanic friend (~25 years), and he said there *is* a Klein tool for it (imagine that) but that you can do it with a press - you just have to be careful (obviously). It is just a matter of pressing out the old and pressing in the new. The "catch" is that you have to make sure you can keep the already pressed bearing in place when you put in the spindle and press in the other side.

    For the record, I haven't seen the Klein tool, so I can't comment on how to "design" you own. I'll try to get by to see him and see if I can inspect it for you.
    2011 Surly Crosscheck
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  3. #3
    Senior Member squeegy200's Avatar
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    My gratitude, The info you supplied is helpful.

    Cartridge Bearings are 6003 RSR so I am sure it will be easy to source or find equivalents. I do have round arbors that may allow me to press out the old bearings and install new ones. But it would be helpful to see if the tool provides any advantage.

    More info regarding the special tool is appreciated.

    Thanks again

  4. #4
    Senior Member
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    Here's your bearings:
    http://www.bikeparts.com/search_results.asp?ID=AB6003
    These are really common. Do a google search on "cartridge bearing 6003"

  5. #5
    Senior Member
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    I'm trying to get a pic of the tool for you.
    2011 Surly Crosscheck
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  6. #6
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    I'm sorry I couldn't get a pic of the "Klein tool", but I did get a good look at it and quite frankly it's just a bunch of "parts". Your arbors are probably similar, but the big thing is to get the slight inset correct (notice how the bearings are slightly inside he BB housing) for the bearings so that the cranks will "fit" right. The arbors on the Klein tool have this "inset" made into them.

    The tool is basically a large "L" shaped metal piece with the long end threaded all the way with the tip of it a smaller diameter that will thread into the end of the spindle and is used for removing and inserting the spindle. There is a "handle" that screws onto the long part and acts as the "force" on the spindle (reminds me a little of a crank extractor in function. There are several different sizes of arbors as well (total of eight pieces in all).

    My friend did mention that it's critical that you can do it right the first time you try, as the more times you "mess up" and redo it, the weaker the metal in the BB housing will become resulting in a weaker "grip" on the bearing (or pushing the bearings too far in). I don't know you well enough to comment on whether or not you could do this, just make *very* sure you can before you try and start.

    BTW, a little history on your Klein (according you my friend, and somewhat from my own recollections):

    My friend thinks your Pulse II is a '98 or '99 (which would put it after the Trek buy-out '97 (?)) because before Trek bought Klein, there was no model known as the Pulse (I or II). The two lower models were the Impulse (this one I can't remember the name for sure) and the Rascal. The Impulse was dropped right before the Trek buy-out and then "replaced" by the Pulse I, which was actually made in the Trek factory (had external cable routing). The Rascal was dropped right at the time Trek bought them and then the Pulse II "replaced" it in the line-up. The Pulse II was made in the Klein Washington plant using Gary Klein's plans, etc. so it's a great frame. My Attitude, BTW, was right above the Rascal and the Adroit was the top-of-the-line model right above the Attitude. They didn't sell too many Adroits since it was actually heavier than the Attitude, and of course more expensive.
    2011 Surly Crosscheck
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  7. #7
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    I realized this is an old thread; however, I have something to add to it that's fairly important for those who need the info.

    There's a Tech Manual for Klein's with some really nice photos and descriptions of the tool used (might be able to make one easily enough) for both the bottom bracket, as well as headset removal. It even tells you the proper steps you need to take, and that you need to have loctite on hand, etc.

    It's available for download here (and yeah it's in english). If for some reason it disappears from the web, I also saved a backup of it.

  8. #8
    Senior Member jjciiijs's Avatar
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    Quote Originally Posted by Bheleu View Post
    It's available for download here (and yeah it's in english). If for some reason it disappears from the web, I also saved a backup of it.
    This does not pull up in English for me
    Jeff
    Square wheels need not apply

  9. #9
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    Two Links in the one post.
    "Download" = 1997, 2002, or 2003 Tech Manual (Site is in Japanese, but PDF is in English).
    "Here" = 1997 and earlier Tech Manual

  10. #10
    It's MY mountain DiabloScott's Avatar
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    Quote Originally Posted by Bheleu View Post
    Two Links in the one post.
    "Download" = 1997, 2002, or 2003 Tech Manual (Site is in Japanese, but PDF is in English).
    "Here" = 1997 and earlier Tech Manual
    I've got those too, as well as 2004 and the generic owner's manual. downloaded from Klein site before they orphaned it. Send me an e-mail or PM if you want one.
    http://diabloscott.blogspot.com/

  11. #11
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    New to forum, old biker

    I don't suppose any of you still have access to that technical manual on the old Klein Pulse Comp bikes? I'm still riding the crap out of mine, but the bottom bracket is now starting to make all kinds of funky noises. I've been to 3 different bike shops, all of them telling me, "Sorry, nothing I can do for your old bike, but we have all these nice new bikes for sale..."

  12. #12
    It's MY mountain DiabloScott's Avatar
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    Quote Originally Posted by KleinPulseComp View Post
    I don't suppose any of you still have access to that technical manual on the old Klein Pulse Comp bikes? I'm still riding the crap out of mine, but the bottom bracket is now starting to make all kinds of funky noises. I've been to 3 different bike shops, all of them telling me, "Sorry, nothing I can do for your old bike, but we have all these nice new bikes for sale..."
    I've got the "Pre-1997" tech manual in PDF and it lists the Pulse Comp. Not sure if it'll do you any good. PM me your e-mail if you want it.

    Check out the Phil Wood site though, they have the best replacement bits.
    http://www.philwood.com/support/faqs.php
    http://diabloscott.blogspot.com/

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