ktm 500 exc?

Discussion in 'Thumpers' started by Visigothic, Apr 27, 2011.

  1. Sparrowhawk

    Sparrowhawk Long timer Supporter

    Joined:
    Sep 26, 2005
    Oddometer:
    4,855
    Location:
    Eastern Washington, USA
    The 640 wheel comes in two pieces, the wheel itself and the sprocket carrier, which is separated by the rubber dampers. The sprocket carrier has a single bearing that takes all the load of the chain drive and as far as I've found is only available through KTM and it's not inexpensive.
    Fast1 likes this.
  2. Marco propje

    Marco propje Adventurer

    Joined:
    Mar 19, 2020
    Oddometer:
    24
    Location:
    Holland
    Lager 640 Adventure achterwiel €36 = 42$
    Ik heb het gehaald op mijn ktm 500 exc 2019.
    Partnumber 0625032057
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  3. MasterMarine

    MasterMarine Long timer

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    There are 2 different versions of the hub and carrier from what I can tell. One of them has a single bearing and the other has 2 in it. Both versions look like they will work. There are some threads on here about the KTM cush hubs where you can search up the info. In the threads, riders have found other ways to source the bearings besides the KTM dealer.
  4. Sparrowhawk

    Sparrowhawk Long timer Supporter

    Joined:
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    I had a 2000 640 and went through a couple of the sprocket carrier bearings in the 15 years I owned it so I got curious and looked at various years parts fiche. From the 1996 620 EXC through 2006 640 Adventure, the rear wheel was the same and had the same bearing on the sprocket carrier, #28 in the photo. Part #0625032057, GR. BALL BEARING 3205B-2RSRTNG, $89 US. Several on-line retailers said it was not available from the manufacturer or didn't have an "Add to Cart" option. Not good.

    [​IMG]

    In 2007 KTM brought out the 690 with a two bearing sprocket carrier, #26 in the photo.

    [​IMG]
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  5. Bitingdog

    Bitingdog That's not my dog

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    It fits fine with the 640 spacers. The 640 wheel works on a 2020 350xcfw too.

    No rabbit hole!!!
  6. Bitingdog

    Bitingdog That's not my dog

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    I got one recently from BC bearing, no problem. Brought the old one, and they sold me something Japanese. Easy peasy
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  7. NoelJ

    NoelJ Long timer

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    Bearings almost always have a cross-reference, although recently a lot of things have gotten hard to find. Bitingdog's method - show up with the old one - has never failed me, although I do hear bad things about John Deere bearings. Can't confirm it though.
    Bitingdog likes this.
  8. SR1

    SR1 Going to America!!!!

    Joined:
    Apr 6, 2006
    Oddometer:
    7,013
    Location:
    Knockersville, TN
    My wheel isn't coming with the 640 spacers, wondering if I can still find them, or if my 500 spacers will work (?)
    Bitingdog likes this.
  9. Tortuga353

    Tortuga353 Been here awhile Supporter

    Joined:
    May 2, 2017
    Oddometer:
    487
    Getting ready for the Smokey Mountain +500+. We’ll see how we do but I have the 500 v8 version if weather or issues make things hairy. Hopefully it will be a nice adventure with some fall colors.

    Attached Files:

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  10. Bitingdog

    Bitingdog That's not my dog

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    Should be fine
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  11. Colemanfu

    Colemanfu King of all manfu

    Joined:
    Jan 27, 2006
    Oddometer:
    5,883
    Location:
    DAYTONA USA
    Pulled the skid this weekend in prep for the MX season down here in Florida. Dang it's taken a proper beating! That's a huge indentation on the center :fpalm

    [​IMG]
    Also spooned on a new front.
    [​IMG]
    The machine absolutely flew!
    [​IMG]

    42 MPH is my sweet spot for the 100 footer. Right at that point of uncomfortably fast.

    [​IMG]
    And that was my first proper MX front tire. I've always ran a fattie for woods but add the 300 to the garage so now it's strictly MX duty for the 500! I also pulled the bark busters for the first time.:norton

    [​IMG]

    I've always removed the 3lb head light, kick stand, and rear rack. I bet I've removed 10lb of crap.

    [​IMG]

    I keep the bigger tank but only run like a gallon of fuel.
    Fast1, Bitingdog, Buildzall and 3 others like this.
  12. irlvnt

    irlvnt Adventurer

    Joined:
    Sep 4, 2015
    Oddometer:
    58
    Location:
    Colorado
    I'm sure this has been discussed before but I can't find it in my search.

    What is the fix for the gas cap sticking shut? I have a 2012 450 XCW. Once those locking pins click in I need a channel lock pliers to get it off. I just can't seem to push down the external tab far enough to get it to release.
    I try to not twist it on all the way but sometimes it just goes too far.
    I'm also willing to buy an aftermarket replacement if there is a good solution there.
  13. RideFreak

    RideFreak Torque Junky

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    Google KTM gas cap fix, the fix I saw involved using a razor knife to trim a little bit of the plastic. I don't use a stock tank so I never needed to do it.
    Buildzall likes this.
  14. wheels2

    wheels2 Been here awhile

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    May 3, 2014
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    Location:
    Wilmington,Ohio
    Trimming a wee bit off the little tabs on the bottom side of the cap work for me.
    Buildzall likes this.
  15. Bungholio

    Bungholio Long timer

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    Wipe a little grease or Vaseline around the opening, I have little trouble getting the stock cap off.
  16. irlvnt

    irlvnt Adventurer

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    Colorado
    Done! Thanks for the pointers. I cut off two of the three tabs. Now it's easy to work like it should. I also used a dab of grease on the gasket. I've used grease before and has helped some for a while but always got stuck again.
    Apparently there is quite a but of variability in the fit from the factory. Plenty of folks have had problems with this, and of course they just get called out as weak idiots by those whose caps worked properly.
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  17. TwilightZone

    TwilightZone Long timer Supporter

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    Short maint turned into a big maint. 2014 500exc.

    Thought I'd bleed the clutch and brakes. Yeah, why not keep ahead of stuff.
    Couldn't get the clutch to bleed properly. After about 3 hours of attempting to bleed...
    I pulled the inner 'drain' gasket off. Dammit. All kinds of crap was in there.

    Looked at the brake master cylinder.... the inner gasket had bloated and partly disintegrated.
    Probably crappy materials from Brembo. Not resistant to brake fluid.
    Now it's rebuilt master and slave cylinder.

    If you've got a bike of that vintage better check the gaskets/o-rings etc.
    DesertRatliff and Bitingdog like this.
  18. wbbnm

    wbbnm Long timer

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    I had a problem bleeding the clutch about a year ago. I decided it was a procedure problem in that I probably wasn't moving the lever properly. I ended up back forcing fluid up the line from the bottom with a syringe. It took a few tries, but this finally worked and the clutch works fine now.

    It never occurred to me the inner drain gasket. Mine was a 2013. So where exactly is the inner drain gasket and how do you check it?
    SR1 likes this.
  19. Colemanfu

    Colemanfu King of all manfu

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    DAYTONA USA
    And the braaap vid from the first day of MX season!

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  20. TwilightZone

    TwilightZone Long timer Supporter

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    Pretty good coverage on rebuilding the master.

    White thing he is prying out. Piece of clutch cover gasket was under it.

    upload_2021-10-12_8-37-25.png
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