the DR650 thread

Discussion in 'Thumpers' started by sleepywombat, May 1, 2006.

  1. TrophyHunter

    TrophyHunter Long timer

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  2. newride

    newride Been here awhile

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    Thanks Bruce,
    This is what is behind the seal. a little dirty, most of the rubber I got out from the last seal. So far. it really just looks like the seal is.......to big? It does go in a little, but not any further. No sign of any spring thing either. Hmm.

    Attached Files:

  3. newride

    newride Been here awhile

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    this is as far as the new seal goes in.

    Attached Files:

  4. procycle

    procycle Long timer

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    Looks to me like the steel shell from the old seal is still in there. Pry that out and the new seal will pop in just fine.
  5. ER70S-2

    ER70S-2 Long timer

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    :nod

    If that seal wasn't upside down, you'd have an edge to lever the seal out. :huh Now you'll probably have to ruin the seal on the bearing itself getting the shell out.

    The bearing hub is flush with the outer race:

    [​IMG]
  6. ER70S-2

    ER70S-2 Long timer

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    I didn't want to grind the welds; if you don't shorten the center pipe, it will look like this. The finished result isn't as 'finished'.

    [​IMG]
  7. The Breeze

    The Breeze Been here awhile

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    How much fuel did you have left in the tank?? I have the Safari as well. Once you are down to about 1-3 gallons remaining, you can start to get fueling issues. This is because the tank was designed for a carb that is no longer in production on newer DR's (i.e., the fuel inlet to the carb is now higher). This puts the bottom of the "tank wings" lower than to fuel inlet to the carb. It works fine when the tank is full (and for at least 6 gallons), because the fuel creates enough pressure to force the flow. But when it gets low....there can be issues. Some have remedied this by rotated the carb inlet from vertical to a horizontal postition....this will certainly help. If this is your problem, another option is to put a valve on the end of your breather hose (I got mine at an auto parts store). Once you get down to a fuel level in the tank that is causing it to studder, you can then blow into the hose (which pressurizes the tank), then close the valve. If you do this, note that as the fuel burns, the pressure inside the tank is reduced, and eventually a vacuum is created in the tank, which will then cause the bike to studder/stall again (say around 30-50 miles). At that point, you simply open the valve and repressurize the tank. It's somewhat of a pain in the ass....however, I've been in places where I needed the range, and was glad I had it. Like I said, it should run trouble free for around 6 gallons....but you have to work to utilize the remaining fuel.

    Curious to know if this is your issue.

    The Breeze
  8. newride

    newride Been here awhile

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    so if I get out the metal shell, the rubber seal should go in? It doesn't need a new metal shell? So why does the metal need to be in there? The new seal has no metal piece with it.
  9. jungleplant

    jungleplant Motorcyle Stuff

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    could be water couple drops rolling around and going down the hole once in awhile , did it start right after a refuel
  10. ER70S-2

    ER70S-2 Long timer

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    The petcocks are so low on the Safari that the fuel line has to make a 'tall' loop to get on the carb inlet. That will trap air and literally vapor lock.

    So if the tank is anywhere below half (guesstimate), the bike might stall. Next time it happens add fuel to raise the fuel pressure in the tank (head).

    There's a video on how to twist the carb inlet, done by someone at Safari. But I'm late and have to leave.

    This is not the issue if it's happening with a full-ish fuel tank.

    205'd :freaky
  11. planemanx15

    planemanx15 Long timer

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    Took the DR for a ride today with the new TM-40 carb. When I first starting the bike, i let it run for a few mins with the choke on, and when I shut it off, the bike died, Just figured it still cold, so I started again, and just rode with choke off, throttle up. it was all street riding, mostly on the highway, only about 20 miles, and died at one light when I bleeped the throttle. I got home and it felt like the idle was a bit low, so i turned the knob in a little bit it while sitting on the bike. I smelled gas, but thought nothing of it. Got off the bike while it was running, and saw fuel spilling out of the vent hose. I followed the vent hose up, and it was the one under the Idle adjustment (see pic). What is this from? When I shut the petcock off, the fuel stops flowing from the vent hose.

    I would like some advice before I start pulling the carb apart, Thanks guys..

    Attached Files:

  12. ER70S-2

    ER70S-2 Long timer

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    The metal shell is rubber coated, it is the seal, that's why you had so much trouble getting the rubber peeled out of the wheel. Try to bend your new seal, it isn't the rubber giving that stiffness.
  13. newride

    newride Been here awhile

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    ahhhh, Thanks so much.
    Now to get that metal piece out without destroying the bearings.........:huh
  14. planemanx15

    planemanx15 Long timer

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    Ughh.. The worst kind of problem... I went out to the bike after it cooled and bit and tried to simulate the problem again... No luck
  15. ADV8

    ADV8 Taumarunui..Darwin..

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    The rubber body of the seal is normally bonded to/over that metal part.
    That wheel bearing does not look to flash either (an easy replacement)
  16. GISdood

    GISdood Been here awhile

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    Here's that video...

    <iframe src="http://www.youtube.com/embed/7CyCTiB83-I" allowfullscreen="" frameborder="0" height="315" width="560"></iframe>
  17. steve o 77

    steve o 77 BRAAAP!

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    someone correct me if Im wrong but I think that means the float is set way too high allowing the bowl to overfill.
  18. ADV8

    ADV8 Taumarunui..Darwin..

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    I can't remember if the hose in the picture goes to the bowl drain (probably not) or up via a internal tube to a overflow but.........

    My TM40 has done this a few times over the last few years for no apparent reason.
    Once was coming into Top Springs (dirt road in the middle of nowhere) and noticed it exiting fuel from a hose.
    Stripped the carb but found no obvious signs of the fuel seat not seating.

    Another time I came out of a large hardware store to find the bike sitting over a '3 foot puddle of fuel.

    Could the float stick once in a blue moon is still ??????????
    I never leave the fuel taps on,if it was to run down the inlet tract that might risk hydraulic ing the engine also.
  19. epix1718

    epix1718 Been here awhile

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    Mine did this as well, I removed the carb to adjusted the float and has never occurred again. Pretty simple to do, I was a newb and got it on my first try. Maybe it was just beginners luck :rofl
  20. steve o 77

    steve o 77 BRAAAP!

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    It also stripes oil off the cylinder walls accelerating wear on the piston rings and cylinder.

    lol yeah that is pretty lucky. There are lots of techniques for setting the bowl height, I've never done it though.