Rowlly21 Posted July 19, 2012 Report Share Posted July 19, 2012 Hello all Recently got by bike back up together and started riding abit. But after I had rode the bike i would put it in the shed over night to find that the lever had pulled in further than the previous day. So i bled it again to only find it did the same thing again. I assume i have a leak, I cant see any sign of it leaking so i am looking for the best way to diagnose the leak any help would be appreciated Thanks Andy Quote Link to comment Share on other sites More sharing options...
N.Wood Posted July 19, 2012 Report Share Posted July 19, 2012 Tried putting it in a bucket full of water and looking for bubbles / oil coming out? Quote Link to comment Share on other sites More sharing options...
Rowlly21 Posted July 19, 2012 Author Report Share Posted July 19, 2012 No havent tried that. Sounds a plan, Will try that Thanks Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 19, 2012 Report Share Posted July 19, 2012 What's it bled with? Quote Link to comment Share on other sites More sharing options...
Rowlly21 Posted July 19, 2012 Author Report Share Posted July 19, 2012 water and anti freeze. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 19, 2012 Report Share Posted July 19, 2012 Top the lever up rather than re-bleeding, that will do the trick. Quote Link to comment Share on other sites More sharing options...
Rowlly21 Posted July 19, 2012 Author Report Share Posted July 19, 2012 What do you mean by top the lever up ? Bleed just the lever does this mean ? You dont think its a leak? Thanks for your help Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 19, 2012 Report Share Posted July 19, 2012 Plug an open syringe into the lever with a bleed hose, half-fill the syringe with water, move the lever so the air can escape, pull the lever a few times, air will come out. Won't be a leak, no. If you want to see why, half-fill a syringe with water, put your finger over the end of the syringe and pull the plunger upwards. See all that air? That's what's in your brake! It only becomes apparent once you have used the brake, which is why it feels fine immediately after bleeding, but weird after you've ridden it for a bit. 2 Quote Link to comment Share on other sites More sharing options...
Rowlly21 Posted July 19, 2012 Author Report Share Posted July 19, 2012 Absolutely spot on Adam !! Thanks alot Andy Quote Link to comment Share on other sites More sharing options...
dann2707 Posted July 19, 2012 Report Share Posted July 19, 2012 I think mine's like yours Andy. Realllly not sure how to do this top up thingy bleed though!! Quote Link to comment Share on other sites More sharing options...
dann2707 Posted July 20, 2012 Report Share Posted July 20, 2012 Plug an open syringe into the lever with a bleed hose, half-fill the syringe with water, move the lever so the air can escape, pull the lever a few times, air will come out. Won't be a leak, no. If you want to see why, half-fill a syringe with water, put your finger over the end of the syringe and pull the plunger upwards. See all that air? That's what's in your brake! It only becomes apparent once you have used the brake, which is why it feels fine immediately after bleeding, but weird after you've ridden it for a bit. Holy shit! Just done this, brake is the best it has ever been. Pull the brake in a tiny bit and the pads move so much now!! Thanks for that Adam. But how come this is the first i've heard of this?! Quote Link to comment Share on other sites More sharing options...
Maxx Posted July 20, 2012 Report Share Posted July 20, 2012 But the hydraulic system is supposed to be close, I don't see why, and where does the air come. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 20, 2012 Report Share Posted July 20, 2012 But the hydraulic system is supposed to be close, I don't see why, and where does the air come. From the water, its how fish breathe Proper brake fluids don't do this as much. No worries Dan. Just haven't mentioned it before. Quote Link to comment Share on other sites More sharing options...
Maxx Posted July 20, 2012 Report Share Posted July 20, 2012 There's something I really don't understand The volume of the brake is always the same. If the water, with a correct bleed, fill all this volum, there is no air in the system. So if after a period there is air in the system, it results that some water escape (= it leaks a bit) What's wrong with that ? Quote Link to comment Share on other sites More sharing options...
BradJohnson Posted July 20, 2012 Report Share Posted July 20, 2012 Plug an open syringe into the lever with a bleed hose, half-fill the syringe with water, move the lever so the air can escape, pull the lever a few times, air will come out. Won't be a leak, no. If you want to see why, half-fill a syringe with water, put your finger over the end of the syringe and pull the plunger upwards. See all that air? That's what's in your brake! It only becomes apparent once you have used the brake, which is why it feels fine immediately after bleeding, but weird after you've ridden it for a bit. A video of this on the tarty site would be great, i can't really understand how do do this. 3 Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 20, 2012 Report Share Posted July 20, 2012 If the water, with a correct bleed, fill all this volum, there is no air in the system. Try pulling on the syringe as I said, that's the easiest way to explain it Video - I don't really see how it can't be understood from the text, but it will go on the list (which may take a few more years until we start to think about making more videos unfortunately, everyday stuff gets in the way). Quote Link to comment Share on other sites More sharing options...
Maxx Posted July 21, 2012 Report Share Posted July 21, 2012 Try pulling on the syringe as I said, that's the easiest way to explain it I tried : it creates lot of mini bubbles wich grows up when I pull the piston. But when I release the piston (to its initial place), bubbles become again very very small. But in use we push then pull on the brake's piston, so I don't see why it creates more air. Quote Link to comment Share on other sites More sharing options...
bike_dummie Posted July 21, 2012 Report Share Posted July 21, 2012 If it is a leak and doesnt just need topping up re bleed the brake with water and add food colouring so you should be able to see the leak. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 21, 2012 Report Share Posted July 21, 2012 It doesn't create more air, but the pressure releases the air from the water. So, your brake feels fine to start, then after a ride the air has come out of the water and risen up to the lever, so it feels like your brake has leaked. Quote Link to comment Share on other sites More sharing options...
Rowlly21 Posted August 1, 2012 Author Report Share Posted August 1, 2012 Dahhh Damn thing is doing the same thing again !! Worked for a week or so but no its doing the same thing again. Is the only solution to this bleeding it with oil. Thanks Andy Quote Link to comment Share on other sites More sharing options...
Blake Posted August 1, 2012 Report Share Posted August 1, 2012 does the lever syringe trick work with 04's? Quote Link to comment Share on other sites More sharing options...
ghostrider88 Posted August 1, 2012 Report Share Posted August 1, 2012 If bled with water,sure,why wouldn´t it work? Quote Link to comment Share on other sites More sharing options...
Blake Posted August 1, 2012 Report Share Posted August 1, 2012 The body shape is quiet different, how do I angle the lever? Quote Link to comment Share on other sites More sharing options...
ghostrider88 Posted August 1, 2012 Report Share Posted August 1, 2012 (edited) The body shape is quiet different, how do I angle the lever? So the bleeding port is at the same position as on 2005,it works the same for both. Edited August 1, 2012 by ghostrider88 Quote Link to comment Share on other sites More sharing options...
Blake Posted August 1, 2012 Report Share Posted August 1, 2012 I think you're missing my point. Quote Link to comment Share on other sites More sharing options...
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