Thustler Posted July 30, 2014 Report Share Posted July 30, 2014 I've been trying to bleed my Hope mono trial brake (Older model, probably around 05) following this video... I've ran into a probem in that when I pull the lever in with the bleed valve open and then lock the valve and release the lever, it appears that the fluid level in the lever reservoir isn't dropping and no fluids being pumped through, anyone got any potential remedies for this? Thanks Tom Quote Link to comment Share on other sites More sharing options...
wilf Posted July 30, 2014 Report Share Posted July 30, 2014 Just keep going for abit, it usually takes a while for a level to start dropping quickly. Just make sure all the hose connectors are tight aswell. Quote Link to comment Share on other sites More sharing options...
Thustler Posted July 30, 2014 Author Report Share Posted July 30, 2014 Thanks, I'll give it another go tomorrow and let you know how I go on. Quote Link to comment Share on other sites More sharing options...
Thustler Posted July 31, 2014 Author Report Share Posted July 31, 2014 Having exactly the same problem, when I pump the brake there's no pressure in the system at all the brake was working until I tried to bleed it just not to the level I wanted really, Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted July 31, 2014 Report Share Posted July 31, 2014 Open the bleed nipple fully and let gravity do it's thing for a few minutes first. Quote Link to comment Share on other sites More sharing options...
persistant_itch Posted August 1, 2014 Report Share Posted August 1, 2014 As above, open the bleed valve fully and let some dot drip out. If nothings happening pump the brake once with the bleed valve open and then start bleeding the brake again according to the video. That's probably not the proper technique but it worked for me when I had a similar problem and had to flush the system and bleed it from scratch. You do use a bit more dot fluid but that's what worked for me. Quote Link to comment Share on other sites More sharing options...
Thustler Posted August 1, 2014 Author Report Share Posted August 1, 2014 Think I have finally got to the bottom of this, upon taken the whole system apart I realised that when I pump the lever with it not attached to the hose but with the reservoir full of oil the oil isn't even pumping through, upon trying to take the lever apart I also realised that the lever reach allen bolt is rounded off, which is a bit of the nightmare, I suspect that a piece of the rubber diaphram which was admittedly degrading a bit has got into the inner workings of the lever and blocked it up. Next step is to figure out how to get past my rounded off allen bolt. Quote Link to comment Share on other sites More sharing options...
Thustler Posted August 5, 2014 Author Report Share Posted August 5, 2014 Rebuilt the lever and cleaned out the internals and it still won't pump oil through, anyone else had this problem? Quote Link to comment Share on other sites More sharing options...
dezmtber Posted August 6, 2014 Report Share Posted August 6, 2014 Try the bleed screw open fully and press the lever in and out loads, really loads and just when you start loosing your temper the oil should flow. just keep trying it can take 5-10 mins sometimes. If that doesn't work your seal in the lever is split or damaged. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted August 6, 2014 Report Share Posted August 6, 2014 Will fluid drain through if you use gravity, like I suggested? Quote Link to comment Share on other sites More sharing options...
Thustler Posted August 6, 2014 Author Report Share Posted August 6, 2014 Nope, doesn't budge, left it for a good hour. Quote Link to comment Share on other sites More sharing options...
Thustler Posted August 6, 2014 Author Report Share Posted August 6, 2014 Finally managed to bodge my way around the problem, what I think has happened is a part of the rubber diaphragm has lodged between the lever piston and reservoir and blocked the flow, I got around this by bleeding it directly through the hose where the lever attaches and then filling the lever with fluid and carefully putting it back on, I then filled the reservoir and tried the brake and it's working again, better than it was before. Massive bodge but oh well it works, thanks for all the advice. Tom. Quote Link to comment Share on other sites More sharing options...
AdamR28 Posted August 6, 2014 Report Share Posted August 6, 2014 Good stuff - thought it sounded like there was a blockage. Quote Link to comment Share on other sites More sharing options...
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