blacky66 Posted January 2, 2013 Report Share Posted January 2, 2013 Hi guys havings problems with my rear brake on my Gas Gas txt pro 2009 as I was riding at hawks nest last Sunday it just suddenly lost pressure at the pedal can't see any leaks haven't tried bleeding it yet any other suggestions what I could look at?? Many thanks Quote Link to comment Share on other sites More sharing options...
nig1956c Posted January 2, 2013 Report Share Posted January 2, 2013 Hi check the hydraulic pipe where it goes through the swing arm as we had one break there. Quote Link to comment Share on other sites More sharing options...
blacky66 Posted January 2, 2013 Author Report Share Posted January 2, 2013 Ok thank mate I had a quick look round the bike before I put it in the van and couldn't see any fluid leaking!! And the fluid level hasn't dropped!! Quote Link to comment Share on other sites More sharing options...
coxy Posted January 2, 2013 Report Share Posted January 2, 2013 I had exactly the same problem with my back brake about a month ago. It was the seal thats had gone in the master cylinder that needed replacing. About 1 Quote Link to comment Share on other sites More sharing options...
blacky66 Posted January 4, 2013 Author Report Share Posted January 4, 2013 I've looks for any leeks and couldn't see an!! So think I'm just going to bleed the brake and go from there tbh seems the next step!! Hope this works as I've got a trial on Sunday lol looks like I might be riding my dads bike!! Quote Link to comment Share on other sites More sharing options...
doctorchopper Posted January 4, 2013 Report Share Posted January 4, 2013 If its the seal inside the master cylinder chances are you won't see any leeks it just won't build up pressure as the fluid passes by the plunger. I had a similar issue and it was the banjo bolt that connects the pipe to the master cylinder, it came slightly loose and sucked air into system, there was no fluid leaks on mine either Quote Link to comment Share on other sites More sharing options...
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