hamfist Posted December 11, 2016 Report Share Posted December 11, 2016 Hi guys, Just bought myself an old SY250, and giving it a bit of love. I've determined that the rear brake doesn't work, builds up no pressure at the pedal and no fluid comes out of the bleed valve. I'm planning on pulling the master cylinder and checking it out - how do I remove this thing? Do I have to drop the swingarm or something>? Quote Link to comment Share on other sites More sharing options...
jreilly Posted December 11, 2016 Report Share Posted December 11, 2016 Had a few sys I do not remember but you should be able to unbolt from frame and drop it out.JR Quote Link to comment Share on other sites More sharing options...
ridgrunr Posted December 11, 2016 Report Share Posted December 11, 2016 It'll come out if you remove the top shock bolt so you can articulate the swing arm all the way. If you can, undo the brake hose at the master cylinder. If you can't, you need to undo the brake caliper at the disc so there is no tension on the brake line. There is not much extra length in the hose and if you drop the swing arm all the way down without taking the tension off the fear brake line it will pull the line out of the banjo fitting on the master cylinder forcing you to buy a new rear brake hose. I learned the hard way. Quote Link to comment Share on other sites More sharing options...
hamfist Posted December 13, 2016 Author Report Share Posted December 13, 2016 Thanks for the tip. I've actually solved the problem I think. Using the syringe sucking technique rather than the pedal pumping approach I've now got some pedal pressure. Well see how it goes... Quote Link to comment Share on other sites More sharing options...
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