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irunamok
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Yes and no they did not retract. I couldn’t even push them in. Ugh!
An interesting non-breakdown breakdown today, TWICE!
- Thread starter irunamok
- Start date
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irunamok
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Update for future reference: mobile mechanic came, rebuilt the rear caliper, new pads, bled the line. Two miles later: locked up rear brake AGAIN! Lines are fine, bled, completely new DOT4, new pads, pistons in fine shape, same outcome! Absolutely no problem bleeding the brakes so it’s not a problem with the flow to the caliper. We looked into the master cylinder and it was perfect. No blockage no residue. So the bike remains in Dallas and I’m in Houston right now for family reasons.
An interesting sidenote: the new pads, after they were seated in carefully, apparently only wore on the top half. Literally the bottom half of the pad was untouched. He checked the disc for unusual wear, and it was all within specs. Well with within actually. Visually it looks like a perfect disc, no waving or wobbling. Weird.
Long story longer, I’m going to order a new disc and a master cylinder rebuild kit, and we’ll see how it goes from there! It will be a few weeks before I’m back up in Dallas so there won’t be any updates for a while.
An interesting sidenote: the new pads, after they were seated in carefully, apparently only wore on the top half. Literally the bottom half of the pad was untouched. He checked the disc for unusual wear, and it was all within specs. Well with within actually. Visually it looks like a perfect disc, no waving or wobbling. Weird.
Long story longer, I’m going to order a new disc and a master cylinder rebuild kit, and we’ll see how it goes from there! It will be a few weeks before I’m back up in Dallas so there won’t be any updates for a while.
Replace the Rubber line, have had them sperate internally holding pressure.
Hmmmm....... if you opened the bleeder - and allowed fluid come out, the pistons should be able to retract and go back into the caliper.
It appears that something is not letting the pistons return and a new disk should not change that. It would seem that the hose has become a one way valve as St-Gerard mentioned or the tiny return hole in the rear master is clogged and it's hard to see.
I'm sorry you are having this problem and at some point the machine will submit to your efforts and work correctly. Keep us posted.
It appears that something is not letting the pistons return and a new disk should not change that. It would seem that the hose has become a one way valve as St-Gerard mentioned or the tiny return hole in the rear master is clogged and it's hard to see.
I'm sorry you are having this problem and at some point the machine will submit to your efforts and work correctly. Keep us posted.
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irunamok
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UPDATE FINALLY: got back up to Dallas to get the ST back on the road with a rear master rebuild kit and VOILA the bike is perfect, no further rear brake problems. He said there was no obvious blockage that he could see but the kit fixed her right up. We also checked the lines, of course, no issues. Getting to the master was an interesting disassembly. So finally after two plane tickets and two mechanic visits the bike was fixed with a $31 kit. But it was a valuable lesson. Not gonna lie, it will be a moderately stressful 270 mile ride home. First the alternator, then the rear brake and I still haven't gotten the bike all the way home. I don't believe in bad luck but it has been a challenge. And yet I still love the bike. And it's in great shape for the long Texas riding season.
Thanks again for all the thoughtful and instructive comments.
To anyone in the greater DFW area with mechanical needs, I can highly recommend "Moto Man of 214", his name is Eric (469) 219-1297. He only works on metric bikes. He's very responsive and very busy.
Thanks again for all the thoughtful and instructive comments.
To anyone in the greater DFW area with mechanical needs, I can highly recommend "Moto Man of 214", his name is Eric (469) 219-1297. He only works on metric bikes. He's very responsive and very busy.
Uncle Phil
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Just beware that sometime the 'slider' pins in the caliper get covered in gunk and the pads do not move very well.
Whenever I do a rear tire change, I clean all the pins (pad and caliper pins) and lube them with Sil-Glyde brake lubricant.
Whenever I do a rear tire change, I clean all the pins (pad and caliper pins) and lube them with Sil-Glyde brake lubricant.