I've got a 99 fxst (softail standard) and I replaced the rear master cylinder after I found out one of the O-rings was blown. I went to go bleed the system and I got some fluid out of the bleeder then it stopped and all I get is air, and the reservoir is full. I put my mouth around the hose on the bleeder (on the caliper) and sucked on it (haha) and it won't let me suck any air, it's tight. Aren't I supposed to be able to suck air out, only makes sense to me that I should be able to. I took the lower brake hose off and took the bleeder out and blew about 15lbs psi through it to make sure there were no blockages and it was fine. Reconnected the hose hooked the vacuum pump and nothing and I still can't do it manually either.


Unfortunately I'm thinking there is a blockage in one of my lines or the caliper is stuck open, the bike rolls fine. If the caliper is stuck open will that prevent fluid or air even from coming out of the bleeder?

 

By any chance, do you have the cover screwed down on the master cylinder? Needs to be loose till all is well. It's not vented , it's just works as a diaphragm bellow system principal. With a box wrench on the rear bleeder and it just slightly snug and a hose over the end and into a jar. Pump up the master with your hand and break the bleeder. When the pedal goes to the bottom, snug up of the bleeder slightly. ow pump up again and repeat. Try to never let up on pedal with bleeder open since even in a jar with fluid around hose, it can suck some back around threads. It's going to take a while since you probably got a ton of air in it. Really, the master should have been bench bled first. Depending on cylinder position, the hole is not open to suck fluid thru. You should be able to blow thru from the hose that hooks to master back to caliper.

 

Thanks! I can't blow through the hose on the caliper though, or get a vacuum either, and the bleeder is out even.

 

Sorry, and yes the cap is off the master..

 

Ok, I got it. There was a bunch of gunk in the line and the piston was frozen up as well. I've got fluid to the rear now. But now I have another issue. The rear pads are held on with a spring type piece of wire, about four inches long and has two hooked ends on it. Problem is that wire flew off when I took the caliper loose and I'm unsure of how or where it hooks to the backside of the caliper. Anyone by chance know? Kind of a hard question to answer, sorry.

 

This help..
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[QUOTE=RIPSAW;13188256]This help..
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You the man brother, yes it helps! Thank you!