chrislemon

Is there anything I can do to make the job easier when removing the proportion valve?

I appreciate hearing it takes a lot to get all the air out. I have gone thru almost a full bottle of dot 3 and am no closer to building pressure than when I first started. Its almost like the actuator that is going into the bellows portion on the proportionate valve is inserting air into the system. Is there a systematic approach to fault finding the cause of not building pressure?

Since I have found the button to make a "new thread" I will copy what was said before I ask my next question.... chrislemon I had no back brakes and so I replaced all the cylinders in my rear caliper in the fall. Now that it is spring I see I still don't have rear brakes. Upon further investigation it looks like I am getting lots of air when bleeding the back brakes but still no pressure on the back brakes and yet the front is doing great and the fluid reservoir burbs when I apply the front brakes. When I cracked the line going into my rear calipers and apply the back brake I did not get a surge of fluid coming out. What should I check now? PS I can't seem to find where the metering valve is located either (how to get to it) bongobobny Now, chances are you probably have a plugged up proportioning valve which is attached to the rear of the rear master cylinder. The metering valve, on the other hand is attached to the frame towards the front by the battery along with another bleeder as there is a high point in the lines and air can get trapped there. Due to the fact you are saying the front brake works fine there should be nothing wrong with that as the metering valve only works with the front brakes... chrislemon Now my question is "where is the rear master cylinder"? I would think its the brake reservoir on the handlebars but I don't have anything attached to it. If it is in another location than that tells me I am also bleeding my rear brakes and filling the front brake reservoir. Sometimes its just better to leave things to a mechanic(go ahead and have a good laugh at my expense). PS When I do find this proportioning valve, do I just blow it out to unplug it? Thanks Newbie

Since I don't see where to make a new thread I have decided to reply to this thread. Since its an older thread I trust I have not cut anyone off in their communication. I had no back brakes and so I replaced all the cylinders in my rear caliper in the fall. Now that it is spring I see I still don't have rear brakes. Upon further investigation it looks like I am getting lots of air when bleeding the back brakes but still no pressure on the back brakes and yet the front is doing great and the fluid reservoir burbs when I apply the front brakes. When I cracked the line going into my rear calipers and apply the back brake I did not get a surge of fluid coming out. What should I check now? PS I can't seem to find where the metering valve is located either (how to get to it)