The brake shoes are probably hanging up on a lip caused by wear.
I've found that trying to 'unscrew' the rotor while pulling on it
sometimes works. The only other thing to do is to cut off the
head of the pin that holds the offending shoe onto the backing
plate. You will be able to see it on the backing plate just a
flat round head that moves when you try to get the rotor off.
Need a good pair of side cutters to do that and of course new
part to put it all back together. Also have found that sometimes
the lining of the shoe comes off and gets stuck in there. Then
the only way is to cut the head of that pin off.
Thing to remember about bleeding is that if you have a lot of air
in a line and new calipers then pumping just moves the air in and
out of the bleeder valve. Air isn't as dense as the fluid so that
is what will move first and easiest. You need someone to hold
their finger over the open bleeder valve before you let your foot
off the peddle and then take their finger off the bleeder valve
before you push back down on the peddle, and over and so on till
the fluid starts to come out. One side at a time, only one valve
open at a time. Or as you are going to do now, a pressure or
vacuum bleeder. (You must have a hell of a vacuum system and live
on Jupiter. I've never seen a Coke bottle get crushed, A can yes
but never a bottle.) :-)
Sometimes the only way to get the top hose loose is to use a good
pair of vise grips on the small nut on the tube. If they are
really rusted on then the tube will probably twist and break and
then the only thing to do is put in a new tube there also.
Manfred
Message: 9
Date: Fri, 28 Oct 2016 20:44:59 -0700
From: clay <redgh...@comcast.net>
Spent the day working on the brake issues. PIA
Rotors were less than willing to let go. Neither side would come
off no matter the blows with a rubber mallet or the 4# BFH. They
would loosen, but hung up on the parking brake bottoms. Screw
it! I will come back to that when I can figure out how to get
the top of the darn hoses loose. Anybody have a good idea? I
put heat to them, Kroil, freeze stuff, there was an excess of
slippage and the 11mm nut wanted to round. I stopped before I
really did damage.
I put the fresh built calipers on with the old hoses. I cracked
the bleeder and filled the reservoir. Then, I pumped the stop
pedal like a mad man for around 20 minutes. Nothing was coming
out the far end. It was getting dark and there was not enough
time to build a pressure bleeder. I did have a coke bottle that
I tried to make a quick vac bleeder out of. It crushed. Instead
of messing about more, I put everything away and went in for dinner.
While cooking, I saw an old Nalgene bottle on the counter and
decided that would be a better pressure vessel. I poke holes
sized for the tubing, slipped them in, used some RTV to seal it,
and will allow that to set up, then try to draw out the brake
fluid in the morning
clay
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