[Shotimes] rear calipers sticking

[Mike.Wojton@us.o-i.com]

1.  New.  Like you said.  Could be, but unlikely.

2. Rear cables were just replaced.  Old ones (not the originals, BTW)
were worn through the sheathing, and were binding up.  They adjusted
the cables enough so that when the e-brake was released there was a
little slack at the end of the cable.  Calipers still stuck.  I don't 
think
there's anything wrong with the cables.

3. Well, they're new with the calipers.  I greased the heck out of them.
They shouldn't be stuck.  As some say, the brackets could be bent,
causing the pins to bind.

I don't think it's the master cylinder.  The brake pedal returns all the
way to the top.

I think what I'll try, in order, is a fluid flush, brackets, and hoses.
I don't have a garage to do it in, so I'll have to work around the
weather.  Which is supposed to be crappy this weekend.


Mike Wojton
Toledo, Ohio

-'95 White MTX
   '96 Brake Upgrade

Do not taunt Happy Fun Ball.




Donald Mallinson <dmall@mwonline.net> wrote on 12/05/2003 10:50:09 AM:

> Mike,
> 
> If you can bleed the rear brakes easily, then it isn't the 
> flexible lines.  I can give you three ideas (plus a couple 
> more!):
> 
> 1.  Bad caliper (it happens, even to new ones, but is unlikely)
> 2.  Bad emergency brake cable, be sure it releases all the 
> way.  The lever on the back should release and settle 
> against the stop peg every time.
> 3.  frozen or bad slider pins.
> 
> I guess there might be the chance of a bad master cyl, but 
> it is rarely that type of problem, you can pull up on the 
> brake pedal to see if it is that.
> 
> Since it only happens on cold days (below freezing?) I guess 
> there is the possibility that there is still some water 
> somewhere in the system, try flushing all the brake fluid 
> again, and double check that the fluid flows free at the 
> rear calipers.
> 
> Don Mallinson
> 
> Mike.Wojton@us.o-i.com wrote:
> > I've been having a problem with my rear calipers.  When I release the
> > parking brake, they want to stick for a while.  So much so that the 
car
> > won't roll down my driveway on its own.
> > 
> > Both calipers are new NAPA units.  In fact, I replaced one of them
> > again because the replacement leaked around the piston.  The slide
> > pins should still be greased up good.  The cables were just replaced
> > last month.  The shop that did the cables played with the adjustment,
> > and they're convinced that the calipers are sticking.  They had the
> > cables adjusted so far out that when the pedal was released, there
> > was no tension on the caliper.  I'm convinced.
> > 
> > This only happens when it is pretty cold out.  (of course, it's going 
to
> > start happening alot more now)  What are the odds that the calipers
> > are bad again?  Maybe a batch of calipers were remanned with too
> > tight of tolerance in the pistons?  Or, because it only does it when
> > it's cold, if the caliper housing and the piston were different 
materials,
> > they contract differently in the cold?  I thought I read where they 
can
> > have steel or phenolic pistons.  I won't know what I have until I take
> > them off again.
> > 
> > So, anybody ever have this kind of problem before?  Any comments?
> > Constructive, that is.  ; )
> > 
> > 
> > Mike Wojton
> > Toledo, Ohio
> > 
> > -'95 White MTX
> >    '96 Brake Upgrade
> > 
> > Do not taunt Happy Fun Ball.
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> > 
> > .