[Shotimes] rear calipers sticking

[Donald Mallinson]

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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