A couple of points regarding other replies to this post.
Richard G has left his calliper un-bled. While this may not be a problem at
the moment, unless he is using silicon fluid the normal DOT3 stuff should be
renewed every couple of years to avoid the problem of moisture absorption
and low boiling points. If the nipple is stuck then all the fluid in that
run of pipe will remain unchanged. Only solution is to get the nipple out
or a recon calliper.
Donald advocates trying to break the seal with hammer blows. Gentle ones
will be fine, but get too heavy handed and the calliper (cast iron) may
crack. Even a small (unseen) crack is liable to propagate with the heat of
braking and fail catastrophically. Never tried this method (they have
always snapped off when I try and undo them) but it sounds feasible.
This whole problem sounds like the classic starting point for a good dose of
Shipwright's Disease (as discussed before on this list). The stuck nipple
leads to a reconditioned calliper. When removing the old calliper the brake
line gets broken. Instead of renewing just one pipe you decide to get the
whole car set. This leads to another problem, probably with the rear brakes
that you can't get to unless the body comes off...and so on.
Pat
> -----Original Message-----
> From: Greg Rowe [SMTP:growe58@hotmail.com]
> Sent: Thursday, March 07, 2002 3:02 PM
> To: Spitfires@autox.team.net
> Subject: Stuck brake bleeding nipple
>
> Sorry about all the questions recently, but I appreciate all
> the great advice. I have to admit that this one is about the
> TSV although I have had the same problem with the spit.
>
> I have a stuck brake bleeder nipple. A breaker bar and the
> correct size socket just rounded it off. Penetrating fluid
> didn't help. I'm thinking that heat would not be a good idea
> on a brake caliper (front disc brakes) what with the hydraulic
> fluid and various seals.
>
> I MAY try cracking open the brake line where it goes into the
> caliper and bleeding it that way. (a mess). But could there
> be air inside the caliper that I wouldn't be getting out that way?
> Do I have any other options?
>
> TIA!
>
> Greg Rowe
>
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