Matt,
Thanks for the info.

I have been looking at pics of replacement dryer bottles, but they don't 
have the same plug with led in them.  I thought I read in the bentley that 
there is a pressure relief plug built into the compressor.  Would I be ok 
with somehow filling the led hole in the dryer plug?  Maybe the dryer on 
my car is designed for a car that doesn't already have the pressure 
release in the compressor.  It may have been replaced by the previous 
owner with the wrong one.  


On Mon, 17 Jun 2002, Matthew Yip wrote:

> The plug is a safety relief valve for your a/c system - when a system
> malfunction occurs and the internal pressure escalates it also
> super-heats the system.  The plug is usually lead and melts with high
> heat - therefore when the system pressure gets too high and the
> internal temp gets too high, the plug melts and all of your freon
> blows out.  This happened to my BMW one day when it was sitting in
> the driveway - talk about a shock to the system.  The fix was to
> replace the dryer bottle itself although I don't remember what other
> pieces were faulty.  Then the system was recharged and all has been
> good ever since.  
> 
> --- Chad Rebuck <[email protected]> wrote:
> > I found a leak in my ac system.  Under one of the two connections
> > going into
> > the dryer/receiver is a 7/16" hex head plug with some small hole in
> > the
> > middle of it.  This small hole has what appears to be a silver wire
> > partially coming out.  What is the purpose of this plug having a
> > hole in it?
> 
> 
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