Re: IML: catastrophic oil loss

["Pete Engel" <peter.engel@xxxxxxxxxxx>]

Fred,

The Safeguard Sentinel "sensor" is really just a plain old oil pressure
switch.  There's a special socket designed for removing/installing the
things.  In fact, there are quite a few different sockets made just for oil
pressure switches/senders and every time I think I have all the ones I need
a new style switch/sender is released.  Figures.  Anyway, you will have a
lot of difficulty removing that switch using a plain 12 point socket of any
size.  I suggest that you buy one of the sockets or find someone who will
loan you one.  Any NAPA store will have on on the Lisle rack.

The switch is simply a steel housing with a reinforced rubber diaphragm,
electrical contacts, and a spring.  On the day the leak started it was
simply time for that rubber diaphragm to give up the ghost.  No special
circumstances needed.  The usual failure mode is a slow but presistent leak.
Yours was just a bit more dramatic.  Maybe the black bakelite upper part is
cracked allowing greater leakage.

Pete in PA


From: "Frederick Joslin" <fljoslin@xxxxxxxx>
Date: Thu, 27 Jul 2006 20:05:33 -0500
Subject: Re: IML: Catastrophic oil loss

It appears that the Safeguard Sentinel system sensor is leaking. The
sensor is in very tight and I will have to work on getting it out. Weird
that all of a sudden it would start to leak. It appears that no damage
was done to the engine (I hope) so I feel very lucky.





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