Posted by ScottyHOMEy on February 04, 2009 at 09:42:06 from (64.222.201.63):
In Reply to: super a cooling help posted by miller farms on February 04, 2009 at 09:14:59:
Not sure what you pulled out there, friend. First thought is that if it threaded out, it ought to thread back in???
Some SAs had water pumps, most did not. The intended drain for the system was a plain old 3/8" pipe nipple about 4 inches long threaded into the bottom of either the pump or the inlet casting, whichever you have, that then passed down vericcally through a hole in the front casting so you could get to it and it would drain to the ground. It was closed by a cap (not a plug) on the bottom end.
Trick is, with field repairs and alterations made over the years, you're apt to find just about anything there for hardware. The original cap on that pipe nipple had Mickey Mouse ears, like a wingnut, on it. That often got replaced with a plain pipe cap. If that's wehere you're working, you might also find a 3/8" pipe plug either in a union wound onto the lower end of the pipe,or, if there's no pipe at all, a pipe plug directly into the drain outlet on the bottom of the pump or inlet casting.
A more challenging scenario is that somebody may have just wound a machine bolt into the tapered pipe thread and got it to seal, but buggered the threads in the process, which would explain your difficulty in getting it back in.
Bottom line, if nothing's broken, the only place that removing one plug or cap that should drain the coolant is from whatever plumbing parts you find on the underside of that pump or inlet.
If you pulled something else, come back and let us know, and one of us can help figure out where you are and what you need to do next.
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