1941 Cadillac Series 63 Water Pump heater hose connector

[J. Russo]

Is anyone familiar with this type of drain cock? It is leaking. Do I have to remove the entire fitting from the water pump? I was hoping the middle part I unscrewed would come out instead of removing the entire fitting. It's in there pretty tight. I'm also wondering if this is 100% metal or if there is a rubber gasket of some type on the inside. I put plumbers tape around the threads and tightened it but not sure if that will hold.

Any advice will be greatly appreciated.

Thanks

[39LaSalleDriver]

Those type of valves are used on my 39 LaSalle for the heater lines. Both of mine had been shut off for years and were crudded up and shot so I ended up pulling the whole valve. Almost became a disaster because the one on the block sheared off and I ended up having to very slowly and carefully bore it out and rethread the block. I got VERY lucky and my tap was able to refind the original threads. I replaced them with these which were about as close as I could find as a replacement. https://www.amazon.com/gp/product/B000DCNGKQ/ref=ppx_od_dt_b_asin_title_s00?ie=UTF8&psc=1

[Chris Cummings]

Hi John,

The part with the hexagonal rim should be screwed back into the body of the valve and should stay there.  The tee handle in the far right of the photo is supposed to be used like a faucet handle to unscrew the threaded shaft, which pulls the disc or plug out and opens the valve.  Does that make sense?  After years of disuse, the insides may be stuck and the shaft may not be easy to turn.  PB Blaster is good for that. 

Good luck!

Chris

[J. Russo]

Thanks for the response. I saved the Amazon Link. I prefer to replace it, but I may have to remove the water pump and put it on a vice to get the drain cock off with heat applied. Before I go that route I wrapped the hexagonal nut threads with plumbers tape and re-installed with the "T" wide open. I'm not sure if that will work or not, but it stopped leaking for now.

Does anyone have a recommendation on folks that rebuild water pumps in case I need that in the future?

[Bobby B]

Does anyone have a recommendation on folks that rebuild water pumps in case I need that in the future?

John,
Hi. I would highly recommend Mike Gadaleto @ Cadillac Parts Ltd. for parts or a full rebuild. Good people.....
                                                         Bobby
http://www.cadillacpartsltd.com/index.html

[Big Fins]

Before attempting to remove that valve using heat, which may in turn damage any of the seals within the water pump itself, I would soak it for a week or so in your favorite penetrant or blend of such. Just spray it a few times a day for a week or so. As cold as it is outside, I doubt that you are going to be driving it anywhere anytime soon. Trying this first will also save you from having to remove the pump.