Water pump........ Again

I posted a thread about my water pump on my jd50 bout a week ago. Got rebuild kit ordered and installed and water is still pouring outta the pump from a hole in the pump housing. I know I know I wasn't thinking. But this hole has to be a factory hole of some sort. It's not a crack or busted type hole it's a symmetrical hole. So as I was sitting on the toilet where I do my best thinking I thot that maybe it could be some sort of freeze plug. Can anyone verify this thot. It's a 55/56 year model model 50. Thanks guys!!!!!!

no freeze plug you should have bought a already rebuilt pump to start with would have saved money in the long run. you've got to put everything in just right with some grease. Sometimes you get lucky sometimes you don't. good luck.

There is a problem with the seal. The porcelain seal rides against the cast iron housing. The seal surface on the housing is grooved from the old seal. You need to take it apart and have that surface machined smooth.

Did you replace the impeller? I remember maybe you, talking about a rebuild kit and everybody's view, I would have mentioned to you to buy a new waterpump, but everybody said to rebuild, which is fine, until you need the expensive impeller which turns the table to rebuild or replace. Also its a weep hole that tells you when the seal is leaking. chris

Some later models used a pump with a small round hole with an o-ring groove cut in it and a by-pass pipe goes in there. That pump is also a replacement for the earlier models that do not have a by-pass pipe so the hole needs plugged. So I wonder if this is what you have going on ? The seal weep holes are there too but they are normally an ill regular hole cast in.

The hole is supposed to be open.

Two things - I can't remember the exact details, but some or maybe all of the pumps had a fragile device that had to be positioned correctly as it was pressed into the housing. A dab of grease will help you hold it in position, and after you get the press done, you should be able to rotate the shaft very slightly and feel/hear the little device (I want to call it porcelain) touch the edges of the notch that it sits in. If you have broken this little piece, you'll have to start over. It's a little tedious, and most folks don't want to fool with rebuilding them.

Second thing - how much have you ran it since putting it back together? I know the impellor is an issue, but sometimes it will "wear in" after you've ran it for an hour or so (watching the coolant level). I've done this twice on my 630, both times thinking I had screwed something up, but after an hour or so the weep hole leak slowed to nothing and remained at nothing for a decade or two. (I've rebuilt the pump twice in the 40 years I've owned it) If you think you haven't broken something pressing it back together, you could fill it with water and try running it for awhile. What have you got to lose at this point (watch the coolant level!)? By the time I had fed three round bales, mine had slowed to a drip, and in another half hour or so it had completely dried up. Did I mention to watch the coolant level?

The early water pumps use the seal with two ears on the porcelain seal ring that get broke if you aren't careful. Guess how I know? The seal on these water pumps is made by two very smooth surfaces(one is porcelain)that are held together with a spring. Any imperfection in the surface can make them leak.

You can get a water pump from YT for 128.00 bucks and save all the headaches.

Yesterday's tractor???

<a href="http://www.yesterdaystractors.com/cgi-bin/store/model_parts.cgi?SearchArea=John-Deere&&md=50&cat=Cooling%20System&r=mcats" target="_blank">Up Top, Left Side, look for Tractor Parts, drill down</a>

You're right - the 630 uses a bellows seal. I don't know when they made the switch.

I know about breaking those porcelain ears - probably for the same reason that you know, ha.

I don't know if the porcelain piece will wear in like the other one.