Smokey has a leak

Wed Oct 17, 2012 4:26 pm

As you may remember my poor ol Cub has had a radiator leak. Well I broke down and bought a new radiator, one of those really nice ones from Ireland. So I'm all set to replace it and I notice several spots of brass on my radiator lower tank/steering gear casting. I examine it a little closer and I can see some other kind of filler right where the radiator bolts on, as well as a hair line crack, and to top it off (so to speak) the casting around the drain plug at the bottom is partly broken out!! I could probably repair the drain by grinding off what is left of the threads and brazing a new bung into it, and I could probably redo the the old brazing job on the top side, but... I have a bad feeling it may not have been the best casting to start with. So with that in mind I'm hoping one of you guys has a donor/parts F-Cub with a good lower radiator/steering gear casting on it. ...or any other good ideas. Thanks in advance for any help!

Re: Smokey has a leak

Wed Oct 17, 2012 4:31 pm

You should have no problem finding a replacement casting. Place a want ad in the For Sale/Wanted forum.

Re: Smokey has a leak

Wed Feb 13, 2013 9:50 am

I've been working on ol' Smokey, it's been a slow process. I got the "new" lower radiator housing and it's generally in good shape but not without a problem. It seems the PO wad issues with the coolant drain plug as well, the head was rounded off. I squared it up so I could get a bite with a 3/8" square socket. I twisted the nub right off :shock: even with heat and Blaster, to no avail I tried to spin it out with a blunt chisel, stuck solid. I thought - :censored: , I really didn't want to drill it out, but that's what I ended up doing. I had to drill it out to nearly the size of the tap drill size before it budged.
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To repeat myself from an earlier post... This all started out because I needed to replace the radiator on my Cub. A number of months ago I found and ordered a new radiator, made in Ireland, and looks real nice for $180.00. I took the hood off ond proceeded to drain the radiator (I haven't done that since I've had the tractor) and found a chunk of wood jambed into the drain hole with a bunch of sealer gobbed around it! The casting was broken out where the plug should screw in. Up to that point I thought it was just covered in grease and grime. Upon further inspection, the top of the housing had a bunch of braze and filler as well as a number of hairline cracks where the radiator bolts on. I attemped to clean the brass off to get an idea of how bad it really was, I ended up with a few pieces of the casting in my hand. To my amazement that particular area never leaked.
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The area around the shiny spot had several hairline cracks which were brazed and liquid weld as a filler.

The new casting is from a newer Cub and has the reinforcing rib behind the tank.
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I scrounged up a 3/8" brass plug so hopefully the next time I won't have these issues.
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Now I'm on to replacing the front seal with a speedy sleeve.
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