farmall cub

got a cub with water in the radiator. i need to drain the water. drain plug is an allen head screw; looks like that it is rounded out.

what would you do?

Pull out the block drain or take off the lower radiator hose. If you do the block drain then top off with antifreeze with no water in it

block drain? is it a bolt , drain plug? where is it?

I ended up drilling about a 1/4" hole in the plug.
After the water was out Heated the plug a little and PB Blaster I got it out.

Been years since I have messed with my friends cub but if I remember right it is about mid engine left side and could be a pipe plug or a drain valve

thanks

I don't recall a block drain on my Cub, but it wouldn't drain all of it anyways since the "radiator plug" sits lower than the engine. You could just simply remove the lower radiator hose, this would get a good bit of it out, except for like a couple of cups. Its a PITA to get off though. I just cut mine off, took off the pipe from the side of the block and then reinstalled the pipe with the hose attached, but not clamped down all the way. Once I had time, I drilled the old plug out and retapped for a new one.

another friend suggests that i loosen lower hose clamps, wiggle screwdriver underneath and let water out.

Yes that works well BTDT . But also never seen an engine with out a block drain.

Thats the problem someone has put the wrong plug in there and its probably cross threaded. If you will take a GOOD allen wrench preferred a new one that not seen use drive it in good you just mite be able to remove it. Cut it off at the bend now you have a straight piece drive it in good and use a 6pt socket it could work. Ive got lots of them out that way. You will then need to chase the threads and install a pipe plug with some never seeze on the threads it will come out the next time. Oh the problems when we get an old tractor someone has cobbled up never ends.

I would pull the bottom hose. It will drain quicker too. Hal

Well, my 49 doesn't have one. I just went and loked. My 154 has a drain on the bottom of the metal section that attaches to the block. It drains the whole system, and would most likely work on the older Cubs.

The original plug was a pipe plug. Removing the current plug may involve what Gene suggested. You may have to drill it out or go through any process that has been previously discussed for removing broken bolts etc.

I wouldn't want to try drilling up through a plug that is holding water, so you probably still want to drain it otherwise before drilling. That brings you back to the lower hose. The loosen and screwdriver suggestion will work (although may be slow). You will probably need to replace the hose after doing that, so you might as well remove the hose to begin with. Easiest way to remove the hose is to remove the elbow from the block. Easiest way to remove the elbow is to remove the starter. Of course, water will start draining out (and go everywhere) as soon as the elbow is pulled loose from the block.

There is no block drain. Many engines, literally millions of them, don't have block drains(mainly those with no water pump). They aren't hard to see. By the way, dumping straight antifreeze in where there is already plain water is a recipe for disaster. They don't just mix by themselves. With no water pump, there isn't much else to make them mix either.