Farmall Cub Forum -- Questions and answers to all of your Cub related issues.
Wed Oct 24, 2012 9:20 pm
So...while putting the '65 Loboy through its rehab paces, I patched up the overflow tube with a new one and all of a sudden, I now have overflow out the tube.
What level can I expect the radiator to get down to cold before it quits pushing water out the overflow? Halfway down the top tank?
I just fill the tractors and let them burp out the excess, but this one seems to have an excessive case of the burps....
Wed Oct 24, 2012 9:38 pm
Most of them settle down around an inch below the neck. Of course that depends on whether you are heading with the front end downhill a lot. They like to seep a bit that way as well...
If it gets REALLY excessive, then it could be other things like a head gasket... Not likely if the head hasn't been off or messed with...
Wed Oct 24, 2012 9:51 pm
ntrenn wrote:I just fill the tractors and let them burp out the excess
Can't go wrong or waste coolant by doing that. Once the excess is purged and you have no leaks, you'll always find the coolant well below the neck, usually visible on either side.
Wed Oct 24, 2012 10:29 pm
Thanks guys...on both tractors, the level is below the pipe and I have to reach my finger around it to gage the level - so when the '65 stops burping, I'll see where it ends up compared to the '63. I'm actually thinking about putting an overflow reservoir on it...
Wed Oct 24, 2012 10:44 pm
The important thing is that when it stops "burping" does the coolant remain at the same level when you check it before use each time or does it continue to go down. I have a cheap 99 cent flashlight hanging near the cubs for the sole purpose of shining in the radiator to see the coolant level.
Thu Oct 25, 2012 7:01 am
Flashlight? How simple a solution to the age old question. How high is the water. Wish I would have thought of that!
Thu Oct 25, 2012 4:39 pm
Thu Oct 25, 2012 7:42 pm
The thought on a reservoir on it I don't believe will work other than catching the excess to let you know how much was pushed out. I don't believe it will work exactly as a automobile does with a higher pressure system and a water pump continuously moving the water. All in all most settle down to a comfortable level and stop pushing water. Run the cub a bit and check the air coming off the fan to make sure it's relatively cool and you can also feel the front of the radiator to make sure it's running cool and not excessively hot. As always use causation when touching potiently HOT things
Sat Oct 27, 2012 9:38 am
I made a simple overflow bottle hooked to the overflow tube. When I fill the radiator just to get fluid to the top of the neck, it bubbles out about 12oz under a normal workload, 18oz in really hot weather and a long work day. Once that is boiled out, it doesn't lose any more unless I refill it. Dale.
Sat Oct 27, 2012 12:18 pm
Claycomb wrote:I made a simple overflow bottle hooked to the overflow tube. When I fill the radiator just to get fluid to the top of the neck, it bubbles out about 12oz under a normal workload, 18oz in really hot weather and a long work day. Once that is boiled out, it doesn't lose any more unless I refill it. Dale.
What's the purpose of the overflow bottle? It won't go back into the radiator.
Why would you refill it? It has already reached it's proper level.
Sat Oct 27, 2012 2:56 pm
Denny, when I bought my cub the PO told me to always top it off before I used it. After a while I got tired of buying anti-freeze so I put on the overflow bottle, filtered the overflow and reused it. Why refill it? I'd just rather be safe than sorry. Dale.
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