Re: Water pump

Posted by ScottyHOMEy on March 16, 2010 at 19:21:06 from (70.105.250.190):

In Reply to: Water pump posted by S/C Bob on March 16, 2010 at 18:17:39:

To the question, yes, you can. It bolts right on (new gasket!) in place of the inlet between the lower radiator hose and the crankcase. Parts *required* are a longer belt and a new brace for generator -- the replacement will have an irregular arc to it that would remind you of a sickle instead of the straight, flat-stock arm that suffices for the original. OEM sells the one required.

To Andrew's very good question, what are you trying to accomplish? The thermosiphon of the 113 in the A/SA/B series is an incredibly efficient cooling system. I can recall back when my BN was a working tractor and would spend days on end cultivating beans and corn. What you heard from the house was not the exhaust, but the howl of the fan. When working properly, that system will keep a tractor working hot all day. And if you shut it down, you won't want to lay so much as a finger on the upper tank or the radiator, but will find that the lower tank will be warm but quite comfortable to the touch. If yours isn't behaving like that, I'd hazard that a good cleaning of the system of sludge and scale would be of more benefit than a water pump.

I mentioned *required* parts up above. If you add a water pump you will have forced instead of convection circulation, meaning that your coolant will be flowing constantly, instead of at the measured pace that results from the convection of the thermosiphon system. Did you ever have a vehicle that suffered from a thermostat stuck open in the winter? The motor would never warm up and you couldn't generate any heat. The 113s are slow enough to heat up (see posts about temp gauges that folks think aren't working properly) just as they are. With a water pump installed and in the absence of a thermostat, you'd have to work a Super A to the point of abuse to ever get it up to operating temerature. Somewhere in my foggy memory, I think I've seen a reference to some aftermarket goods that would allow you to place and hold a thermostat in the upper neck, but it's foggy enough I have no recollection of the source for them. The Super C, the Super A1, and (I think) the very last of the Super As that came with a 123 and water pump also had taller radiators, and the outlet from the head to the radiator (which was machined to retain a thermostat) were of a different geometry that will not adapt to the 113 with the shorter radiator.

If your ideas about a water pump are because your tractor is overheating, I'd suggest you'd be surprised if the problem isn't either alot of sludge in your system (a good mechanical and chemical cleaning will fix it) or your ignition timing (too far retarded and you'll have fuel burning in the head instead of the cylinder) leading to overheating.

If you simply like the idea of a water pump, it can be done, but I'd stongly suggest finding a thermostat and a way to rig it into the upper neck if you decide to go that way.

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