The Stovebolt Site Forums The Shop Area Engine Shop found 235 engine squeal maybe

Took the belt off in the garage (raining outside).
Engine is cool but when I turn the fan blade the water pump squawks. Obviously low speed so the sound is different but there.Sounds like the rubber seal. Pump has no play in it and only has about 300 miles on it. I don't know why it would fail already. I will run the engine without the belt to verify when the weather changes.
It is a shorty pump from Patrick's so I don't know if they will help me out on it or not.
Howard

If you need a short shaft pump, I assume you're using a 55-62 235 in an older chassis. Have you considered using the adapter plate for the 216 pump instead of the modified short shaft pump?

The fan will be in a better location and there won't be the cooling problems associated with the oddball fan position. Since it looks like you're going to need to change pumps anyway, at least consider going with the adapter plate.
Jerry

After 2 years running the 235 in my 52 1/2 ton, The adaptor plate is looking better and better. The location of the fan at the bottom is not ideal. The relocation of the radiator forward and down is not ideal either. You may have found a bad bearing/seal. The good news is the fan is still on the pump. That is about it. I do have a radiator with a 10 inch hole in the center from the same fail. The fan and pulley slid off the shaft when the bearing failed. Not a good day.

I agee the location of the pump is not ideal but being in the industrial pump business for 30 years I can say the later design is more efficient as far as the pump itself goes. My running temperature has never been over 195. However I will consider the earlier pump but do they come with a 3/8 grooved pulley? I did remove the radiator mounting brackets and welded them back on to allow the radiator to drop down and move forward a bit. (a little scary on a new $500 radiator)
Howard

The 1953 216 and 54 235 high mount pump has the narrow belt pulley. If you're familiar with water pump construction, it's not too difficult to modify an off-the-shelf later model pump to the short shaft configuration, since you've already modified the radiator mount. Just press the fan/pulley mount back the right distance, and cut the shaft off to the correct length. Be sure to support the back end of the shaft in the press firmly so the mechanical seal isn't damaged while relocating the flange.
Jerry

I have thought about modifying the off-the-shelf pump but I don't have a press. Do you thing it can be done with a large bench vise? Also it looks like NAPA has the short shaft pump but of course twice the money.
Thanks to you and all who have offered advise.
Howard

Not sure if you have one near you, and they get a bad rap sometimes, but in my opinion it is buyer beware. You can pick up a bottle jack type press at Harbor Freight pretty cheap, especially if all you need is a bench top job. Well under $100. You won't regret having one around. I keep my 20 ton floor model in my shed to save space. I don't use it enough to want to trip over it all the time. I wanna say even that one was only $119 on sale.

Do you have a wood splitter...just sayin'.

Larry W.

Maybe up there you have Northern Tool too.