300 water pump

Got to put a water pump on a 300U today. Never did one before. My question is what is reason for the set up it has for the fan? Put everything back as I found it but what is the reason for the set up they use?
 
I couldn't begin to explain why an engineer on the edge of sanity came up with that business, even less that anyone approved its use in production. I would be able to understand and refrain from consoling him if he now resides in Hades and has a fractured vertebra.
 
If you are asking about the springs, they are there to keep the impeller in the proper position without having to carry the load of the fan or belt tension. Probably not a bad design for it's time. By the time the 300s were in production the design was 20 years old at a time when a lot of designs wee rapidly changing.
 
I for one think it is a pretty good design. It is easily and cheap to rebuild. The same basic design began back in the early 1930s on the F30, W30 and T20. The same design was used into the 1940s and 50s on the letter and number series tractors and as a matter of fact, many parts will interchange between them. For example, while rebuilding the water pump on my 1936 WA40, I found the impeller to be severely rusted away. After looking through my parts books I discovered that while the main housing is different on most tractors, the hub, bearings and impeller are the same between many of them. I had a 450 water pump on the shelf that came off a salvaged tractor so I took the impeller out of it to use on the WA40 pump, perfect fit!
 

The pump shaft carries no load and the springs for keeping the impeller in position are external.

I too think it was a good design. Ain't no pump built today going to run for 60 years before you have to repair/replace.
 

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