Thought I would try to tune the 48" deck today while it was off. There's always a surprise when you look at a new-to-you piece of older equipment up close for the first time, eh? There is more welding needed here than I had previously thought, but that's not the part that concerns me.
I found one damaged spindle, and, possibly prematurely, have ordered a replacement, but I'm a little mystified by what is happening with the spindle pulleys. According to the parts lookup, the manuals, and some quick and dirty research, the left blade pulley should be 4.62" OD (IH-489394-R2, 756-3008), the right blade pulley should be 4.86" OD (IH-481095-R92, 756-3026), and the center pulley should be 5" (IH-489395-R2, IH-489395-R3). Well, my center pulley is 5", but both of my left and right pulleys are 3.88".
From the notes I have, it looks like a parts counter guy convinced the previous owner that this was a smaller deck than it really is, possibly leading directly to the mounting of incorrectly sized pulleys. Is there any good reason why anyone would want to spin the two side blades faster without increasing the speed of the center blade?
Also, please take a look at these two pictures, and tell me if you see anything weird. I'm curious why I have a grease fitting on the idler pivot that is not mentioned in any literature that I can find, and I'm also concerned that perhaps the spring pin assemblies and the steel plates beneath them aren't supposed to be sandwiching the deck material, instead of being stacked on top of the deck. In my mind, it would make more sense for those plates to be under the deck and providing support. The way it is now has allowed the bolts to start pulling through the deck.