Last summer I was riding my John Deere 1959 530 around my neighborhood in lower gear (why I don’t know) when my tractor stalled and white smoke came out of the muffler and it looked like other places but it happened so fast I don’t remember. I did NOT try to turn the engine over at that time. Also, just after this happened, I spent two months in hospital and I have not been able to work on the tractor until now. I thought I had blown a head gasket but upon checking the compression I found I have around 150 on a cold engine. I assume the head gasket is good. I, being a novice at repairing John Deere tractors did notice when cranking the engine that the fan was not turning. So my question is “is the fan to turn when the engine is turning”?
I would recommend getting a service manual for your tractor if one exists. Not sure if Deere ever printed one for the 530 or just relied on the "50" series manual to cover the 520/530 tractors too. The procedure for gov. and fan shaft repair and set up should be well explained in the manual. I have no experience with a 530, but think the gov./fan assemblies are similar to the late B tractor. The gov. gear to fan shaft gear mesh is very critical for longevity and minimal noise. If you can get a good used gov. shaft assembly, you would want at least the mating fan shaft gear from the same tractor. Or if the gov. gear you have is not damaged, it should be assembled to the new/used gov. shaft to match the original fan shaft gear mesh. The fan shaft assembly gets shimmed to adjust the mesh and gear backlash to the gov. assembly. A brand new gear set, if available, requires the same setup and shimming, but will not have a worn surface to contend with. Clear as mud, yes? lol
Check out Antique John Deere Parts replacement by Davenport Tractor for manuals, as well as Deere.
Do you have any pictures of the broken shaft? Was there any other damage? Could there be any broken pieces that have fallen into the crankcase?
Good luck with the repair. Sure would like to own a 530!
Hopefully I was able to attach some pictures of the broken shaft and of my tractor on general. The shaft break was clean.
I found one half of a snap ring when I took the governor off. I don't know where the other half might be. I see where one tooth of one gear is chiped and the gears are worn.