Thanks for all the replies on this. I pulled the pump off tonight and found the part number. It is a cessna pump, numbers I found were B24307LAQ. Not sure the significance of the last 3 digits.
I took the calipers out to measure the shaft. .685" or 17.39mm so 11/16 and it is keyed.
I am in the process of removing the loader, the tractor needs a clutch which is the first priority.
There are some markings on the seal but hard to make out the full number, so far all I can find are large kits which may exceed the cost of replacing the pump. I might try and contact one of these companies to see if they can just get me the seal and not a $300 kit. If a seal does not resolve the problem then I will just do a new pump. No idea how many GPM this pump was rated for. Pumps from Princess Auto (canada) are all 3/4" shaft.
In the second picture you can see the seal is half missing, so like the previous owner said it was just dumping fluid from the loader into the transmission.
If people are interested, I will keep this thread going. Never split one of these old tractors before. Like I said it needs a clutch, not sure if just a disk or the whole package. I suspect is going to be really bad. The loader covers the inspection plate but I know its needs to be split. I was thinking maybe the loader dumping so much oil into the transmission got onto the clutch? Maybe wishful thinking.
All the cylinders on the loader are leaking, some of the hoses. All look ripe. The dash is dead, I have bench tested the tach and temp gauge, they seem fine. Tach cable is mia. The fuel gauge is stuck.
Tomorrow I am building a support to hold the loader as I remove it.
Cheers.
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