[AT] Help please with old JD power steering pump

[John Wilkens]

Any of you guys familiar with the old John Deere power steering 
pumps?  I have a John Deere pump (#A4754R--one of the casting 
numbers) that installs between the governor and the mag and fits the 
older JD tractors.  Are there any parts manuals that cover these 
pumps?  I am missing one part--the "key" that fits between the 
governor and the pump and I don't even know what it looks like.  If I 
can't find the part I'll have to attempt to make one but I need at 
least a photo or diagram.  Any suggestions for me?     Thanks,   John W.


                    In the wide-open spaces of NE Oregon