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Follow-up question on 460 hydraulics

H

Hugh McKinney

Member
Per my previous question about the hydraulic pump apparently not turning on my 460 (with Independent PTO), I have observed that the drive gear that turns whenever the engine is running, is offset so that the gear's teeth are nearer to the front of the tractor rather than the other way around....is that the correct arrangement? It appears that the teeth aren't even contacting one another...that the drive and driven gears are not even coming into contact with one another...could that drive gear be on there backwards? Thanks again, Hugh.
 
I'm thinking the cap screw and washer came off that hold the gear onto the shaft if the gear is far enough forward to not drive pump.
 
I think that might be it too. There is a very large pipe type plug that is just forward of that capscrew....I think I can make a tool to unscrew it and give me some room to work in...you must have some experience working on these?
 
Raised on those babies as I started working for dealer just a few months before they were introduced in the fall of 1958.
 
Well, I found out that the cap screw was tight, but for some reason, the shaft that it screws into, is able to slide almost a half inch forward, so that the gear that turns engine speed, and the gear that is turned by it, aren't even in contact with each other! That is, the middle gear, with 56 teeth, is able to get completely out of sync with the pump gear and the gear that turns with the engine. It appears that it had the seasonal disconnect for that shaft, and that somebody deleted it and put in something that makes the shaft able to move too far forward...I'm gonna go into it some more this afternoon....but I ordered the correct snap ring that it supposed to prevent that forward movement, I just don't see a groove to put it in. Pete 23, could I send you an email so that I can elaborate on what it looks like? Thanks, Hugh
 
With the elimination of the seasonal disconnect,(which very few 460's ever had) I don't know exactly what has been done. The snap ring normally holds the rear bearing in the housing and a roll pin goes through the shaft and coupler preventing shaft from moving forward.
 
Well, the roll pin is definitely in place, but I'll have to look carefully to see if the snap ring is in place. Is the snap ring the kind that fits on the inside facing out, or on the outside facing in? That is, does it fit into a groove wherein it gets smaller when it seats in place, or into a groove where is gets larger when it seats in place?
 
Okay, I think I might have figured it out. Apparently the retainer on the forward end of the shaft is missing. The capscrew is in place, but not the retainer. So although the capscrew was tight, the head wasn"t big enough to hold the gear in place without the retainer. It wasn"t the shaft sliding forward, it was the gear sliding forward on the shaft. Thanks for all the help and stay tuned for the grand finale! Hugh
 
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