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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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Oliver Newbie...... a PTO shaft Question

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CJDave

01-01-2004 06:09:12




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On Friday I will be helping my neihbor pull the engine/hydrapower assembly out of his nice 1650 gas model. I know the PTO shaft has to be slid back quite a ways to clear the chain coupling, but it isn't completely clear as to which assemblies in the rear of the tractor have to be unbolted before we can do that. My other question is: will be have to shim the engine and dial in that chain coupling to get it realigned once we've had the engine out and then back in? Or does it hold alignment pretty well over the life of the tractor? We have to fix a noisy and dragging pilot bearing. We'll change the crankshaft rear oil seal while we have it apart, and check all of the clutch fingers and the throwout bearing too. I grew up on John Deeres, but to be thruthful about it; I never drove an Oliver I didn't like. This 1650 is one heck of a fine older tractor. Thanks in advance for any tips on doing this upcoming repair.

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CJDave

01-01-2004 19:11:26




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 Re: Oliver Newbie...... a PTO shaft Question in reply to CJDave, 01-01-2004 06:09:12  
Thank you VERY MUCH for the great step-by-step. We've stripped everything off the tractor and have removed that round cover on the PTO, but from there it was not real obvious to us what to do next. Your instructions dovetail nicely with what I observed..... the outer snap ring, and the slots in the clutch drive piece. We just couldn't quite figure out what was actually holding the shaft. The tractor DOES have a bolt down below to put pressure up on the two-speed box..... I wondered why; now I know. Thanks again; you've made ace Oliver mechanics out of us..... and we'll definitely install a new throwout bearing while everything's apart.

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B A Star

01-01-2004 10:21:50




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 Re: Oliver Newbie...... a PTO shaft Question in reply to CJDave, 01-01-2004 06:09:12  
If you are going that deep into the clutch, don't just check the release bearing, replace it with the pilot bearing.



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ajax implement

01-01-2004 07:37:10




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 Re: Oliver Newbie...... a PTO shaft Question in reply to CJDave, 01-01-2004 06:09:12  
The only thing you will need to unbolt is the "round " cover that covers the top shaft. This is held on with 4 - 5/16 inch cap screws. You will also loose about a pint of oil so have a pan ready when this cover comes off. You will then see the PTO clutch. You will also see a small external snap ring, let it on. However, You may need to turn the output shaft. There are two slots in that clutch hub. Turn the output shaft until you see the ears of a Tru-Arc snap ring. It has to be popped out of the groove. Just let it hang once it comes out of the groove. Then snap the PTO in the engaged position. That way the plates will not fall down when you slide the PTO shaft out. It will come out with ease if you use a 36 inch carpenter's wrecking bar and use the PTO housing as a pivot point on the bar. You only want to catch the edge of the hub where the plates ride in. Questions? If it does not come out easy double check everything andmaybe ask away . In other words you do not need to use brute force.
On the engine alignement. You will note there are two different size bolts used to hold the engine in the frame. Mark them and put the same size bolt back in the same hole. The Hydra power & Over under units tend to sag with time. Once you have the unit out, drill and tap for a 1/2 inch mimimum prefer 5/8 inch cap screw so you can thread that in and use it to level the unit. 1750's and up had the hole in the frame. 1550 & 1650 series did not. Get yourself a good lifting eye from some industrial supply house. or fabricate a bracket, That is why there are long head bolts with threads behind the manifold. Also later on Oliver released pilot bearings with high temp grease. Use it, it will give you longer life.
Questions?

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