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Harry Ferguson Tractors Discussion Forum
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Thrust Bearings - TO30 Z129

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Jim Polanosky

11-18-2004 06:12:20




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I'm in the process of rebuilding my '53 TO30 Z129 engine and cannot find any detailed information about the installation of the thrust bearing washers. I'm using a flanged bearing shell on the #1 bearing, so I don't need the inner thrust washer. My parts book shows the front (outer) thrust washer pinned to the block using (3) brass pins. Is that all that's needed, or am I missing something? I understand I'll be adding shims between the Thrust Plate & crankshaft to set endplay.

Any help is appreciated!!

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gshadel

11-18-2004 06:58:50




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 Re: Thrust Bearings - TO30 Z129 in reply to Jim Polanosky, 11-18-2004 06:12:20  
When rebuilt my TO I had a heck of a time figuring that same thing out. My manual wasn't very descriptive at all.
You are on the right track, that washer just sits on those pins on the outside of the block. The shims go over the washer, then the crank pulley pushes it all together when you torque down the crank bolt. That washer will tend to fall off the pins until you tighten-down the crank pulley. Right when you get to the point of closing up the clearance between the pulley, shims and that washer, check that washer to make sure it is sitting on the pins and hasn't spun off. Once you torque down the crank pulley, that washer won't move. I suppose you could try swaging those pins to hold the washer tight during assembly if you want too, but it isn't necessary and might make removing that washer more interesting the "next time" you rebuild.

Check the end play on the crank once you have torqued down the crank pulley. If it is too little or too much, have to pull the crank pulley and add or remove shims to adjust it. Seems like a bit of a pain for adjusting that end play, but it actually don't take too long once you get started.

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Glenn Davis

11-21-2004 15:46:01




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 Re: Thrust Bearings - TO30 Z129 in reply to gshadel, 11-18-2004 06:58:50  
The bearing set I got has two thrust washers with it. I'm wondering if I replace the internal fiber washer with one and set the other outside on the pins. Right now I have both of the new washers on the outside, the old fiber washer inside and all the shims out to take out all the end play but I this doesn't make sense to me. It seems to me like I should be able to set one thrust washer and use shims to move the crank pulley out giving more forward pull on the crankshaft as the crank nut is turned in. What's the right order for this?
This is the first time I'm doing this, so I have lots of questions.

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