52 H engine overhaul

Robin Hood · Jul 19, 2012

Would appreciate any insight you can give me as we are about to tear it down. One question is whether or not the sleeves must be pressed out, or will they come out easy.

Any other info to help avoid "trip-ups" would be much appreciated.

Thanks

Andrew Z · Jul 19, 2012

you need a puller to easily remove the sleeves. Just search in the archives on 'rebuilding H' and you pull up hundreds of replies on this topic.
Also a manual is a must need.

Andrew

sflem849 · Jul 19, 2012

Andrew is dead on. Google will yield a lot of results (most in YT) Ignore the "My Tractor" forum results.

Other most important thing is to have a bearing splitter for pulling off the crank pulley. Start putting penetrating oil on the little set screw now.

Zachary Hoyt · Jul 19, 2012

I have driven sleeves out using a heavy wall pipe slightly smaller than the bore and a sledgehammer. I turn the block upside down and get it up on wood blocks so there is enough clearance to drive them out. On the crank pulley I have never had one that I was not able to remove pretty easily with a lever on the 6 I have had apart.
Zach

The Red · Jul 19, 2012

Here you go. I have seveal pictures with text when I did an inframe rebuild on a 1951 H back in 1999.
The Red Fritz Farm

El Toro · Jul 19, 2012

If that engine has a lot of wear time on it I would pull the engine and tear it down completely. Take pictures and make notes. Separate the parts as you remove them. Use cardboard boxes and mark the box where it was removed. Saves a lot of time during the reassembly.

Pull the crankshaft and have it measured for wear at your local auto machine shop. Buy your bearings from them. Pull the camshaft and check the lobes for wear also have new cam bearings installed. If you have a problem removing the sleeves have the machine shop to press them out and new sleeves in. Take the head along and have the valves ground. If the valves are getting thin I would replace them along with new springs. Hal

Anonymous-0 · Jul 19, 2012

I rebuilt a Case VAC engine last year. Did a top to bottom rebuild. First engine I ever rebuilt. As I disassembled everything I put it in zip lock bags and labeled it with a sharpie. Even if like parts looked interchangeable I separated and labeled them individually. Made notes and drawings of left, right, top, bottom, up, down, cylinder number, etc. When it came time to reassembled every part went back in the same way it came out. The problem is that the time from take apart to assemble is a few weeks between machine shop work and getting all of the parts lined up. You forget a lot in a couple of weeks.

big a · Jul 19, 2012

All good advice above. Only overhauled 3 H's, but one thing I have noticed on all of them I had apart, was that the thick washers under the rod bolt nuts were cracked radially. Not all of them, but a few on each engine.
I sourced new ones from a local machine shop, as a failure there could be catastrophic.

Anyone else ever seen this? Seems like the weird stuff always comes my way!

Also, I'd pull then engine and really do things right...cam bearings and recondition rods.

52 H engine overhaul

Robin Hood

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Andrew Z

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sflem849

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Zachary Hoyt

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The Red

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El Toro

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Anonymous-0

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big a

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