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Well I aquired another project. looked interesting to me and I wanted to save itpost-113851-0-21775600-1454690617_thumb.

I paid $500 for it, does not run but turned over with battery and hand crank

I am assuming that I will drain all fluid and start over to be safe

does anyone out here have any experience with restoring one of these units???

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That's a nice straight power unit. I hope you can get it running easily. Any idea what it was used to power? I would love to find one.

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nice u4. I have one under a tarp that turns over but I haven't got it running just like yours. I thought it would be cool to have but now that I have it I don't know what I am going to do with it once it runs

They are the same as an H or w4 engine so theres nothing special about restoring it

Good luck with it when you get it running

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This particular unit was being used for irrigation purposes. Until fuel started to go out of control about 7 years ago. I already removed the centrifugal pump. I think I would like to put on belt pulley but not sure how fast it turns yet.

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Does anyone know serial number codes to Power units? UBH 16849

Looks like 1948

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If you are referring to belt pulley RPM, I don't think it is crank speed? I did the math a couple of times but keep forgetting it. Somebody in the know can post on that one.

My experience with power units is only with the larger 9 and 18 diesels, but they seem to run a specific load speed according to intended use. Some are faster, some slower than stock. How does the throttle work on that one? Mine had off, idle, run.

They are usually in great condition compared to a tractor engine.

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that power unit looks like it only has a clutch on the back of it so it would be crank speed. my U4 has a gearbox on the back of it

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That's what I was afraid of, I may have to find a gear box that fits. I wander if an H or W4 unit might work??

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hillman can you post a picture of your gear box

Thanks!

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post-36945-0-55314400-1458000563_thumb.j

I don't know what you want to drive and at what speed but its not that hard to reduce the speed using a larger driven pulley

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Is that an actual gear box?

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I want to install a typical belt pulley for a saw

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Is that an actual gear box?

its a transmission which is a gearbox

A belt pulley attachment from an H or W4 is of no use to you. they are transmission driven.

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So I am starting this U4 project 

 

Here's the before 

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Stripping it down tonight 

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Gonna need a new one of these 

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Radiator looks good 

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I think I'm going to change to a distributer 

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Doing some electrolisis 

 

Old school 

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I would use one of the power units to run my Hobart Bros. welder head

[300 amp DC] the 16 hp vanguard does ok with  3/32 rod ,,struggles with 1/8''

Mike

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