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John Deere Tractors Discussion Forum
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Re: 1973 JD 4230 sleeve pulling

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Tim S

03-18-2013 14:18:18

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On an in frame you can block a hydraulic jack up to where a 18" piece of 1 inch round stock will line up on the lower edge of the sleeve and push them out like that,,be ready when the first one comes out,,you will be on the wrong end of a "Flush"...

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DaveH IA

03-18-2013 16:58:35

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 Re: 1973 JD 4230 sleeve pulling in reply to Tim S, 03-18-2013 14:18:18  
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I like to use an early model 4020 load shaft chopped off flat on one end and use the long end of the step on the other end inside the sleeve-- keeps the shaft centered

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Tim S

03-18-2013 17:15:02

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 Re: 1973 JD 4230 sleeve pulling in reply to DaveH IA, 03-18-2013 16:58:35  
I do the same thing Dave,,I have a stack of old load shafts that I use for all sorts of things,,

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DaveH IA

03-18-2013 17:30:43

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 Re: 1973 JD 4230 sleeve pulling in reply to Tim S, 03-18-2013 17:15:02  
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They come in handy don't they.

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Eric Hartman

03-18-2013 15:50:54

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 Re: 1973 JD 4230 sleeve pulling in reply to Tim S, 03-18-2013 14:18:18  
Tim. I have a question for you about this very topic of an in frame overhaul on a 4230. I fellow I have gotten to know the past few years had suggested there were some differences between the piston design on Deere's overhaul kits versus others. The key point he made was the piston design through Deere upped the compression ratio a bit, as well as trueing up the head, made cold weather starting better on the 30 series. Is there any truth to that statement? I remember on our 4630, after the sleeves and pistons were replaced (through a Deere dealership), the valves all replaced, and the head was planed, this cold blooded tractor really changed for the better in its ability to start. You knew in the first couple revolutions of the engine, if it was going to start. It starts quite a bit better than our 4640. One additional note: When in doubt about starting in cold weather, we simply plug the block heater in.

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Cliff Nelson

03-18-2013 17:16:54

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 Re: 1973 JD 4230 sleeve pulling in reply to Eric Hartman, 03-18-2013 15:50:54  
Other sources have increased compression overhaul kits available. Advantage Engine has a Platinum Performance kit that I have been using. Priced less than Deere and I have been very happy with the results. Reliance offers a Hyper-formance kit that I have not tried but have talked to people that have and they like them. Both kits are available from Hy-Capacity among others. If the head is reconditioned properly that will make a big difference to starting also.

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