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630 fan shaft


 
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rick deere
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Joined: 25 Dec 2010
Posts: 1987


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PostPosted: Tue Dec 05, 2017 3:17 pm    Post subject: 630 fan shaft Reply to specific post Reply with quote

My fan shaft is leaking at the governor housing is this easy to fix or do I need to take sheet metal and radiator off??? If someone has done this please tell me what intails. thank you
 
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PJH
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Joined: 26 Apr 2009
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PostPosted: Tue Dec 05, 2017 7:12 pm    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

That is a shim pack. Don't be reckless with it. I'm watching for answers - mine leaks a little too.
 
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rick deere
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PostPosted: Wed Dec 06, 2017 4:02 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

I think there might be a o ring in there
 
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Mike M
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PostPosted: Wed Dec 06, 2017 4:54 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

An o-ring where the tube meets the ventilating pump housing,then a gasket between the vent pump section/sections ? and then shim gaskets where it all mates up to the gov. housing. That is some major work to get that all torn down. If it is just leaking where the tube goes into the first casting maybe clean it up super good and try some JB weld or something around it ? If you do take it off make sure to save the shim gaskets for reuse or to measure the thickness to match up NEW ones.
 
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PJH
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PostPosted: Wed Dec 06, 2017 7:55 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

Yes, you're right Rick - I first thought of the vent pump/governor housing connection.

Changing that O-ring is a big job.
 
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rick deere
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PostPosted: Wed Dec 06, 2017 4:18 pm    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

does radiator have to come off?
 
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Mike M
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PostPosted: Thu Dec 07, 2017 5:20 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

Some have more room to get the power steering pump moved forward than others. Depends on the radiator core thickness. If I was to go that far in and remove the fanshaft I'd also rebuild the power steering pump while I was that close unless you knew it had been done before ? Those seals get rock hard in them.
 
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Kent Petersen
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Joined: 20 Apr 2011
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Location: Madison SD

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PostPosted: Thu Dec 07, 2017 10:08 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

there was not any o,rings used on the fan shaft housing if it is power steering model look it up in JD parts
 
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ET
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PostPosted: Thu Dec 07, 2017 10:31 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

That's what I was thinking.
 
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Mike M
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PostPosted: Thu Dec 07, 2017 10:42 am    Post subject: Re: 630 fan shaft Reply to specific post Reply with quote

I vaguely remember something to that effect. Wasn't sure if all the later ones or only the really late ones ? If his doesn't have one and it is leaking there then he has even bigger problems ! It will have to be marked or tacked ? and then brazed or welded when its apart to seal it up for good. I have had a few up at the power steering pump end in the past I did this to guarantee no leaking.
 
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