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G Fan Shaft

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Duben

01-13-2001 17:25:56




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I'm tearing down my "G" and saw in the I&T manual that the fan shaft and governor should be removed as a unit. Can just the fan shaft be removed? There seems to be an oil leak where the fan shaft joins the governor. Is it necessary to even remove the governor? I plan to pull the head and block - first time experience for me. Any ideas or things to watch for would be appreciated.




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Gman

01-14-2001 17:32:16




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 Re: G Fan Shaft in reply to Duben, 01-13-2001 17:25:56  
Duben--you should remove the fan shaft and govenor housing as an assembly,because the fan shaft willnot go foward enough for gears to clear govenor housing,you could remove radiator or take the two big bolts that holds the radiator the tilt it the fan shaft might clear then.It's no big deal removing govenor housing the oil line is a little difficult. When you go to disassemble observe the crankshaft an cam gear marks align these marks,then go up and remove the little cover on govonor housing and observe where the marks are at, they should be at 6-oclock on cam gear jot down where these marks are,then unbolt and set it over in the floor,now that wasn't so hard. The govenor should be diassembled and gave a through cleaning and replace bearing if needed. The govenor uses the same bearings as the fan shaft,ballbearings.Disassembling that fan shaft is tricky,so be careful when you compress the fan assembly to remove those keepers that you don't break that little pot metal clutch assembly,there is another thing I neglected to tell you was when you seperate the fanshaft from govenor housing count he paper shims,the fan shaft and govenor gear has to be properly shimed or it will howl.Hope this helps Gman

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luckydog

01-15-2001 06:23:24




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 Re: Re: G Fan Shaft in reply to Gman, 01-14-2001 17:32:16  
To Duben and Gman-- Sorry I should have been more loose with my info. Gman told the correct way to go if you choose that path. luckydog



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Duben

01-14-2001 19:49:32




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 Re: Re: G Fan Shaft in reply to Gman, 01-14-2001 17:32:16  
Thanks for the info, Gman. Never done this before so it's all a real big deal! Is there any reason to disassemble the fan shaft? Plan to bore it & put in high compression pistons along with a pulling carb. Want to be able to use the GW for things other than tractor pulling, but would like to give it some extra "grunt" for pulls. Also, I have a leak just where the tractor splits right in front of the rear axle - right side by the front of the hitch. Any easy way of fixing it? Again, thank for the help. Duben

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burns

01-15-2001 12:12:26




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 Re: Re: Re: G Fan Shaft in reply to Duben, 01-14-2001 19:49:32  
Duben did you ever rotate the fan back and forth to determine how much rotation there is before the bevel gears mesh? An inch would be an acceptable limit that I usually use as a quick measure. I thought whjile I had my G apart I would change all of the bearings and bring everything back into tolerance. $400 later I was done. The mechanic broke a gear on the press plus the other parts/labor. I would do it again because there was a lot of wear.

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Larry E

01-16-2001 09:02:18




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 Re: Re: Re: Re: G Fan Shaft in reply to burns, 01-15-2001 12:12:26  
Should be 1/2'' play at end of fan blade.no more no less.



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Bus Driver

01-14-2001 17:48:46




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 Re: Re: G Fan Shaft in reply to Gman, 01-14-2001 17:32:16  
Gman, I have a 1935 B that I hope to get started on one day soon. Does the same advice you just posted apply to the B as well? Thanks for helping me.



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luckydog

01-14-2001 06:15:15




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 Re: G Fan Shaft in reply to Duben, 01-13-2001 17:25:56  
Duben--You don't have to remove either fanshaft or govn.housing to remove the head or the block. It will give you more space to work with if you do. I would take the fan shaft out and replace the packing and gasket if it was leaking. Would not take govn.housing off unless you would have to. Make sure you get fanshaft lined up when you put it back on. Might want to check all the oil lines under the govn.housing when you have the block out, make sure they are tight and clean out all the crankcase. Have fun luckydog

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