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Case Tractors Discussion Forum
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Shaft seals in gear boxes

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Don G.

08-18-2004 17:33:06




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Need Help on a 1969 Case 440, Gasoline, Mod. G148B
Ser. 8359678 - Motor # 2667556

My problem is, when you fill the two gear boxes to their proper dope level and use the tractor for a little while the dope levels equalize from the back gear box to the front box. Of course when this happens the 3 point hitch no longer has enough dope to operate.

About 1 1/2 years ago I chatted with some nice gentleman and they gave me some good advice. I have tried what I thought was their suggestions. I have found one set of seals on the outer shaft going through the transmission and replaced them. That did not help. Looking further to the inter shaft it appears it would need a seal of sort there also. Where would that seal be?

No one in this area has a book going back this far. I am hoping that someone out there can send me a copy of this area of the gear boxes with some numbers on parts.

Thanks,

Don
Decatur, AL

[email protected]

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Dennis/Ohio

08-18-2004 20:13:19




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 Re: Shaft seals in gear boxes in reply to Don G., 08-18-2004 17:33:06  
Don,
I"ve seen posts that guys running same oil in both boxes, drilled a hole between the cases and filled to level of front box. I wouldn"t do that but I would try to keep filling the front box (torque tube) until it was the same level as the over full final drive. Its worth a try?
Best, Dennis.....



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Don G

08-18-2004 21:20:55




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 Re: Shaft seals in gear boxes in reply to Dennis/Ohio, 08-18-2004 20:13:19  
Dennis, Thank you for your response. This may be a good solution. Thanks again Don G



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Dennis/Ohio

08-19-2004 03:36:10




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 Re: Shaft seals in gear boxes in reply to Don G, 08-18-2004 21:20:55  
Hi again,
If you do split your tractor to replace the seal between cases. It could also be the lift cylinder leaking and not the seal at all. Best, Dennis.....



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Don G

08-19-2004 07:16:47




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 Re: Shaft seals in gear boxes in reply to Dennis/Ohio, 08-19-2004 03:36:10  
Dennis, that is a great idea to check and rebuild this cylinder. Thanks, Don G



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Tom (Ks)

08-18-2004 19:02:38




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 Re: Shaft seals in gear boxes in reply to Don G., 08-18-2004 17:33:06  
There will be a pto shaft seal on the main shaft, and a mainshaft seal on the input shaft.This would be above the rear pinion bearing. Have not been there before, just going by the pictures in the manual.



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Don G

08-19-2004 20:04:06




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 Re: Shaft seals in gear boxes in reply to Tom (Ks), 08-18-2004 19:02:38  
Tom, Thank you for the drawing of the gear box and seal locations. This will really help.
Thanks again, Don G



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Don G

08-18-2004 19:18:00




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 Re: Shaft seals in gear boxes in reply to Tom (Ks), 08-18-2004 19:02:38  
Tom, thanks for your fast response. Would it be possible for be to get a copy of this page.
Don G



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Walter

08-18-2004 18:46:31




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 Re: Shaft seals in gear boxes in reply to Don G., 08-18-2004 17:33:06  
Don I've always been able to find any manual I needed on ebay. All the way back to 1940. Might want to give that a try.



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Don G

08-18-2004 19:19:52




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 Re: Shaft seals in gear boxes in reply to Walter , 08-18-2004 18:46:31  
Thanks Walter, Don G



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