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AC-B How bad could this be?

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JAE-Tx

04-30-2001 15:34:46




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Changing the fluids in a '38 AC-B this weekend, and my manuals are nowhere to be found.

I put 80-90 geal oil in the trans/diff housing, just like in my other tractors. Got back in town and double-checked, and the manual calls for 20wt.

How bad could this be for my Allis? Thanks for any help.




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steve

05-01-2001 17:16:49




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 Re: AC-B How bad could this be? in reply to JAE-Tx, 04-30-2001 15:34:46  
the small B and C tractors have a common oil cavity behind the engine clutch. The transmission, rear axle (differential), pto cavity and hydraulics are all tied together with the same oil. In the beginning AC put 90 wt gear lube in them. When they added the hydraulics to the tractors, the gear lube was too thick so they satarted using 20 wt engine oil. Now a days your best bet is to use hydro-transmission fluid like most new tractors use. it is non foaming, etc. If you have 90 wt in the system, it will be o.k. if you do not use the hydraulics. Flush out real good when you change to hydro-transmission fluid. There are three plugs underneith and 1 plug on the transmission left side to fill.

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Dave in Mo

05-01-2001 04:24:45




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 Re: AC-B How bad could this be? in reply to JAE-Tx, 04-30-2001 15:34:46  
Same thing happened to me. I've got (2) different manuals for my WD and guess what. One calls out for 20wt for the tranny and another calls out for the 80-90. I think logically that the 80-90 is the best because it contains sulphur (and cost more) for high pressure gear applications which is what that drive really is. 20wt is a good all around oil used for the engine and hydraulics. A/C recommends very frequent oil changes.

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Tom

05-01-2001 17:53:10




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 Re: Re: AC-B How bad could this be? in reply to Dave in Mo, 05-01-2001 04:24:45  
The only reason to use 20 weight in a wd transmission is if the properly adjusted hand clutch slips. It is not part of the hydraulic system.



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Tseifert

04-30-2001 17:12:07




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 Re: AC-B How bad could this be? in reply to JAE-Tx, 04-30-2001 15:34:46  
If your tractor has hydraulic , I would drain the tranny (2 Plugs I think) and refill with hydraulic/tranny oil 20wt. Heavy oul will make the hydraulic work slooow. Wait for winter and it will be really slooooow.

Ted



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Tom

04-30-2001 16:48:14




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 Re: AC-B How bad could this be? in reply to JAE-Tx, 04-30-2001 15:34:46  
20 only if it has hydraulics, then non detergent, otherwise you did fine. Don't forget the final drives, 90 weight there.



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JAE-Tx

05-01-2001 06:47:39




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 Re: Re: AC-B How bad could this be? in reply to Tom, 04-30-2001 16:48:14  
Thanks guys - Tom:

This little AC is new to me. What do you mean "final drives?"

I've got hydraulics, but they're plugged for now (no use for them just yet). So I can leave the 80-90 in the trans/diff.?

Thanks for your help.



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Dave Grubb

05-01-2001 07:28:32




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 Re: Re: Re: AC-B How bad could this be? in reply to JAE-Tx, 05-01-2001 06:47:39  
The final drives are the left and right rear wheel axle housings at the wheels. They are gear reduction drive units. They have a filler plug located on the inner surface several inches up from the bottom of the housing. You fill the the housing to overflow with gear oil as recommended in the operators manual.



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Tom

05-01-2001 17:55:39




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 Re: Re: Re: Re: AC-B How bad could this be? in reply to Dave Grubb, 05-01-2001 07:28:32  
To drain them you have to take them off though.



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