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Farmall & IHC Tractors Discussion Forum

300 transmission fluid question

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10-24-2019 20:22:32

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I think this is correct but want to make sure. When you change and add transmission fluid to a 300 Farmall, there are two check plugs on left side of the tractor. Oil should come out both of these holes when it is full if you have a TA and independent PTO, correct? The owners manual says it holds about 7 gallons, but there is no reference on how to be sure the transmission and TA have the correct amount of oil.

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10-24-2019 21:35:23

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 Re: 300 transmission fluid question in reply to 300guy, 10-24-2019 20:22:32  
The TA is separate and fills from a gravity trough and is not drained unless taken apart. The PTO is separate and filled separately. Jim

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10-25-2019 20:54:50

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 Re: 300 transmission fluid question in reply to Janicholson, 10-24-2019 21:35:23  
The owners manual said to drain the big plug between the wheels and also the small one up front just behind the bell housing. So that's what I did. Will it fill from the transmission filling?

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10-26-2019 05:35:41

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 Re: 300 transmission fluid question in reply to 300guy, 10-25-2019 20:54:50  
The TA will not drain, so ignore it, it circulates oil as it runs using trans splash into a trough leading into the TA, then out of a hole back into the trans. The PTO needs new Hytran independently. Drain it and refill to level plug on left side. (not a lot of oil in there) Jim

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