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John Deere Tractors Discussion Forum
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Trans drain plugs in a 51 B

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BB in Pa.

11-16-2004 14:03:15




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I"m draining the gear oil in my B"s diff and trans there are 3 drain plugs, one in the diff, one in the trans and also a smaller 1/2" plug in the trans, when I took the smaller one out of the trans all that came out was a couple drops of clean water. What is the smaller plug for?
Thanks,
BB




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Mike M

11-16-2004 18:35:51




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 Re: Trans drain plugs in a 51 B in reply to BB in Pa., 11-16-2004 14:03:15  
If my memory is not totally shot ,I think that is a plug under the pto shifter shaft hole .



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Maark

11-16-2004 15:51:21




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 Re: Trans drain plugs in a 51 B in reply to BB in Pa., 11-16-2004 14:03:15  
The plug that is towards the front of the tractor will drain the crankcase,the middle one drains the trannycase and the rear one will drain the axle assembly that won't come out from the tranny. You may want to make sure that the drain holes are open and not covered with sludge.



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BB in Pa.

11-16-2004 18:50:26




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 Re: Trans drain plugs in a 51 B in reply to Maark, 11-16-2004 15:51:21  
It isn't the crankcase drain plug, that is farther forward, counting the crancase plug there are 4, the one I can't figure out is a 1/2" plug, it's in the trans case and it's pictured on page 29 of the 201000 operator's manual but does not indicate what it's for. Thanks



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RalphinWI

11-16-2004 20:03:54




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 Re: Trans drain plugs in a 51 B in reply to BB in Pa., 11-16-2004 18:50:26  
If I recall the two A's I have been into I think it is either the power takeoff shift lever or the Hi-Low lever. I.e. it is a plug required by construction.



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