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Jd 40 transmission

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eric

03-01-2003 14:03:15




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have inherited a jd40s, it sat in a barn for almost 10 years without being cranked, change oil cleaned fuel system and replace points. Added a new battery and it fired right up!!!
I have got a shop manual for it but there are no details on draining and flushing transmission. There is a tab cover on the right bell housing. Is this also a fill for transmission oil???.
In addition the the pto will not disengage no matter what position it is in.
need just a little help
thanks eric

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Clooney

03-01-2003 15:08:13




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 Re: jd 40 transmission in reply to eric, 03-01-2003 14:03:15  
Eric, you received some good advise below. To add a little more..That tab on the bell housing is NOT for adding oil, it is a cover for the ignition timing port [to time the engine].
~On the PTO turning in either position: it could very well be stiff oil, but could also be a sign the counter shaft bearings are going bad or are gummed up with crud, [the PTO shaft runs through the center of the counter shaft]...

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Wayne in Tn.

03-01-2003 16:45:44




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 Re: Re: jd 40 transmission in reply to Clooney, 03-01-2003 15:08:13  
Hey Clooney, I could not figure out what he was talking about a TAB on the bellhousing, that would be a mess, full of oil. ha..



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lc

03-01-2003 14:53:24




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 Re: jd 40 transmission in reply to eric, 03-01-2003 14:03:15  
When you say it does not disengage regardless of position, it may actually be off. Mine will turn the pto even though not engaged, esp when cold. But I can hold the pto shaft with my finger . If it was actually engaged you couldn't hold it.



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Wayne in Tn.

03-01-2003 14:50:18




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 Re: jd 40 transmission in reply to eric, 03-01-2003 14:03:15  
Eric, If you have a 40-S. The transmission drain plug will be on the left side underneath the left footrest, at the rear, do not remove the plug that is vertical in line with the pto shifter, this has a spring and ball for the shifter detent. The fill plug will be just behind your right heel, (sitting on tractor) at the rear of the right footrest plate. Fill here until it runs out. As to flushing, you can use diesel, kerosene, mineral spirits, ect. Just make sure to drain it well. The original manual calls for filling with 90 weight gear oil, you can use 140 weight to make the gears quieter. As to the pto not stopping, sometimes just thick oil will make them turn, even when not in gear. Put the selector lever in one position and try turning it by hand, it should turn by hand in one position and not the other. If it will turn by hand in one of the positions, then it is ok, if not, then you have a problem with the shifter internally.

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gene

03-01-2003 14:16:34




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 Re: jd 40 transmission in reply to eric, 03-01-2003 14:03:15  
there are three different places to drain on the 40. is yours a T or a U. you will need to drain both of the outer casting. an then the tranny it self in the center. johndeeregene



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