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Thread Size and ID

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I am trying to get some information relating to the thread ID and size for the handbrake adjustment hole on my JD2040s / 2140 tractor, as I need to put a hydraulic fitting into it to accept a return pipe from one of my implements. I know the plug is a taper thread, but that is all I know currently:


If anyone knows what it is, then I would appreciate some input here.

Kind regards

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JD parts says it's a 1" pipe plug.
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I'd say for that era tractor NPT. Since it will be dump to sump, I would not be too worried about leaks. I would use a paste type "pipe dope" just to seal from water entry.

I agree, do NOT use teflon tape any where on your tractor.
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