Pioneer couplings 3/8inch

old-9 · Mar 26, 2020

Does anyone know what size "O" ring used on 3/8 inch pioneer coupling? My loader needs one bad. thank you, joe

Bob · Mar 26, 2020

If it's REALLY a 3/8" body coupler (odd in my ag experience, but perhaps not in the CUT world) it should be an "industry standard O-ring number" 116.

The more common 1/2" body couplers us an "industry standard O-ring number" 211.

Leroy · Mar 26, 2020

Not sure if I remember correctly but I think the couplers used on Deere combines were 1/4" and not 3/8" and never heard of an inbetween size. This coupler was used on the hydrolic real lift on series 45 combines and probably more.

old-9 · Mar 26, 2020

Looks like I need to add more info- this is a "Pioneer aftermarket coupler.It has 3/8 inch pipe thread in and out. I added this to my loader so I could R&R without undue work. I have one coupler that leaks bad. I have replumbed so it is not an emergency ,but want to repair it. thanks joe

flying belgian · Mar 26, 2020

I don't think you use o-rings on pipe thread. Where would you put them?

old-9 · Mar 26, 2020

The o ring is internal where it plugs together.
here

Bob · Mar 26, 2020

(quoted from post at 12:17:36 03/26/20) Does anyone know what size "O" ring used on 3/8 inch pioneer coupling? My loader needs one bad. thank you, joe

Was the info I posted below earlier today of any use to you/was it correct?

paul · Mar 26, 2020

My little NH compact tractor cane with 3/8 inch connects. I had to put on normal 1=2 inch.

Paul

old-9 · Mar 27, 2020

Thank you Bob, I looked up the #116 o rings and they look to be the right size. I will measure the old one tomorrow and see if I can get local. Will post back, joe

Pioneer couplings 3/8inch

old-9

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