What thread size is the inlet tap on JD 3010 breakaway coupler?

[David Michael Hoover]

What is the size of the inlet tap on a JD 3010 breakaway coupler? I need to plug it while I tie in a line to the hose.

 

[Tx Jim]

If it's the orifice I'm thinking about it's ORB(o-ring boss). Spec's of fitting item 29 is in 2nd photo. If scv is operating as designed no plug is required to operate engine with hyd line to breakaway coupler is disconnected

 

[David Michael Hoover]

thank you. i have tried NPT and that is not even close. I will probably have to go to John Deere dealership to find the ORB?

 

[Jim.ME]

thank you. i have tried NPT and that is not even close. I will probably have to go to John Deere dealership to find the ORB?

Hydraulic shops, many dealers other than JD, even parts stores that make hoses generally have selections of adapters like those. Even TSC may have some of the common sizes.

From the dimensions in the picture Tx Jim posted it is likely 9/16- 18 thread (same as a bolt thread) on the O-ring side and #6 JIC on the tubing end.

 

[David Michael Hoover]

That is what I was hoping since we don't have a JD dealership in our rural town. Saves me driving to the next town over. Thanks so much for your help.

 

[Jim.ME]

Is there a reason you can't just take the old one with you?

 

[David Michael Hoover]

That is what I'm going to do.

 

[Jim.ME]

Good on taking the fitting with you.

If I looked at the same parts page as Tx Jim the #28 O-ring for the #27 and #29 fittings is JD part # R26448, which they describe as Standard Size 906, 90 durometer. 906 is an industry standard size O-ring and is common on 3/8 (aka #6) hydraulic fittings. With the O-ring info and what TX Jim posted, I believe you will find the thread on the O-ring side is straight 9/16-18 and the other side is a 37 degree #6 JIC male. The fittings should be common at most places that make hoses and/or sell adapter fittings.