[jdfan]

I'm trying to test the hydro pressure on a 445 with a 40 loader. I have the gauge and I thought the best place to connect it would be on the mid mount valve body. I removed one of the couplers and all of my adapters are to small. I need to know the thread size so I know which adapter to get. Thanks

 

[woodpecker41]

You might be able to look up the threaded fitting on JD Parts and that should list the thread size that was used. Roger

 

[charms]

I think it's ORB 8, but I'm not 100% sure.

 

[jdfan]

You might be able to look up the threaded fitting on JD Parts and that should list the thread size that was used. Roger

Oh Lord knows I tried! I have the complete service manual for the 4x5 series and even that was no help

 

[jdfan]

I think it's ORB 8, but I'm not 100% sure.

You may not be sure of the size, but you sure educated me how to find it. I know very little about hydraulic fittings and I never heard of Orb! Now there's a whole new world of numbers open to me. Oh joy! 😁

 

[vbosch]

Whats wrong with just putting the male side of the coupling set on the pressure gauge?

 

[jdfan]

Whats wrong with just putting the male side of the coupling set on the pressure gauge?

Nothing I guess if I could make it fit. The thread types don't match.

 

[r_taylor]

All you need to know about hydraulic fittings

 

[jdfan]

Thank you so much! In 2 minutes this cleared up most of my questions.