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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum

Re: Sealing threads in a hydraulic system

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07-06-2020 19:28:51

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I think they are straight thread, of course they could also be NPTF, but I can't visually see any taper in the threads. Nevertheless, my highly accurized, microscopic seeing eyeballs aren't what they used to be. It's obvious the threads used in/on the old hoses before were tight well before all the threads were used up, so my question might have been premature. I know I had to really bare down on the wrenches on the bench top to get these things to move!

The hose end to bushing is normal hose end and bushing to coupler is just to go from 3/8" hose size to a 1/2" Pioneer push/pull fitting. This is the way it's called out in the parts book. I don't work with hydraulic fittings much anymore and my recollect is getting dimmer.

I have to go back into town tomorrow so I'll pick up a tube of that Loctite 545. Needed or not it shouldn't hurt.

Thanks for straightening me out!

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07-06-2020 19:36:46

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 Re: Sealing threads in a hydraulic system in reply to Randy-Ia, 07-06-2020 19:28:51  
Wish the edit feature worked, it's ridiculous to have to write a complete new post to add one sentence or two.

Anyway...I just wanted to say that the valve end is ORB. The coupler end is NPTF just as everyone knew except me. The sealant will be for the couplers and bushings. All is well in the never-never land of my brain...LOL!

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