Question regarding assembling an hydraulic gauge with a quick connect

[SylvainG]

By 'these days', what do you mean? My tractor is 10 years old. Is it considered within 'these days'?

 

[jonsstihl]

don't worry about the air in the hose it will compress and won't affect your hydraulic pressure readings.

 

[SylvainG]

The gauge is 'in-line' and not 'dead-end' so whatever air is in the hoses will get to the main hydraulic system IMHO.

Won't it mix with the hydraulic fluid, which is not recommended?

"Cavitation, on the other hand, is the formation of gas bubbles that create vapor cavities in a liquid. It occurs when the gas bubbles in the liquid are subjected to rapid changes of pressure. This higher pressure causes the air bubbles to implode, which generates an intense miniature water hammer (shock wave). This shock wave creates significant wear as the gas bubbles implode on or near a metal surface, causing cyclic stresses through repeated implosions."

 

[SylvainG]

How much torque can you apply to 1/2" quick release threads before you strip the thread or split the fitting in half (can it be done?). I've screwed them in pretty tight pour they still slowly leaks. I'm afraid of splitting the T fitting in half or stripping the threads by applying to much torque.

 

[Xfaxman]

What thread sealant did you use?

 

[SylvainG]

None. I read that NTPF do not require sealant.

 

[daman1]

None. I read that NTPF do not require sealant.

Technically no but I always do, I hate redos.

 

[Xfaxman]

That is true, but in this case maybe the mating threads at the T are NPT which requires a sealant.

Is it leaking at the other end of the hoses?

 

[WranglerX]

You can use PTFE (teflon tape) sealant or a high pressure, oil certified "pipe dope" to assist in tightening threaded connections.... Most sealant are miss labeled as a sealer when the are really a thread lubricate which allows more torque to be applied, there for meshing threads tighter preventing leaks.... The only place you don't use PTFE tape or pipe dope is on connections with straight threads, the general have internal sealing surfaces, which NPT (tapered) do not...

Since I have very poor success with PTFE tape and its not really recommended because it can separate and clog filters and strainers, I use a pipe dope....

This stuff and anti-seize compounds have made my life so much easier around the property....

 

[SylvainG]

That is true, but in this case maybe the mating threads at the T are NPT which requires a sealant.

Is it leaking at the other end of the hoses?

No, just the T so that could be it.