Teflon tape on hydraulic lines?

[Baz]

Recommended or not, around the thread on the pipes as they are screwed into the MC's?

 

[tony barnhill]

Never found a need to use itthere if the flares are good...

 

[Guest]

Hydraulic lines should be flare fittings. They seal on a flare on the tube not the threads that holds the tube in place. These threads are straight cut, not tapered like NPT. Putting teflon on the threads does nothing but look bad. It the connection leaks look at the flare on the end of the line or in the fitting it screws into for the problem. They should not be over tightened or the flared tubing will crack

 

[Baz]

Just seemed they unscrewed too easily. But then again, I did notice a couple of the pedal box securing bolts were missing (1 under the dash and 1 outboard rear) and my clutch master rod had no clevis pin (nut and bolt instead) so it appears that this has been attacked before in the past.
The flares look good, so I'll take that advice, thank you Tony / Gerry.

 

[Guest]

They should unscrew easily after the first turn or so. If they don't then the threads on one side or the other may be buggered and waiting to fail completely

 

[tony barnhill]

Yep, if those things are hard to turn either the threads are bad or theres some gunk in between the pipe & the nut...I always clean my pipes real good before reattaching...I have had them where the nut is frozen to the pipe with rust & crud.

 

[jlaird]

The inside of the flair can actually be cleaned up with some fine sand paper, like 600. Only atempt if you have a bit of a leak.

 

[Steve_S]

Teflon tape will not hold the pressure. Leave them dry. If the fitting is tight and still leaks, replace it.