PT-19 brakes

[Ranchaero Wing Shop]

'I need to replace brake lines due to corrosion and leaks in the lines.
Using AN fittings where possible seems like a good idea. I see the
inverted flare fitting at the master cylinder has an oddball thread at
the master cylinder. Not a pipe thread but looks like a straight thread,
so it seems unlikely I can replace that one with AN.

Questions:

1) is the inverted flare used on these brakes a 37 deg flare like AN?
(or 45?) Can I use my 37 deg AN flare tools?

2) Any suggestions for me? Is this a good idea or should I stay with the
inverted flare?

Thanks for any help.

David McCord


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