Brake line question?

[tracyt3]

I have a 85 Pt40, the right rear dual tire air line to the brake is
leaking air at the fitting where the rubber hose goes into the brake
assembly. I was able to put a hose clamp on it to get it home but now
I have to fix it. I was wondering before I tear into this job: how is
the line connected? is it a permanent fitting, a compresion or what?
and how is the best way to get it off? Do I have to take the entire
line off? any insight would be greatly appreciated. I am sure there
are many here that have had the same problem. Thanks.

John Mann
85 pt40
Granbury Tx.