How do you install truck front air brake lines?

Answer 1

First, make sure the replacement lines are an EXACT match to the ones being replaced - this is crucial. From there, it's a simple matter of disconnecting the female fittings on each end with usually a 7/8" wrench, cleaning the threads on the male end, applying some liquid thread seal, reconnecting the new line in the same fashion, and using zip ties to secure it in a manner to where it won't rub against anything else.