How do you get a perfect seal on brake line joins? I'll need to open my braking system to fit new calipers sometime soon, and the joining procedure is the only bit I've not done before! Any pointers on how to join brake lines? Rough torque guides? As in nip up gently, yank tight like an ape(my setting for brake slipper carrier bolts)
Any advice gladly received.
Don't put anything on the threads at all. It doesnt need it and could block or contaminate the hydraulic system. Assuming that the pipes are not siezed with age or corrosion, take a a look at the joint before you undo it and note roughly how far out the nut is. Then undo it and retighten it to the same position. You will soon get a feel for how tight it should be.
Be aware that overtightening can cause problems with pipes and nuts splitting and difficulty in undoing in future.
Only a very rough guide I know but better than nothing (practice makes perfect )