3/16" line
10mm x 1.0 fittings
double flare
The size is probably an half inch bolt to 3/4 bolt.
You do not need tape on any flared fitting, brake or regular. The brake line and the fittings are different size and thread type than regular copper line and fittings. You can't mix them.
1/4 inch line, 3/8ths fittings.
10mm.. not 12mm
The brake lines are not attached to the booster. They are attached to the master cylinder. To remove them, use an opened end wrench on the fittings located where the lines meet the master cylinder and slowly turn counter clockwise. BE CAREFUL NOT TO STRIP THE FITTINGS THEY ARE MADE OF BRASS AND ARE VERY SOFT!
There is no safe way to repair a broken or leaking brake line. The line or tubing that is leaking must be replaced or a new piece of tube, spliced into the line with fittings, to replace the leaking area.
just unscrew it at the fittings and take it off and take it to the parts store with you and get another line at the parts store and bend and reinstall.
The brake lines are 3/16", the fittings are metric a 131 mm wrench to get them off. These lines use a bubble flare, so pre-flared lines are the way to go. Also there are fittings available that switch from the metric bubble flare to the more familiar 45 double flare, if you just need to replace a section of the line.
never heard of the fittings,now you can run 2 fixtures off that line,not fittings
Assuming you're in an air brake equipped vehicle, it could be a number of reasons. Loose air line fittings, ruptured air lines, or bad gaskets in one or more brake chambers would be the primary culprits.
Ghji
If you have a power brake booster then there will be a vaccum line that runs to the brake booster on the firewall from the carburator. Check the booster for holes and broken fittings or buy a new booster. if no brake booster then brakes shouldn't affect vaccum