How to Properly Double Flare a Brake or Fuel Line

How to make a double flare on a brake line. In order to do a double flare, you will need a double flaring tool kit. A kit normally comes with various dies that fits different size lines, clamp, and cone tool. It's important to produce a high quality flare and use the correct flare in order to get a leak free connection. A double flare can be used on brake systems, fuel systems, and oil supply systems, this will vary between vehicles. #brakes #brakerepair #mechanic Website: http://4diyers.com Patreon:   / 4diyers   Facebook:   / 4diyers   Google Plus: https://plus.google.com/+4DIYers Twitter:   / 4diyers   Instagram:   / 4diyers   Tumblr:   / 4diyers   Pintrest:   / 4diyers   Tools/Supplies Needed: -double flaring tool kit -lubricating oil -clean rag -file -fittings Procedure: -cut the line to size using a line cutter -simply install the cutter, tighten it, spin the cutter, then tighten again one loose and repeat until the line separates -when cutting the line a burr will form, use the de-burring tool on the back of the cutter if equipped -stick the de-burring tool in the hole, applying medium pressure and rotate -I also like touching up the end with a file and be sure to face the line down in the end to remove any metal filings -we will need to ensure the clamp is clean, both the jaws where the line sits and the surfaces that face each other -if there is any dirt or it can't clamp tight enough, the line will slip, causing flare issues -even use a little brake cleaner if needed to clean off any oil residue -install the fitting first, otherwise you won't get it on after the flare has been done -the side which is being flared must be on the chamfered side of the clamp -the line should be exposed the same thickness as the large side of the die -there are various dies available based on what size line is used which is determined by which fits best within the inside of the line -ensure the clamp is tightened down well as we do not want the line slipping which will cause flaring issues -apply a small amount of oil to the end of the die and do this after the line has been tightened securely in the clamp -this isn't necessarily needed, but it does help with achieving a high quality flare -insert the dowel end in the line -next install the cone tool which will push the die into place, forming the line -the cone will have a depressed area it sits into on the die -tighten the cone tool until it stops -for added assistance, the line clamp can be tightened in a vise -reinstall the cone tool so the flare can be folded down -again tighten until it stops, there should be some oil residue left over, but if desired apply a touch more oil which provides some lubrication -finally the flare is done and ready to be installed Thank you to all those who watch my videos and support my content. Don't forget to subscribe to my channel for future tutorial videos and like my video if you found it helpful. New videos are always being uploaded every week! © 4DIYers 2013 All Rights Reserved No part of this video or any of its contents may be reproduced, copied, modified or adapted, without the prior written consent of the author.