Video tutorial on how to replace the brake lines on your vehicle. Over time brake lines are exposed to the exterior elements and eventually they will rust away, creating a rupture, therefore losing braking power. If the line does fail, you will lose a substantial amount of braking performance and the brake pedal will feel spongy along with longer pedal travel. If a line were to fail on one section, you will still have half or less of braking performance which will allow you to pull over, but the vehicle is unsafe to drive.
Amazon links for various products used in the video for both USA and Canada:
USA:
Master flaring tool kit: amzn.to/3rOwhLl
Double flaring tool kit: amzn.to/3uhpFqk
Bubbling flaring tool kit: amzn.to/3dD6VLg
Brake line bender: amzn.to/3sUuOEw
Brake line hand bender: amzn.to/3mruOJR
Tube cutter: amzn.to/39JAbyR
Canada:
Master flaring tool kit: amzn.to/3fNmTFD
Double flaring tool kit: amzn.to/3dD5XP8
Bubbling flaring tool kit: amzn.to/3dD2Uq6
Brake line bender: amzn.to/3ultkDJ
Brake line hand bender: amzn.to/39K9iLd
Tube cutter: amzn.to/3cNwRog
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Tools/Supplies Needed:
-line wrenches
-flaring kit
-new brake line
-brake line fittings
-line cutter
-file
-brake fluid
-rags
-jack and axle stands or ramps
Procedure:
-you’ll notice is either an oily residue on the ground or somewhere underneath the vehicle, with close relation to the brake lines, besides the reservoir level dropping
-using a line wrench is recommended, as they are able to grab onto a larger area of the hex which prevents it from stripping
-the line can also be cut off if you’re replacing the whole run and insert a socket
-remove the lines and try not to bend the existing shape too badly as we will be using this after
-next is removing the line from the master cylinder that goes to the driver’s side
-it’s always good to have a rag handy to prevent any fluid from dripping
-replacement lines will vary, you can buy a length or buy a roll depending on the material
-copper tends to be easier to work with, is corrosion resistant, but can work harden or fatigue easier
-steel on the other hand is susceptible to corrosion so coatings are applied such as an epoxy or zinc
-stainless steel lines are also an option which can be harder to work with, yet is corrosion resistant
-you will need to match the existing brake line diameter along with fitting type along with the lines being metric or imperial.
-it’s best to use a bender so you don’t risk kinking the line
-match up the old and new line, place the bender in the correct position and continue to bend the line
-using the cutter tool, set it in place, remember to cut about a 1/4” longer to account for the flare, then tighten the knob, spin the cutter until it’s loose, tighten again, spin, and repeat until the end separates
-de-burr the cut line by simply sticking it in the center of the line and rotate back and forth until the burr is gone
-hit the end with a file to clean the cut a little more
-for the flare, this is a double flare connection
-first we will need to ensure the clamp is clean, both the jaws where the line sits and the surfaces that face each other
-install the fitting first
-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
-tighten the clamp, ensure it is tight as we don’t want the line slipping
-apply a small amount of oil to the end of the die which helps with achieving a high quality flare. Insert the dowel end in the line
-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
-remove the die and reinstall the cone tool so the flare can be folded down
-tighten until it stops and if desired apply a touch more oil
-the final flare done and ready to be installed
-install the line
-ensure everything is tight and finally we can move onto bleed the system
-fill the master cylinder reservoir with fluid
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