Rear brake line - Dodge Cummins Diesel Forum
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post #1 of 8 (permalink) Old 08-13-2010, 09:16 PM Thread Starter
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Rear brake line

My rear brake line in the frame rusted away behind the fuel tank. I want to replace it before it blows out. I dont know the size of the line or what ends are on the line. Does anyone know anything about the size and the fittings. I called the local dodge dealer and they cant tell me what size the line is or what size the ends are.

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post #2 of 8 (permalink) Old 08-14-2010, 02:48 AM
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My christmas gift to all of you there's a service manual. Go to an auto parts store they can help you out.

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post #3 of 8 (permalink) Old 08-14-2010, 06:45 AM
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It's standard 3/16" steel brake line. You can buy it in precut lengths, preflared and with fittings. If you've never flared steel line, it takes a little practice and a double flare kit. Most inexpensive way is the precut lengths. Your best bet is to replace the entire line from left front wheel to just before rear end where rubber line attaches to the steel line.

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post #4 of 8 (permalink) Old 08-15-2010, 12:25 AM
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best fix is to buy a prebent stainless brake line kit and swap them all out, i plan to do mine soon the brakes lines are rusty, my fuel lines are just scary though!!! got some 3/8 stainless line for them i swear if you breath on them they would leak!!!

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post #5 of 8 (permalink) Old 10-09-2010, 07:57 PM
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I have done this job in my driveway and spent about two days doing it. 3/16 brake line and a double flare tool and bender. make sure to bleed all wheels.
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post #6 of 8 (permalink) Old 10-09-2010, 09:32 PM
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You should check all of your lines, I replaced all my lines and hoses, bought a 50 ft coil, green epoxy coated stuff, bends easy by hand, does not kink.
I eliminated most of the junction blocks and made straight runs. No more worries about blowing lines, happened 2x !

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post #7 of 8 (permalink) Old 10-31-2010, 09:46 PM
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Mine was rusty behing the fuel tank. I just bought a new rear line from the dealer. They are pre-bent and it was only about $30.00.

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post #8 of 8 (permalink) Old 11-01-2010, 04:14 AM
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Im a big fan of 1/4" hydrualic hose myself.

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