break line replacement help
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Senior User
Joined: Jan 2011
Posts: 193
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break line replacement help
So I blew a brake line today and i need some help with trying to fix it... its the line that runs from the rabs to the rear axle where it junctions off. it is a steel line so i am assuming that it is finally rusted out. Do i need to drop the front tank to get in there? Also, is there anything i need to keep in mind? What fittings should i use and how does the fitting unscrew from the RABS? All i know is that i need a double flare tool and need to bleed brakes when im done.
Do i need to take the wheels off to bleed the brakes??
Do i need a tool to bend the metal brake pipes??
Any and all help would be greatly appreciated...
Do i need to take the wheels off to bleed the brakes??
Do i need a tool to bend the metal brake pipes??
Any and all help would be greatly appreciated...
Cargo Master
Joined: Jul 2010
Posts: 3,014
Likes: 115
These trucks are getting old. If the lines are all original, I would replace them all at the same time right now. Otherwise, you'll be fighting them one at a time for years. Trust me. It happened to me. I got a pre-bent set. I'll try to find a link here in a minute.
Edit: It was a seller named Inline Tube on eBay. I got stainless prebent lines. Replaced them all with only vise-grips and combo wrenches. Still haven't bled them. What can I say? I'm a slacker. Haha
Edit: It was a seller named Inline Tube on eBay. I got stainless prebent lines. Replaced them all with only vise-grips and combo wrenches. Still haven't bled them. What can I say? I'm a slacker. Haha
Cargo Master
Joined: Jul 2010
Posts: 3,014
Likes: 115
Yeah. I would replace every hard line that was installed at the factory at this point if I were you. It's a long line, I guess depending on your wheelbase, as you can see by looking at it. You could probably replace the segment from the RABS to the leak or from the leak to the little frame fitting where it connects to the rubber hose, whichever is shorter or makes more sense. Just double flare the ends, and connect them with a union.
Fleet Owner
Joined: May 2009
Posts: 21,437
Likes: 76
From: Gilbert, PA
You can fish it behind the tank no problem, that is the least of your concerns.
Flaring the line will be your problem
Flaring the line will be your problem
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Cargo Master
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hey any of you know the length of the line from the junction underneath the master cylinder that goes over to the right front caliper?..im gonna crawl underneath tom and look, have to get a buddy to pick one up for me in the morn so i can get going and stopping again..i know im reviving an old thread..thanks if you can help me save some time and my clean clothes 
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