Need help with brake lines
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New User
Joined: Feb 2005
Posts: 15
Likes: 0
Need help with brake lines
I have a 79 F150 4x4. I broke the metal brake line on drivers side rear. The one that goes from the wheel to what looks like a small metal box mounted on the rear axle. The brake line then goes over the rear end to the passenger's rear wheel.
Question #1 The small metal box on axle also has a rubber hose coming out of it also. Is that the breather hose for the rear end. The one fitting is really rusted bad and not sure I am going to be able to remove. I tried last night with line wrench but no luck. The nut is rusted away and smallest line wrench does not fit. I have been using liquid wrench for two days on the fitting. Can I get a new fitting box? Any help would be great.
Question #1 The small metal box on axle also has a rubber hose coming out of it also. Is that the breather hose for the rear end. The one fitting is really rusted bad and not sure I am going to be able to remove. I tried last night with line wrench but no luck. The nut is rusted away and smallest line wrench does not fit. I have been using liquid wrench for two days on the fitting. Can I get a new fitting box? Any help would be great.
Elder User
Joined: Nov 2002
Posts: 620
Likes: 8
From: USA
It's the hose that connects to the hard line on the frame. Would be impossible to get the brake line to the axles without something to allow for axle movement.
I usually replace these when the truck gets very old, only one hard emergency stop could bust a hole in that old rubber line.
Soak it with PB Blaster for awhile then use vice grips to loosen it.
I usually replace these when the truck gets very old, only one hard emergency stop could bust a hole in that old rubber line.
Soak it with PB Blaster for awhile then use vice grips to loosen it.
Logistics Pro
Joined: May 2003
Posts: 4,238
Likes: 21
From: Northern Illinois
The "small metal box" is actually part of the rubber brake hose. The bolt that hold's the hose to the rear axle is a hollow bolt that hook's up to a piece of rubber hose for rear axle ventilation. Are you rounding off the nuts on the metal lines from the wheel cylinder's? If so use a good set of vise grips and a little heat. If the old rubber brake hose is dry rotted replace it.
Elder User
Joined: Nov 2002
Posts: 620
Likes: 8
From: USA
For some reason I thought he was talking about where the hose connects to the steel lines on the frame, but same diff.
The bolt that holds the brass block to the axle is a banjo bolt, you'll want to make sure to replace the washers and possibly the bolt when you change these.
Liquid Wrench is about the same as WD40 from what I've used of it. Anything is better than nothing though.
The bolt that holds the brass block to the axle is a banjo bolt, you'll want to make sure to replace the washers and possibly the bolt when you change these.
Liquid Wrench is about the same as WD40 from what I've used of it. Anything is better than nothing though.
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Senior User
Joined: Oct 2003
Posts: 480
Likes: 1
From: Elyria, Ohio
Your brakelines are broken; so, you need replacements. Quit fighting around them. cut them off next to fitting. If you can put socket on them use rachet or pry bar to assist breaking fitting loose. If fittings torn up- Use channel locks or vise grips as others have said. Inspect rubber brake hose with banjo fitting for cracks, peeling, scrapes. Easier to replace at this point; but its attached to another steel line at the top of the frame. Good luck
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