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1992 4Runner - Rusted Rear Brake Line.

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Old 04-06-2009, 04:16 PM
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Exclamation 1992 4Runner - Rusted Rear Brake Line.

How do I get at it?
I'm assuming I need to drop the gas tank (UGH!)

How hard is dropping the gas tank?

The leak is in the TOP hose/line in the 2nd picture

Anyone else have a rusted brake line in this spot?

I've never replaced a brake line before.

Tips to make this job easier will be greatly appreciated!

THANKS!!!




Last edited by JohnRaven; 04-06-2009 at 04:18 PM.
Old 04-06-2009, 04:18 PM
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damn....thats pretty rusty the only way you will prolly get it out is with VGrips and penitrating oil.
Old 04-06-2009, 04:27 PM
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THat looks pretty bad.
If you need any parts I may have them I have a 1990 i am parting out here in caloifonia. Here is some of the stuff from the barkes I have removed.

parking brake cables
Old 04-06-2009, 04:40 PM
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just run a new on besides gas tank thats what i did works great!!!dropping the tank is looking for gas leaks!
start by washing your rig!
Old 04-06-2009, 04:42 PM
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Originally Posted by bigt
just run a new on besides gas tank thats what i did works great!!!dropping the tank is looking for gas leaks!
Actually thats probably a great Idea.
Old 04-07-2009, 03:34 AM
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Originally Posted by bigt
just run a new on besides gas tank thats what i did works great!!!dropping the tank is looking for gas leaks!
start by washing your rig!
Yeah, that's what I did. I just bought a roll (25') of coated brake line (lasts much longer than regular steel lines for just a bit more money), and pushed it in between the frame and gas tank. I put connectors on, flared the ends, and bent the line so that it ran pretty much the same path as the old line.
Old 04-07-2009, 07:19 AM
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GREAT Idea guys!!!







I'm trying to verify what line is what. Where should I cut it to splice a new piece of line in???

Thanks!

Last edited by JohnRaven; 04-07-2009 at 08:08 AM.
Old 04-07-2009, 08:08 AM
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Anyone know for sure???
Old 04-07-2009, 08:26 AM
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Cut the lines wherever it is convenient. On my truck the brake lines are accessible along the frame under the passenger door. There were two on mine and I just did both. Cut and run them back to the LSPV.
Old 04-07-2009, 09:45 AM
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Originally Posted by PCE91V64x4
Cut the lines wherever it is convenient. On my truck the brake lines are accessible along the frame under the passenger door. There were two on mine and I just did both. Cut and run them back to the LSPV.
OKAY! THANKS!!!

Just so I don't go cutting the wrong lines and making more problems for myself.... Please look at the picture!

Old 04-07-2009, 10:05 AM
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The two red lines are brake lines and the blue one is your fuel line if I remember correctly (don't cut that one).

I wouldn't splice in your brake line at all. If it's rusted through, chances are you'll have a hard time flaring that old tube anywhere along it's length (... and be able to get a good seal). I would remove that whole section of line. It goes from the LSPV to the front of the truck. Depending on which of the two lines it is, it either goes to a threaded fitting (T or union... can't remember) behind your front passenger wheel near the frame, or it goes way up front to your ABS module (under your battery). Just cut the line where it's leaking, then remove it totally. You should be able to trace it as it goes above the gas tank with your hands (have a buddy handy to help you out. One guy can move the tube at one end of the tank, while the other guy checks which tube is moving at the other end). Once the old one is removed, just route the new line where it's convenient, put the connectors on the tube, and flare the ends.
Old 11-22-2010, 07:03 PM
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Originally Posted by GSGALLANT
Yeah, that's what I did. I just bought a roll (25') of coated brake line (lasts much longer than regular steel lines for just a bit more money), and pushed it in between the frame and gas tank. I put connectors on, flared the ends, and bent the line so that it ran pretty much the same path as the old line.
Hi
I'm having basically the same issue as described here
Though I'm curious what the size of connectors I will need to screw onto the existing connectors
Old 11-22-2010, 10:22 PM
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Red face

Unless you live in the Sun belt and the truck never sees water.

You always want to replace brake lines threaded connection to threaded connection.

I have never been able to make a double flare on old steel line they always crack.

another tip that works make your flares after putting on the nuts away from the vehicle. where you have room to work.

when you push the line past the fuel tank Or any where it could get dirt in I just use electrical tape to cover the end. When ready to connect just remove tape.

Flash319 used to have a good connection for these brake line nuts at a good price
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