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Thread: Rear axle brake hardlines

  1. #1
    Join Date
    Mar 2000
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    Default Rear axle brake hardlines

    Hmmm... Brakes didn't quite feel right while out today. Checked when I got home and the reservoir for the rear brakes was completely empty.

    Start looking around and find the wet spot at the driver's side of the rear axle. Looks like the hardline rotted through under the clip that holds it to the axle.

    Not having much luck with finding the part online - RockAuto, GMPartsDirect, etc. Can get the hoses, but not the hardlines. Only place that seems to have a listing is www.inlinetube.com - 90-94 Power Disc Brake Line Set 11pc 3/4 ton Long bed. Looks like all of the hardlines for $185 for steel or $210 for stainless. Extra $25 would be a no-brainer, I think.

    Have to check with the dealer tomorrow to see if I can get the one line. I'm not really looking at replacing everything right now.

    Any thoughts?
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  2. #2
    Join Date
    Apr 2001
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    Arrow

    Napa and many "better" parts stores will have fixed length brake lines (with the correct fitting at each end) for a fraction of that cost. Tubing benders are cheap, and a little practice makes for professional results. If you can flare, it gets cheaper yet. Bulk lines and fittings are very inexpensive, compared to fabricated lines.

    On the other hand..... $210 for all SS hard lines isn't a bad way to go. Easy job, if it all fits. What is your time (and peace of mind) worth?
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  3. #3
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    Default

    Any suggestions on measuring for the replacement line from NAPA? I had thought about going the "roll your own" route.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  4. #4
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    Arrow

    Measuring is easy. Run a string along the line, then select a length within an inch, if not exact (there's room for adjustment, an inch longer is better than an inch shorter). If you're going to bend your own for the first time, PM me and I can give you some helpful advice. It's easy, but there are a few simple techniques to prevent flattening/rippling/kinking the line.

    When you buy the lines, take the old with you (don't destroy them during removal, as best you can). Make SURE the fittings are the correct size and type. Also, buy/acquire a bender of the same radius for the tubing size (two-handled type is the best). Match as close as possible the tubing size (diameter) of the new line, and the bend radii of the old line, with the bender (makes exact duplication a lot easier).

    Come to think of it...... I may have a set. I'll have to check. If I do, they'll be taken off of a 95, and should be in good shape (no rust here). If they are the same, or close with the same fittings, they should work. You can have them for postage, if they'll work.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  5. #5
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    Thanks for the offer. Going to pick up a line this morning and try my hand at bending. We'll see how that goes.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  6. #6
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    Default

    Bending brake lines wasn't half the ordeal that I was expecting it to be. Went fairly easily. Need a bit of practice to be able to get the bends exactly where I want them, but I'm pleased with my results.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  7. #7
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    Arrow

    Very good. There's a simple technique to getting the bends exact.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

  8. #8
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    Quote Originally Posted by DmaxMaverick View Post
    Very good. There's a simple technique to getting the bends exact.
    Okay time to share,.. because mine always look like sphagetti on steroids,.

    Nick
    1999 chev suburban C2500
    300,000 mi

  9. #9
    Join Date
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    Quote Originally Posted by phantom 309 View Post
    Okay time to share,.. because mine always look like sphagetti on steroids,.

    Nick
    I was hoping he would spill the beans too. . . . . emt is a 6 in radius so I figure it's something like that for brake lines, just shorter.
    "The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government."
    -Patrick Henry


    A5150nut
    2006 K3500 D/A
    94 6.5 4x4 5spd Sold

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