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Old 07-12-2017, 05:22 PM   #1
Drummerboy
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Best way to remove original rubber brake lines from back of hubs?

I blew a rear rubber brake hose on my '68. The ones that come off of your hub. Mine are pretty rusted. I have a set of line wrenched. I believe the fitting to be a 5/8". Is it best to saturate them in something Like PB Blaster, some kind of penatrating oil for a few days? I tried to brake one end loose, very gently, and I stopped, as it didn't feel good. If anyone has had any exwwith this time of situationfeel free to chime in please!

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Old 07-12-2017, 06:38 PM   #2
berch 69GMC
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Re: Best way to remove original rubber brake lines from back of hubs?

I cut mine and slid a box end wrench over the line to get it off.
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Old 07-12-2017, 07:05 PM   #3
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Re: Best way to remove original rubber brake lines from back of hubs?

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I cut mine and slid a box end wrench over the line to get it off.
Didn't think about that. Great idea!
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Old 07-12-2017, 08:19 PM   #4
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Re: Best way to remove original rubber brake lines from back of hubs?

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Didn't think about that. Great idea!
That is a good idea. Use a 6 point! I recently had the same problem but did not go at it with enough patience. One thing lead to another and I eventually found myself replacing the entire set of brake lines!
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Old 07-12-2017, 08:30 PM   #5
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Re: Best way to remove original rubber brake lines from back of hubs?

Certainly soaking them in some kind of penetrant will help. Bump them a little back and forth and soak them some more can help.
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Old 07-12-2017, 08:33 PM   #6
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Re: Best way to remove original rubber brake lines from back of hubs?

If the fitting gets stripped with the box-end wrench, you can always pull out the trusty vise grips. You are not reusing the line/fitting, so no need to keep it pretty.
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Old 07-12-2017, 08:49 PM   #7
clay68c10
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Re: Best way to remove original rubber brake lines from back of hubs?

A deep socket will work too, preferably a 6 point
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Old 07-12-2017, 09:01 PM   #8
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Re: Best way to remove original rubber brake lines from back of hubs?

What size are the fittings, 5/8's???
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Old 07-17-2017, 06:09 PM   #9
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Re: Best way to remove original rubber brake lines from back of hubs?

Well, I just twisted the hard line thats on the back of the rubber line. Looks like I'll be replacing that whole line now. Lucky me....
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Old 07-17-2017, 08:56 PM   #10
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Re: Best way to remove original rubber brake lines from back of hubs?

Before you order new hard lines...make sure the bleed nipples in your wheel cylinders are able to be opened so you can bleed the brakes...

I am a bit OCD on brakes...if it was mine I would pull the rear drums, then replace the rear brake shoes, cylinders and hard lines...plus the flex line...

Little trick I learned a ling time ago...especially with old brake lines...tighten the nipple on the pipe first, then back it off using lots of spray like WD-40.

Check out LMC link : There are several different cylinders,,,makes sure you get the right ones...

http://www.lmctruck.com/icatalog/cb/full.aspx?Page=144

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