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Off Topic Brake re-lining

Off Topic Brake re-lining

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ETD66SS
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So, I am working on a toy that I bought this past summer, a Pettibone Extendo 88 High Lift:

[img]http://i.imgur.com/46YJm3M.jpg[/img]

I am working on it this winter to get it ready for use next spring/summer. I am currently working on the parking brake. The machine has hydraulic brakes at the wheels, which don't work atm, as well as a hand lever operated parking brake at the rear of the transmission:

[img]http://i.imgur.com/wXghNIo.jpg[/img]

The brake band was seriously wiped out, so I priced a new one. ~$187.00 for a new band. I thought that was absurd, so I put the band on my outdoor grille and heated the crap out of it, got the old brake lining material off. I was able to buy some new lining material: https://www.mcmaster.com/#6224k346/=15gyuhs

At the moment I am shaping the new lining by clamping it between the band and the drum:

[img]http://i.imgur.com/V17WNqo.jpg[/img]

When googling about how to re-line bands/shoes, Pliobond adhesive kept popping up, and seemed like the best solution for the adhesive. I bought some Pliobond 25 & 35:

[img]http://i.imgur.com/dPzbI2h.jpg[/img]

Has anyone here ever re-lined old shoes? I'm going with adhesive because that's how the original was assembled, and this is only a parking brake, so not applied when driving.

I've read all the documentation on the Pliobond, and I must say it's a bit confusing. There are wet bonds, dry bonds, hot bonds, cold bonds, different materials use different adhesives, not sure I can mix them (put the 25 on the steel band, and the 35 on the fibrous lining material etc).

Before I start gluing, I'm hoping maybe someone here has experience doing this kind of brake restoration and has tips/pointers on the bonding process.
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Thu, Dec 15, 2016 7:46 AM
Andrew
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I would drill it and rivet it.
Glue it also if you desire.
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Thu, Dec 15, 2016 12:29 PM
ETD66SS
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Reply to Andrew:
I would drill it and rivet it.
Glue it also if you desire.
[quote="Andrew"]I would drill it and rivet it.
Glue it also if you desire.[/quote]

Well, The original lining was 3/16" from what I could tell, if I was going to rivet I probably should have bought the 1/4" thick lining material. I don't think I have enough thickness for rivets now. Also, I'm wondering how I would do the counterbored holes on the inside of the lining. This lining material is very stiff, and it's not like I can mark out the holes then get it flat to do the drilling.

I guess I will try the "hot bonding" method and see how it goes. It's supposed to be the strongest bond type. Was just hoping someone here has used Pliobond before is all...
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Thu, Dec 15, 2016 5:56 PM
mrsmackpaul
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Reply to ETD66SS:
[quote="Andrew"]I would drill it and rivet it.
Glue it also if you desire.[/quote]

Well, The original lining was 3/16" from what I could tell, if I was going to rivet I probably should have bought the 1/4" thick lining material. I don't think I have enough thickness for rivets now. Also, I'm wondering how I would do the counterbored holes on the inside of the lining. This lining material is very stiff, and it's not like I can mark out the holes then get it flat to do the drilling.

I guess I will try the "hot bonding" method and see how it goes. It's supposed to be the strongest bond type. Was just hoping someone here has used Pliobond before is all...
I would glue it thats all any of the brake places do these days and I have never heard of one coming off

Paul
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Thu, Dec 15, 2016 6:01 PM
Steve A
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Reply to mrsmackpaul:
I would glue it thats all any of the brake places do these days and I have never heard of one coming off

Paul
I just dropped of a clutch for bonding, its a flat clutch but I was told it would be done in a oven at 350F with 10 tons of pressure on it, the guy told me they typically do a stack of them at a time. As it turned out the shop owner is a old tractor guy and was willing to do my small job for a 12 pack of Cores out the back door.
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Thu, Dec 15, 2016 6:19 PM
ETD66SS
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Reply to Steve A:
I just dropped of a clutch for bonding, its a flat clutch but I was told it would be done in a oven at 350F with 10 tons of pressure on it, the guy told me they typically do a stack of them at a time. As it turned out the shop owner is a old tractor guy and was willing to do my small job for a 12 pack of Cores out the back door.


Yeah, I think what I am going to do is put the Pliobond 25 on the brake band, the 35 on the lining, let both dry, then clamp the band & lining to the drum and place it in the oven at 350 deg for 1 hour.

We'll see how that works out.
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Thu, Dec 15, 2016 6:23 PM
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