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Old 04-01-2021, 04:13 PM   #1
Asshat
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Brakes dragging 1963 C20

Want to make sure this is correct, driver side front brakes.
After hitting the pedal, the drum drags on the brakes as if the whole assembly is rotating. When spinning the wheel in reverse it loosens up.

Looks like what I have matches the manual, unless I have the wrong shoe leading.
Any suggestions?
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Last edited by Asshat; 04-01-2021 at 04:31 PM.
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Old 04-01-2021, 06:02 PM   #2
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Re: Brakes dragging 1963 C20

I’m thinking the whole shoe assembly pivots when the brakes are applied, and since the shoes are worn there is more room to pivot and the shoes get ‘stuck’ in the drum. Can’t really see what else could be going on.

Going to get new shoes in there and see if it makes a difference.
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Old 04-05-2021, 09:33 AM   #3
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Re: Brakes dragging 1963 C20

It looks like the adjustment is pretty far out based on the exposed thread @ the star-wheel indicating the shoes are worn (it's hard to tell from the posted images). I would try the new shoes & have the drums checked for out of roundness.
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Old 04-05-2021, 10:41 AM   #4
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Re: Brakes dragging 1963 C20

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Originally Posted by SCOTI View Post
It looks like the adjustment is pretty far out based on the exposed thread @ the star-wheel indicating the shoes are worn (it's hard to tell from the posted images). I would try the new shoes & have the drums checked for out of roundness.
Shoes are new, just got these last week. It’s probably the drum.
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Old 04-05-2021, 12:36 PM   #5
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Re: Brakes dragging 1963 C20

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Shoes are new, just got these last week. It’s probably the drum.
Ahh.... It's difficult to tell from the pic. I would have the drums inspected & run-out measured.
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

Cubic inches is like Indiana Jones with a cheap pistol.
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Old 04-05-2021, 12:47 PM   #6
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Re: Brakes dragging 1963 C20

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Ahh.... It's difficult to tell from the pic. I would have the drums inspected & run-out measured.
Don’t really want to put any more money into this setup; the 74 C20 cross member is going in soon.
Was just trying to get it to work for a few more weeks.

These are new brake shoes and it seems the lining is rather thin.
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Last edited by Asshat; 04-05-2021 at 01:03 PM.
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Old 04-05-2021, 01:07 PM   #7
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Re: Brakes dragging 1963 C20

I would agree based on that image.
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Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive.
It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar.....

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Old 04-05-2021, 07:01 PM   #8
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Re: Brakes dragging 1963 C20

One thing I do not recall, is which brake adjuster is on which side. I believe the right hand thread adjuster goes on the driver side. I wonder if I have it switched.

Not sure if this would matter though, since these are not automatic adjusters. The spring holds the adjuster in place and it must be manually adjusted.
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Old 04-05-2021, 10:17 PM   #9
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Re: Brakes dragging 1963 C20

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Originally Posted by Asshat View Post
One thing I do not recall, is which brake adjuster is on which side. I believe the right hand thread adjuster goes on the driver side. I wonder if I have it switched.

Not sure if this would matter though, since these are not automatic adjusters. The spring holds the adjuster in place and it must be manually adjusted.
I checked and they were correct.

Since the leading shoe was so thin, I thought, why not use the extra set and have two trailing shoes. Both sets are new, so I took the thicker trailing shoe and placed it in place of the leading shoe. So far, the brakes are not dragging or sticking. Hopefully this will just buy me some driving time until I get the new cross member in place.
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