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Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 04, 2022 11:06AM

WAGONMASTER,
The drums still come off fairly easily.

This could be the problem:
"...one or both wheel cyl. pistons sporadically hanging up in their bores..."
The hoses & wheel cyl. are all new.

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Re: '65 Corsa Rear Brakes
Posted by: KenHenry ()
Date: August 04, 2022 01:30PM

I have also experienced tight rear brakes due the rubber hose collapsing and failing to release pressure from the wheel cylinders with my foot off the brake. Ken

Ken Henry, Rochester, NY USA
1965 Corvair Corsa
140 hp, 4 speed

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Re: '65 Corsa Rear Brakes
Posted by: Wagon Master ()
Date: August 04, 2022 07:06PM

Alberto Wrote:
-------------------------------------------------------
> The right rear brake keeps overtightening 'self adjusting'.
> Any guidance would be apreciated.
> Thanks,
> Al

Please explain to us the symptoms of your right rear brake over adjusting, when the drum can be removed normally. confused smiley

Been aircooled since 1973
Northwest Ohio 45840

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Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 05, 2022 07:57AM

Thank you all for your help.
I am still not sure what the probem is, however when I disassembledeverything, I found that the spring in the picture was there, but broken & crushed. Could this be the culprit?

Attachments:
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Re: '65 Corsa Rear Brakes
Posted by: jjohnsonjo ()
Date: August 05, 2022 07:59AM

To the best of my knowledge thats just an anti rattle spring for when the park brake is not actuated.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: '65 Corsa Rear Brakes
Posted by: Frank DuVal ()
Date: August 05, 2022 07:24PM

Quote
Ken
I have also experienced tight rear brakes due the rubber hose collapsing and failing to release pressure from the wheel cylinders with my foot off the brake. Ken

YES! This is the number one reason I replace aged rubber brake hoses. Number two is cracks.

Frank DuVal

Fredericksburg, VA

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Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 06, 2022 09:36AM

KEN & FRANK>
I did replace all hoses when I re-did the brakes. Is there a wayy to determine if the hose is failing?
Or should I just go ahead & replace the hose & wheel cylinder?

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Re: '65 Corsa Rear Brakes
Posted by: Richard ()
Date: August 06, 2022 10:25AM

I thought the problem was with the RIGHT rear.

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Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 06, 2022 09:12PM

I am having the problem with the right side (passenger) rear brake.
You may be confused by the photo which is of the other (drivers) side.
I took that photo because the spring on the side in question was destroyed.

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Re: '65 Corsa Rear Brakes
Posted by: RobertC ()
Date: August 06, 2022 11:06PM

Alberto Wrote:
-------------------------------------------------------
> I am having the problem with the right side (passenger) rear brake.
> You may be confused by the photo which is of the other (drivers) side.
> I took that photo because the spring on the side in question was destroyed.

It might be easier for people to diagnose your problem if you post pictures of the problem side - including showing both shoes...

rather than people guessing based on your written description...

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Re: '65 Corsa Rear Brakes
Posted by: irfgt ()
Date: August 07, 2022 05:41AM

With the aid of a helper, remove the offending brake drum and have the helper slowly apply the brakes. The shoes should expand then retract when brakes are released. If they do not retract, loosen the brake bleeder and see if they retract. If they do the problem is in the hydraulic system holding pressure. If they don't retract you have a problem with the cylinder, backing plate, springs or shoes or park brake.

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Re: '65 Corsa Rear Brakes
Posted by: jjohnsonjo ()
Date: August 07, 2022 05:46AM

I have had bad hoses, it usually pulls to one side or another. It only takes a few minutes to switch hoses from side to side, rather than throwing money at the problem. Also, if you bleed the brakes by using your hand on the brake pedal rather than you foot, you can feel the resistance of a collapsed one.

I'll go back to what I said the first time, file open either the adjuster or the shoe.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa


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Re: '65 Corsa Rear Brakes
Posted by: AZ Troy ()
Date: August 07, 2022 02:22PM

Alberto,
Your "good side" is filthy & wet. Most likely the wheel cylinder is leaking.

In my opinion you need a complete brake system diagnosis because you have more than one issue.

You stated" I have redone my whole (stock) brake system.
The right rear brake keeps over tightening 'self adjusting'.
I cannot figure out why this is happening.
Any guidance would be appreciated.


I don't understand a over tightening self adjuster but the drum can be easily removed. should be the opposite.

A redone brake system should be clean, dry, & mostly dust free.Yours are none of those.

Brakes are not easy for everyone, but seems like everyone tries to do them at home. I would not trust driving a car with brakes lke yours. What are you going to do when a 10 year old girl in a wheel chair rolls out in front of you 7 your brakes are not set up correctly?

I'm not bad mouthing you or your ability. I'm just saying that not everyone can do (or should attempt) every repair.

find a Corvair mechanic or a good brake shop in your area.

If you mixed fluid types, the wheel cylinders can leak, the fluid can coagulate & cause the wheel cylinder pistons to stick or return slowly.

I wish you luck with your choice.






.




.

Troy G. / Scottsdale Arizona

'65 140 Corsa Coupe, White with light blue guts
'66 140 Corsa Coupe - Crown Converted in the '60's, Black with 3 Yellow stripes

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