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'65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 03, 2022 03:47PM

I have redone my whole (stock) brake system.
The right rear brake keeps overtightening 'self adjusting'.
I cannot figure out why this is happening.
Any guidance would be apreciated.
Thanks,
Al

Re: '65 Corsa Rear Brakes
Posted by: Wagon Master ()
Date: August 03, 2022 03:57PM

Bent adjusting lever?

Re: '65 Corsa Rear Brakes
Posted by: 2-ragtops ()
Date: August 03, 2022 04:24PM

Did you put the left adjusting mechanism on the right side or perhaps flipped it over.

Bob Bauer

Show-Me Corvairs
1966 Monza Convert 140 P/G with A/C, plastic wheel with tele-column am-fm posi-traction
1928 Ford Model A 2 door sedan
House Springs, Missouri

Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 03, 2022 04:49PM

I do not believe it is bent or incorrect?
Check me out on the photo.

Attachments:
Re: '65 Corsa Rear Brakes
Posted by: ROD ()
Date: August 03, 2022 05:02PM

like 2ragtops mentioned, the adjusters shown can be L or R hand thread worth checking who knows whats in there these days

Rod Tetrault
El Cajon , CA
65 Corsa Yenko Clone / 65 Corsa EO Creampuff Vert
66 Corsa "JIMISH" Mid engine Turbo LS1 currently 2nd fastest Corvair in the USA
Corvair powered Buggy x 3
Enough hidden parts to build a space ship


Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 03, 2022 05:11PM

Thanks Rod,
Pushing downward on the adjusting wheel (as it is shown) tightens the brakes.
I believe that is correct?

Re: '65 Corsa Rear Brakes
Posted by: Frank DuVal ()
Date: August 03, 2022 07:59PM

The lever pushing down on the adjusting wheel should tighten the brakes.

Under the cap on the adjuster you will see an R or L indicating which side the adjuster goes on.

First step, clean all the dirt from every part in the brake assembly. A water squirt bottle and wire brush/rag is good and cheaper than brake cleaner. Let dirty water collect on newspaper (a what???) and throw away. And both right and left assemblies. Lubricate the areas shown in the shop manual.

Frank DuVal

Fredericksburg, VA

Re: '65 Corsa Rear Brakes
Posted by: Wagon Master ()
Date: August 03, 2022 08:11PM

[corvaircenter.com]

Friends Don't Let Friends Drive Stock
Been Aircooled Since 1973
Northwest Ohio 45840

Re: '65 Corsa Rear Brakes
Posted by: junkman ()
Date: August 03, 2022 08:49PM

Need a picture of the entire brake assembly to diagnose the problem by remote viewing. My guess is that the wire cable is binding on the pivot point or some other milady with the installation.
To clean brakes, I spray with dishwashing liquid mixed with water and then pressure washer away all dirt. I also lubricate the pads on the backing plate so the shoes don't hand up. If they have worn a groove in the backing plate, I try to file it smooth.
Also, some of the new brake shoes have identical primary and secondary lining materials and lengths. You must shorten the primary shoe lining material for proper braking. This was discussed a year or two ago with Ken Hand giving instructions on how much to remove. I would just use the old shoes as a guide.

---------------------------------------------------------------------------------------------------------------
Woodstock CT... Located on the Connecticut / Massachusetts border, approximately 6 miles from the center of Southbridge MA. About 45 minutes from Hartford CT. 1 1/2 hours West of Boston MA. Woodstock CT to Los Angeles CA 2,937.1 miles. 1 Mile as the crow flies to Big Bird's nest.

Re: '65 Corsa Rear Brakes
Posted by: joelsplace ()
Date: August 03, 2022 10:15PM

If the wrong direction adjuster is installed it won't adjust at all.

Joel
Northlake, TX
5 Ultravans, 138 Corvairs and counting...

Re: '65 Corsa Rear Brakes
Posted by: AZ Troy ()
Date: August 03, 2022 10:24PM

Alberto Wrote:
-------------------------------------------------------
> I have redone my whole (stock) brake system.
> The right rear brake keeps overtightening 'self adjusting'.
> I cannot figure out why this is happening.
> Any guidance would be apreciated.
> Thanks,
> Al


How long ago did you redo the complete brake system? As dirty as it is I bet it was a long time ago.

A bigger photo will confirm that the front shoe is on the front & the rear on the rear.


.

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

Re: '65 Corsa Rear Brakes
Posted by: Lane66m ()
Date: August 04, 2022 03:24AM

I would like to see upper half of the braking mechanism where we can see top side of adjusing lever and its link and anything near it.

Something is activating the lever to move the adjuster wheel.

Re: '65 Corsa Rear Brakes
Posted by: JimBrandberg ()
Date: August 04, 2022 04:05AM

The adjuster works when you apply the brakes in Reverse.
Sorry I had typed out a whole wrong answer and it wouldn't let me delete.

Jim Brandberg
Isanti, MN
CorvairRepair.com






Edited 3 time(s). Last edit at 08/04/2022 04:10AM by JimBrandberg.

Re: '65 Corsa Rear Brakes
Posted by: vairmech ()
Date: August 04, 2022 04:17AM

AZ Troy Wrote:
-------------------------------------------------------
> Alberto Wrote:
> -------------------------------------------------------
> > I have redone my whole (stock) brake system.
> > The right rear brake keeps overtightening 'self adjusting'.
> > I cannot figure out why this is happening.
> > Any guidance would be apreciated.
> > Thanks,
> > Al
>
>
> How long ago did you redo the complete brake system? As dirty as it is I bet it was a long time ago.
>
> A bigger photo will confirm that the front shoe is on the front & the rear on the rear.
>
>
> .
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Thank You! My thoughts exactly.

Ken Hand
Handy Car Care
248 613 8586

Vairmech@aol.com

Re: '65 Corsa Rear Brakes
Posted by: jjohnsonjo ()
Date: August 04, 2022 08:21AM

I'm not seeing any threads showing on the adjuster, at least the way I see it. As short as it gets. I had this happen and needed to file the slots that the adjuster slides into or they would drag , overheat and get very tight.

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


Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 04, 2022 10:17AM

WOW! Thank you all for your help!
Let me reply:

1.After reviewing all of the info. sent regarding the adjuster & star wheel, I am sure that it is the on the correct side, tightens in te correct direction & has been cleand & is operating correctly. (It is currently adjusted IN all of the way (brakes are as loose as they can be.)

2. I redid (& cleaned) the brakes less than 500 miles ago. The dirt you see is from them constantly rubbing.

3. I believe it is, but, I will doublecheck that the shorter pad is on the front. (My pictures are too big to attach)


Given all of this info. I wonder if the drum could be warped or out of round? I did have it 'turned' when I did the brakes and nothing was said about that! I will doublecheck that also.

Thank you ALL!

Re: '65 Corsa Rear Brakes
Posted by: jjohnsonjo ()
Date: August 04, 2022 10:36AM

It sounds like the lining is too thick, file the notches and see it helps. Sometimes suppliers make them thicker to compensate for worn drums.

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


Re: '65 Corsa Rear Brakes
Posted by: Alberto ()
Date: August 04, 2022 10:50AM

JJOHNSONJO,
What notches are you referring to? On the star wheel?

Re: '65 Corsa Rear Brakes
Posted by: Wagon Master ()
Date: August 04, 2022 10:55AM

If you're confident you understand how the self adjusting system works and it's all in order and functioning properly, it's time to look elsewhere. Two places that can act like over adjusted shoes are one or both wheel cyl. pistons sporadically hanging up in their bores. Also the inner liner of the rubber brake hose can collapse and act like a one way check valve.
Once the shoes "over adjust" how do you get the drum off?

Re: '65 Corsa Rear Brakes
Posted by: Wagon Master ()
Date: August 04, 2022 11:02AM

Alberto Wrote:
-------------------------------------------------------
> JJOHNSONJO,
> What notches are you referring to? On the star wheel?

No. The notches where the adjusters fit over the shoes. Increasing their depth, allows the shoes to collapse more, reducing the diameter. You can also trim/shorten the internally threaded part of the adjuster. Making it shorter when screwed all the way together.

Friends Don't Let Friends Drive Stock
Been Aircooled Since 1973
Northwest Ohio 45840

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