<VV> Brakes grabbing

Stephen Upham contactsmu at sbcglobal.net
Sun Jul 26 12:17:17 EDT 2009


I took apart, cleaned, and lubricated the "star" wheels when I  
replaced the rear hoses.  I think that pulling the drums and having  
them check for round is the next step.  I'll let you know what I  
find.  It may not be until Monday afternoon as there are "honey-do's"  
and family time to attended to for the rest of the day.  I can't wait  
until my son (4) and daughter (1) are old enough to mechanic, then  
family time can BE the car ...GGG.

Stephen

On Jul 26, 2009, at 11:03 AM, James Davis wrote:

> Fronts are 9.5x2 inch shoes and the rears are 9.5x2.5, so none of  
> the front stuff fits the rear except the brake springs.  There are  
> several problems that could cause you scraping.  Usually the self  
> adjusting cams need to be clearanced.  This will give you some more  
> petal travel.  You can have your drums checked for roundness.  They  
> usually will do it for free.
> Jim Davis
>
> Stephen Upham wrote:
>> I have another set of shoes that I could put on the passenger  
>> side  front (do they fit on the back also? no mention of this in  
>> the '65  manual, the Basics book, or ...Keep Your Corvair Alive).   
>> Only the  front driver's shoe has 500 miles on it.  I'm almost 100  
>> percent sure  that the shoes are installed in the correct order;  
>> longer in back,  shorter to the front on each wheel (although it  
>> is not mentioned in  the '65 manual, the Basics book, or in  
>> Finch's book).  There isn't  any pedal vibration, which at least  
>> indicates that the front are not  warped (according to the Basics  
>> book).
>>
>>
>> Stephen
>>
>>
>> On Jul 26, 2009, at 10:19 AM, Dennis Pleau wrote:
>>
>>
>>> 1. Miss-match of shoes on the front?
>>> 2. 500 mile shoes haven't bedded completely yet?
>>> 3. Reversal of the primary and secondary shoe somewhere?
>>>
>>> I'm sure others will also have ideas.
>>>
>>> dp
>>>
>>> -----Original Message-----
>>> From: virtualvairs-bounces at corvair.org
>>> [mailto:virtualvairs-bounces at corvair.org] On Behalf Of Stephen Upham
>>> Sent: Sunday, July 26, 2009 7:59 AM
>>> To: Virtual Vairs
>>> Subject: <VV> Brakes grabbing
>>>
>>> I put the Monza up in the air to work on a couple of items.  The
>>> major item is the brake problem.  The history on the brakes is: all
>>> of the shoes have about 5 thousand miles on them except for the  
>>> front
>>> drivers that was replaced about 500 miles ago due to a leaking wheel
>>> cylinder that was messed up by a rookie mechanic (that would be me -
>>> I now know not to apply the brakes before reinstalling the drums).
>>> Except for the master cylinder conversion, turning of the drums, the
>>> overhaul of all but the driver's side wheel cylinder and  
>>> installation
>>> of the rear shoes, all of the work has been done by me.  The other
>>> work was done by a club member.  All of the wheel cylinders have  
>>> been
>>> overhauled, and as far as I know at this moment, are not leaking (I
>>> may learn different when I take off the drums, but I really don't
>>> suspect this as the cause).  The drums were turned (on advise before
>>> I knew better).  The master has been changed to a dual cylinder and
>>> yes, it was bench bled.  There has been no loss of fluid from the
>>> reservoir.  The fluid was bled and changed to DOT 4 about 500 miles
>>> ago.  All of the hoses have been replaced 5000 miles ago in front,
>>> and 500 miles ago in the rear.  The symptoms are : The rear drivers
>>> wheel rolls free from 9-3 o'clock as observed on the valve stem and
>>> has drag from 3-9, the rear passenger is free from 6-11 and drags
>>> hard from 11-6, the front drivers is free from 7-12 and drags very
>>> slightly from 12-7, and the front passenger is free from 7-11 and
>>> drags slightly from 11-7.  I haven't removed the tires and drums
>>> yet.  What could be the cause and what should I be looking for  
>>> when I
>>> remove the drums?
>>>
>>> Stephen Upham
>>>
>>>
>>>
>>
>



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