<VV> Brakes

[RoboMan91324 at aol.com]

Back when I was working my way through school as a mechanic,  the boss told 
me there were two benefits of taking a deep and course cut on  every drum 
we worked on.  One was that after a relatively few brake jobs,  the drum 
diameter would be out of spec and would require replacement.   $$$  The second 
was that the ridges resulting from the course cut would  take thousands of 
miles worth of lining off the shoes before the drums smoothed  out.  Also $$$  
I always took a shallow fine cut whenever  possible.  I found that this was 
all that was required of the vast number  of brake jobs.  This applied to 
disk brake rotors as well.
 
Doc
~~~~~~~~~~~~~~~~~~~~~~~~~
 
In a message dated 12/23/2014 11:13:39 A.M. Pacific Standard Time,  
virtualvairs-request at corvair.org writes:

Message:  2
Date: Tue, 23 Dec 2014 17:45:07 +0000
From: Joel McGregor  <joel at joelsplace.com>
To: "virtualvairs at corvair.org"  <virtualvairs at corvair.org>
Subject: Re: <VV>  Brakes
Message-ID:
<27D1EC0369826D478297DD86D9DE5E2C7FCE71CF at 2012SBS.joelsplace.local>
Content-Type:  text/plain; charset="us-ascii"

Turning the drums won't help the arc  match unless you just get lucky.  
Shops used to have a machine to grind  the shoes to match the arc of the drum.  
I wish I had one.  I do  have a brake lathe.
The problem I've found with most shops turning drums is  that they take a 
single big cut so they won't have to do it twice.  I  take as little off as 
possible to clean them up because they are almost always  out of round and 
have high/low spots no matter what they look like.  The  car will stop better 
with round drums.
Obviously you can get away without  doing it and I probably wouldn't turn 
them as often if I didn't have a brake  lathe.

Joel  McGregor