Re: IML: Brakes Pulling

["Frederick Joslin" <fljoslin@xxxxxxxx>]

Hi Nick:

This may be what I was alluding to in that these brakes appear to be very sensitive to the runout of the rotors.

Assume that the slightly out-of-spec run out causes the pulling.

 

If you get both rotors in spec, you may eliminate the pulling. However, it would not take much to get one of the rotors out of spec again and generate a pull!  

Get them both out of spec and you may reduce the pull, but have significant braking resistance all of the time.

 

The brakes on my 69 did not pull prior to the rebuild, but it was all that I could do to turn the wheels by hand with the front end off the ground which I did not think was good.

 

----- Original Message -----
From: nicholasadamo@xxxxxxx
To: mailing-list@xxxxxxxxxxxxxxxx
Subject: Re: IML: Brakes Pulling
Date: Tue, 24 Jul 2007 21:37:51 -0400

Well, if it makes you feel any better Fred, I replaced all the brake components on my 67 Chrysler 300 with the Budd discs. Used the DuraBrake rotors and Dot 4 Valvoline synthetic brake fluid.  My first drive of the car, the brakes felt good but there was a DEFINITE pull to the right when braking.

The car was still being worked on by my restoration team. I told them to check that out. They said same thing about the rotor run-out. They turned the rotors to spec and the pull was gone. I've driven about 1,000 miles since then. Now, for some reason, I'm getting a pull to the left....go figure!


-----Original Message-----
From: Eric <gearhead@xxxxxxxxxxx>
To: mailing-list@xxxxxxxxxxxxxxxx
Sent: Sun, 22 Jul 2007 7:23 pm
Subject: IML: Brakes Pulling

As well, on a Mercedes mailing list I'm on, a few years back it was noted that a govt study showed that rotors do not necessarily need to be turned unless they are warped. There was no appreciable difference in braking ability nor in wear. 
 
For the pulling to one side, most often steering components or bushings in the suspension are at fault. If one wheel turns by hand ALOT more difficulty, maybe therein lies the trouble, but it would have to be alot of resistance. Maybe a seized caliper? Dick B. is spotlessly on the mark as a rule, hoses should be renewed periodically. 
 
Eric 
Lebanon, Oregon 
_________________________________________________________ 
From: "john sadowski" <jsadowski@xxxxxxx> 
Subject: Re: IML: 69 Lebaron brakes pulling 
If you notice in the service manual that it says the rotors must not be = 
turned. Some think this is B/S & any rotor should be able to be turned. 
John  
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Fred Joslin