I had a similar experience on a later model vehicle. It turned out that
when we had some work done on the car the jerks used an air ratchet that put
over 120 LBS of torgue on the lug nuts. When we used the breaks and they
got warm this overtightness caused the rotors to warp. The owners mannual
calls for 90 lbs of torque on the lug nuts. This warping causes a pulsating
sensation during breaking due to the uneven surfaces of the rotors. This is
one cause I'm sure there could be others.
Bartman
rsmith@nckcn.com
OutStandingInMyField
Somewhere on the High Plaines of Kansas
Bartmans Home page: http://www.nckcn.com/homepage/rsmith/bartmans.htm
Classic Truck Links page: http://www.nckcn.com/homepage/rsmith/gctl.htm
Bartmans 51 chevy truck http://www.nckcn.com/homepage/rsmith/bct.htm
The Bone Yard http://www.nckcn.com/homepage/rsmith/boneyard.htm
Classic Truck Gallery http://www.nckcn.com/homepage/rsmith/classic.htm
-----Original Message-----
From: Keith <kvdurand@mail.esc4.com>
To: oletrucks@autox.team.net <oletrucks@autox.team.net>
Date: Tuesday, November 30, 1999 8:56 PM
Subject: Re: [oletrucks] Pulsing brakes
>A caliper that is hanging up can warp a new rotor very quickly. See if any
>wheel drags excessively.
>
>----- Original Message -----
>From: <MKlepp4335@cs.com>
>To: <oletrucks@autox.team.net>
>Sent: Tuesday, November 30, 1999 4:47 PM
>Subject: [oletrucks] Pulsing brakes
>
>
>> Group,
>> I know this question is a little off from the old truck realm, but if I
>don't
>> fix the wife's car, I may not get another chance to work on my old truck.
>> Here's the problem: Pulsing brakes, BAD!! They are really scary
>(vibrating
>> wildly) at speed and more like just annoying when driving slow. I have
>> replaced pads, turned rotors, then replaced rotors, turned rear drums
>without
>> success. I disabled the antilock brakes by pulling fuses -- no
>difference.
>> What could be up with this thing? I wish the brakes worked as well as
the
>> stockers on my '48.
>> Mike Klepp
>> '48 3100
>> Wichita Falls, TX
>> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>>
>
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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