[T3] brakes

Fiesta Cranberry fiestacranberry at gmail.com
Sat May 2 17:49:49 PDT 2015

Date: Fri, 01 May 2015 18:47:40 -0400
From: Sean Bartnik <sjbartnik at mac.com>
To: type3 at vwtype3.org
Subject: Re: [T3] type3-vwtype3.org Digest, Vol 56, Issue 1
Message-ID: <ED972F85-BA24-41CE-ADE8-C24A0C7D8080 at mac.com>
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In my experience, that kind of pulsating feeling is due to a rotor or drum
that is out of round.  I should say a drum that is out of round or a rotor
that is warped.  In a hydraulic system like auto brakes, since the fluid is
not compressible, if you have an out-of-round rotating component, you will
feel the pushback through the pedal when the out-of-round component forces
the piston (of the caliper or wheel cylinder) back against your foot

If a drum or rotor is out of round, it needs to be turned to true it, this
involves removing the high spot by turning the part on a lathe.

If the issue is with a rear brake you are likely to feel it only through
the pedal and maybe through the seat of your pants when braking.  If the
issue is with a front brake you usually will feel the vibration through the
steering wheel as well when braking.  But since you have a noise from the
rear it sounds like the rear might be the first place to look.

OK, thanks---this is pretty much what I suspected.  I don't feel it thru
the steering wheel, altho my steering is pretty loose.  I do feel it thru
my "seat" :)  and almost thru the floor of the car.  I'm pretty sure it's
coming from the rear.

Do you guys think the shop caused this?  It wasn't happenng before.


"I wrestled with reality for 36 years, and I'm happy to say I've finally
won out over it."
                                                  ---Elwood P. Dowd
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