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Re: Brakes last 5K then shimmy & shake in front end 700 1990

posted by  someone claiming to be Herman, Cherry Turbos on  Fri Dec 7 11:01 CST 2001 [RELATED]

When I first got into Volvos I had a similar problem on my 744 Turbo. I suspected warping on my Brembos. I went through three sets and finally discovered it wasn't warping but hot-spotting. The harder the metal the less friction the pads create. With a hot spot, the rotor is hardened at that point and the pad slides past that spot and grips at the point at which the hardening ends. The resulting feel in the pedal is a pulsating or shimmy. I ended up changing pad brands and haven't had the problem since on my 745 T wagon even with non drilled rotors.





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