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American Motors/66 classic disc brakes
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Question
Kevin is it normal for the disc brakes on this model to have a lot of drag compared to modern brakes.
thanks rich
It depends on what you consider a lot of drag.
Disc brakes as originally designed on cars do not work as efficiently as the disc brakes today.
When the brakes are applied, then released, the square shaped "O" ring seal in the caliper is suppose to pull the caliper piston slightly in the bore, thus removing pressure from the rotor. Over time, these square seals dry up and lose their resiliency. Corrosion also forms around the caliper pistons. This will cause the brakes to drag excessively.
Compared to modern brakes? Disc brakes from 1966 do drag more; however you will have to determine if it is excessive.
If you try to spin the wheel and it doesn't spin at all, it's probably excessive. It might be time to overhaul the calipers.
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Kevin Pilotte
Expertise
I can answer many technical questions relating to AMC vehicles prior to 1979. I also have experience with Rambler & Nash vehicles.
Experience
I am a former AMC technician, service writer and service manager. I have worked in AMC dealers in Illinois in the 70's. After college, I was a Field Service Rep for American Motors Sales Corporation, working out of the Chicago Zone office. I traveled to AMC dealers assisting in the diagnosis and repair of AMC vehicles. I was also the Area Training Manager for DeLorean Motor Company. I have 10+ years as an Automotive Instructor. I have modified and restored
numerous AMC vehicles. I have been working on AMC vehicles for over 30 years.
Organizations
I have been an ASE Certified Master Technician since 1975. This includes L1. I am also currently a Toyota Certified Master Diagnostic Technician.
Publications
I have articles in "American Motoring", the official publication of the American Motors Owners Association. They are the largest AMC club in the world.
Education/Credentials
I have a certificate I printed out from a website.
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