why do the rear brake cylinders keep blowing out.

Asked by morninwood1 Feb 06, 2013 at 11:54 AM about the 1984 Volkswagen Vanagon Camper Passenger Van

Question type: Maintenance & Repair

I replaced the brake shoes and cylinders and bled the system it looked and worked fine for about a month. then
the right rear cylinder blew out. replaced cylinder again. about a month after that both rear cylinders blew out. Any
ideas on whats making that happen?

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James answered 11 years ago

are you running the correct diameter shoes? ok how about shoe to drum clearence should be slight rub always

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Lionel answered 11 years ago

Hi The brake drums are now worn to much out of spec. so the cylinder as to go out to far and blows out . an easy fix with a new set of drums. PS at one time we could a kit that would go at the but tum of the shoe to make the shoes go out farther at the butt-um to but the shoe out at the but-tum when the drums would weir out of spec,. and that would stop the cylinder from blowing out . good luck

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