My back right Brake/Wheel Cylinder keeps bursting. In the last 6 months I have replaced it 3 times. The last two times being in the last 2 weeks. Each time I‘ve replaced it I‘ve replaced the brake shoe, that was ruined from brake fluid that leaked from the cylinder, the entire Spring kit, and of course the Cylinder itself. And yes, the brakes were bled before replacing each time. Also, the left brake system is never ruined. The shoe,Cylinder,and Spring Kit were all still good each time. Regardless I replaced both sides each time. What could be the problem?
Sounds like your brake drum is the cause. I'll bet dinner that the drum has been machined too much and the maximum inside diameter has been exceeded. Many modern drums can only be turned one time and then must be replaced. Replace both brake drums with new ones and you should be good to go.
IF your brake drum is excessively worn inside, it will cause the cylinder to over extend, and LEAK. Improper SHOES will also cause this. So get NEW drums and be SURE you are using the correct SHOE inserts. Most brake systems are designed so that the drun will wear out ast the same rate as the shoes do. They use LIGHTWEIGHT and thin drum assemblies that simply are NOT reusable after the shoes wear out. GOOD LUCK!!
