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Showing results for tags 'wheel cylider'.
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Im wondering what issue would cause the rear wheel cylinder ears that hold the brake pads, to shear off? I have a 2006 GMC Sierra 1500 2WD 4.8L with rear drumbrakes. I replaced the rear wheel cylinders and brake shoes on both sides. After 5-10 minuets of driving, i had extremely loud squealing from the rear when braking to a stop. I took off the drums to check and saw that the passenger side wheel cylinder ears had sheared right off, but only on the outside of the truck, not inside ears. The shoe that is towards the front of the truck also was pushed out towards the inside of the drum and was rubbing on the inside facing where the hub sits so that must be what was causing the squealing. But i dont understand what would cause such a force to shear the wheel cylinder ears right off. Drum out of round? Before i replaced the shoes, both passenger and driver side shoes towards the front were almost to the metal shoe backing plate, so thats why i replaced them.
