I have a problem with right rear brake. I changed calliper , brake hose and the rest was serviced , greased and checked ten times over but the brakes are still dragging and create a lot of heat. Hand brake was checked and adjusted , is very loose now. What am I missing ? Thanks for suggestions.
Oldsmobile Intrigue 99'. It takes for ever to get respond from alt.autos.oldsmobile . Hand brake is loos all the way. I can recreate dragging by pressing brake pedal . and loose it by pushing piston in the calliper "in".
Drive the car around for an hour or so then come home pull in driveway and put car in park (do not apply the parking brake) then as soon as you take your foot off the brake, immediately jump out and run around to the right rear and loosen the bleed screw.
If you get a nice healthy squirt of fluid then your hydraulic line is still under pressure, I would look for something like bad vacuum booster, binding master cylinder, or kink or crushed brake line, or rust or obstruction in brake line.
If you get no fluid or it just dribbles out, then it's some mechanical obstruction on the right rear.
Another thing to look at, especially on older vehicles, is the brake hose. The rubber flex line to each wheel may be breaking down inside of the hose. It can disintegrate and cause a small flap to form. It can allow the brake fluid to go TO the caliper when you step on the brake (because of the high pressure). The flap can then open up and prevent the fluid from returning back into the caliper. This can cause the brakes to drag since there are no springs to pull the brakes back, they only return the small distance due to the release of pressure. That is , on DISC BRAKES. Drum brakes have springs to pull the shoes back. Something to check. GOOD LUCK
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