When the brake cylinder pushes the two shoes apart, the leading shoe "wraps" with the rotating drum. This wrapping pushes the trailing shoe through the transfer bar into tighter contact with the drum providing the servo action.
Notice that your leading shoe nearly always has more brake lining than the trailing shoe and also notice that it requires more pedal effort to stop a car with drum brakes when it is going in reverse than it does when the car is moving the same speed in the forward direction.
( 1 ) on each of the rear drum brakes
What about 1993 Pontiac drum brakes, please be specific.
Drum brakes.
This will greatly depend on what kind of brakes you have and which parts you are trying to replace. Do you have disc or drum brakes? If you have disc brakes, do you want to replace the calipers, pads, or rotors? If you have drum brakes, do you want to replace the drum, or the shoes?
No. Drum brakes expand inside a rotating drum to stop the vehicle, disc brakes squeeze in against a rotating disc.
The rear brakes on a 1984 Chevy truck are drum brakes.
Disc brakes and drum brakes.
Only the rear brakes are drum brakes. The front brakes are disc brakes. To answer your question, twist the end wing nut by your drum brake. It tightens and adjusts how much you have to press on your rear brake lever.
No, they are inferior to disc brakes. Drum brakes were used from the beginning of the auto up until the late 60s. Drum brakes are more prone to overheating than disc brakes. Disc brakes also shed water much better than drum brakes which improves stopping distance in wet conditions. Disc brakes apply pressure more evenly than drum brakes thus improving stopping distance. Disc brakes are superior in every way.
Disc brakes may have been an option but it would normally come stock with drum brakes.
A 1996 camaro has the same DISK brakes as a 2001. It does not have drum brakes.
Drum brakes do not have the stopping ability of disc brakes, so no not harder, but slower.