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Drum Brake Styles. Non-Servo. Variations of non-Servo . Variations of non-Servo. Non-Servo. On Front Wheel Drive (FWD) vehicles it is necessary to have an i neffective brake on the rear of the car. Servo. Servo Action. Wants to follow the drum. Servo Action.
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Non-Servo On Front Wheel Drive (FWD) vehicles it is necessary to have an ineffective brake on the rear of the car.
Servo Action Wants to follow the drum
Servo Action The rear shoe does most of the work Wedging action
It is very important that the Primary shoe is always facing toward the front of the car