?Check the condition of the drum cylinders, and "turn" them, if necessary. "Turning" a drum cylinder is placing it onto a lathe and scraping off the wear and corrosion. Most auto parts stores and brake shops provide this service for a small fee, but none will turn them if they are too badly worn. There is a standard thickness that must remain on the cylinder’s inner wall to safely reuse them. If they cannot be reused, then they must be replaced. Repeat steps 1 6 for the brakes on the remaining wheels.
Bleed the braking system at the master cylinder, once all shoes have been replaced. In some Volkswagen vehicles, the type of master cylinder may vary, but for most Beetles (pre 1975) it is directly attached to the brake pedal, in front of the floor pan. Using the universal bleeding kit, pressure bleed the system according to the instructions provided. Loosen the "bleeding nipple" on the top back side of the brake, behind the wheel cylinder, before pressurizing the master cylinder. Each brake line must be bled individually. Once all of the air has been purged from the system, the brake pedal should have a good amount of resistance and stop the vehicle smoothly.
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