Why do drum brakes lock up?
Rear drum brakes can lock for several reasons. One reason could be a defective wheel cylinder, which is part of the brake system. Your parking brake cable could also be adjusted too tight. The slightest pressure on the brake pedal, will then cause the brakes to work at full force, causing the lock up.
How do you move a seized drum brake?
How to Loosen a Seized Brake
- Remove the wheel and tap the calipers with a rubber mallet.
- If you have drum brakes and the brake shoes are stuck on the wear ridge within the drums, rotate the drum until the access hole lines up with the adjuster inside.
What is the difference between a hub and a drum?
Different properties: The wheel hub is the rotating part of the wheel core connected with the inner profile wheel steel by the column. Brake drum is the friction couple of drum brake, except for the strength and stiffness required as a component.