What to know about the Parking Brake Drum:
Your primary braking system is an importantpart of your vehicle. However, there’s a second braking system that’s just as important, although not as clear. Your parking brake is in controlof keeping your car safely in one spot when you’re parked on a grade, and for ensuring that the weight of the car doesn’t rest on the transmission.
The parking brake is started by either pulling a lever or pushing an auxiliary brake pedal, which pulls a cable that runs beneath the car from the cabin to the rear wheels. This cable then pulls on the actuator within the parking brake drum, forcing the shoes apart and holding your vehicle in place.
In a disc-brake arrangement, the drum is built into the back of the rear brake discs. In a drum-brake system, the parking brake uses the existing drums and shoes in the rear. After sometime and through normal use, the parking brake parts wear. The shoes will wear out well before the drum, but the drum can spoil before that happens.
Facts to Note:
Parking brake drum condition can be assessed during brake system inspections.
Drum resurfacing is a normal part of vehicle maintenance and should be done frequently.
Shoe replacement is not required as frequently as pad replacement because it goes through inspection during regular maintenance.
Driving with your parking brake engaged will quickly reduce the lifespan of both the shoes and the parking brake drum.
How to Fix:
The vehicle is lifted and supported on jack stands and the rear wheels are detached
The faulty parking brake drums are detached
The new parking brake drums are installed
The wheels are reinstalled and the vehicle is removed from jack stands
The vehicle is tested and checked for parking brake operation
While the parking brake actuation system is separate from your primary braking system, they’re both tied together. Brake wear (both shoe and parking brake drum) is normal and must be rectified with regular maintenance, including resurfacing and shoe replacement. Have your vehicle maintained by your expert mechanics, who are capable of inspecting your brakes and providing advice on maintenance intervals for your parking brake drum.
Common symptoms indicating you may need to change the Parking Brake Drum:
Weak braking action
Parking brake doesn’t hold fast when engaged
Importanceof this service:
While parking brake drums will last for a very long time, they can be damaged in accidents and by driving with the parking brake engaged. If you suspect that your parking brake drum needs to be resurfaced, the shoes need to be changed, or that there is damage to the drum, have the drum checked and mendedstraightaway.