2001 GMC Safari Repair Question
Topics covered: Wheel, Brake shoes, Piston.
Mileage: 96,000 miles.
Mileage: 96,000 miles.
Asked on January 17, 2013
GMC Safari Wheel Problem
Rear brake shoes have a short pad or a long pad on each metal shoe. does the short pad go towards the from of the vehicle or the rear? Why does the orientation matter?
Asked by (pending member)Answer
Replied on January 18, 2013
The short lining always goes toward the front. It's job is to grab the rotating drum and try to turn with it. That pushes on the star wheel adjuster to push the bottom of the rear shoe into the drum. The rear piston in the wheel cylinder pushes the top of the rear shoe into the drum. Both forces act on the rear shoe, (the longer lining) so they call it a "duo-servo drum brake.