911 E-Brake Adjustment
The emergency, or parking brake, uses a small brake drum inside each rear rotor. It is mechanically operated by a cable system, and is independent of the hydraulic service brake system. The parking brake my need periodic adjustment of the shoes to compensate for wear. Here is how to do it:
1. Raise the rear of the car, place it on jack stands, and remove the rear wheels.
2. Ensure that the parking brake is fully released.
3. Rotate the brake rotor until the brake shoe adjuster (star wheel) is visible through the brake adjustment hole (located between two of the lug bolts).
4. Using a screwdriver, tighten the brake shoe adjuster until the rotor can no longer be turned by hand.
5. Loosen the adjuster four clicks, and check for free rotation of the rotor. If necessary, loosen the adjuster more.
6. Repeat for other side.
The parking brake cable may need adjustment if the parking brake lever needs to be pulled up more than 45 clicks to lock the rear wheels, or if one wheel stops before the other when the parking brake is applied.
Working underneath the rear of the car and with the parking brake fully released, adjust cables at locking nuts so that equal amounts of thread show on each cable. Make sure that is slight axial (in and out) play in both cables at the trailing arms. Check again to be sure that both wheels turn freely with the parking brake released.