Brake Shoe: Adjustments

DRUM BRAKE SHOE ADJUSTMENT

NOTE: Before proceeding, Technician Safety Information Vehicle Damage Warnings .

1. Verify the parking brake lever is in the fully released position.
2. Raise and support the vehicle. Service and Repair

NOTE: Perform the following steps on each rear drum brake assembly as necessary.





3. Remove the wheel mounting nuts (3), then the rear tire and wheel assembly.





4. Remove any brake drum retaining clips (5), then the drum (6). Removal










5. Using a Brake Shoe Gauge (1), Special Tool C-3919 or equivalent, measure the inside diameter of the brake drum at the center of the shoe contact area. Tighten the Gauge set-screw at this measurement.










6. Place the other side of the brake shoe gauge (1) over the brake shoes as shown.
7. Adjust the shoe diameter to the setting on the gauge. To adjust the shoe diameter, turn the adjuster-screw star-wheel using a screwdriver inserted through the adjusting hole in the rear of the shoe support plate. Once the tip of the screwdriver contacts the star-wheel teeth, move the handle of tool downward using the support plate as a pivot to adjust the shoes outward.





8. Once the shoe diameter is set, remove the tool and install the brake drum (6). Installation
9. Turn the brake drum. A slight drag should be felt while rotating the drum. If not, repeat the above procedure.





10. Install the tire and wheel assembly (1) Tires and Wheels - Installation. Install and tighten wheel mounting nuts (3) to 135 Nm (100 ft. lbs.).
11. After adjusting both rear drum brakes as necessary, lower the vehicle.

12. Apply and release the parking brake lever one time after the adjustment process is completed so the parking brake can readjust itself to the new brake shoe adjustment.
13. Road test the vehicle stopping in both forward and reverse directions. The automatic-adjuster will continue to adjust the brakes as necessary during the road test.