BRAKE SHOE CLEARANCE Brake shoe adjustment re-establishes the brake lining to drum clearance, and compensates for lining wear. The hydraulic brakes are adjusted by the brake wheel cylinder adjusting nut through the service holes of the brake backing plate. The brake drums should be at normal room temperature when the brake shoes are adjusted. If the shoes are adjusted when the drums are hot and expanded, the shoes may drag as the drum cools and contracts. 1. Raise the vehicle until the wheels clear the floor. 2. Release the parking brake plunger completely and check the rear wheels to turn freely. 3. Remove the shoe adjusting hole plugs from the brake backing plate. 4. Expand the brake shoe by turning the wheel cylinder adjusting nut with the adjusting tool until the shoe is tight against the drum. At this time, pump the brake pedal a few times to make sure that the shoes contact the drum onto the entire surface. If the wheel still turns after removing the foot from the brake pedal, turn the adjusting nut further until the wheel is locked completely. 5. Back off the adjusting nut 5 notches if the shoe still drags lightly on the drum, then back off the adjusting nut 1 to 2 additional notches. Check if the wheel rotates freely. Re-install the shoe adjusting hole plugs. ***For the wheel with two wheel cylinders, never adjust the shoes with the two adjusting nuts at the same time.*** 6. Perform the same operations on each brake shoe. After all brake shoes have been properly adjusted, lower the vehicle. Road test the vehicle on a level road and check the following items. Perform the road test only to determine whether the brake will apply properly, and the vehicle can be stopped safely. a. All wheels should lock. b. The brake effectiveness is well balanced on both the right and left. c. Check if the brakes are noisy. |
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