Disc brake, brake actuation mechanism for such a disc brake and method for brake adjustment

A method of adjusting a clearance between a brake pad and a brake disc of a disc brake to a predefined value, the disc brake having an amplification mechanism for introducing a clamping force, a thrust element for transmitting the clamping force via a brake pad onto the brake disc, in which, at the release state of the disc brake, a clearance is set between said brake pad and the brake disc, a first automatic brake adjuster including a torque limiting clutch and a first one-way clutch and a second automatic brake adjuster including a second one-way clutch, performing the steps of:

• reducing excessive clearance between the brake pad and the brake disc with the first automatic brake adjuster during brake actuation motion, which excessive clearance results from the actual wear of the brake pad and/or of the brake disc, during brake actuation motion before the brake pad comes into force contact with the brake disc;
• and
• increasing the clearance between the brake pad and the brake disc with the second automatic brake adjuster through an angular slack of the second one-way clutch during brake release motion after the brake pad has lost force contact with the brake disc.