1 - brake shield; 2 - rubber cap; 3 - bleed valve; 4 - wheel brake cylinder; 5 - spring; 6 - cap; 7 - piston; 8 return spring; 9 - flat lock washer; 10 - friction lining; 11 - brake shoe; 12 - brake drum
Since August 1983, KADETT D has been equipped with an automatic brake setting system.
When the brake pedal is depressed, the shoes -1- are pressed outward against the drum. This unloads the spacer bar -6-, at the same time the spring -2- pulls down the setting lever -3-. If there is wear on the lining, the setting lever turns the gear -4- on the spacer bar and thus lengthens the spacer bar. The distance between the shoes and the drum remains constant when the brake is inactive.
Since the brakes heat up during heavy braking, to compensate for the thermal expansion of the brake drum (e.g. going downhill) There is a thermocouple -5- on the spacer bar. When heated, the thermoelement expands and thereby lengthens the spacer bar. After cooling, the normal clearance is restored between the brake pads and the brake drum. The thermocouple prevents the wear compensation gear from rotating when the brakes heat up. this may cause the brake to lock up.
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