Operating principle of the parking brake (Freelander 2)

When the parking brake lever is activated, the toothed sector rotates and pulls the threaded rod and the cable equalizer. The equalizer pulls the two parking brake cables and activates two expanders simultaneously. The movement of the expander causes the upper and lower brake shoes to rotate relative to the manual adjuster support. The brake shoes come into contact with the brake drum, overcoming the force of two return springs.

When the sector of the parking brake lever is turned, the teeth on the pawl engage with the corresponding teeth on the sector. In the engaged position, the pawl teeth are held in engagement with the sector teeth by the action of the spring to prevent the lever from being released.

When the parking brake is applied and the ignition is in power mode 6 (ignition), the microswitch connects the ground to the instrument cluster and switches on the parking brake indicator lamp. For more information, refer to the chapter: Instrument cluster (413-01 Instrument cluster, Description and operating principle).

When the button on the parking brake lever is pressed and the lever is moved to release the parking brake, the pawl teeth disengage from the sector teeth. When the parking brake lever is lowered, the parking brake cable closes the expander and the brake shoes are immediately retracted from the brake drum by two return springs.

When the parking brake lever reaches the fully released position, the microswitch opens to disconnect the electrical circuit to the instrument cluster. When the parking brake is released, the parking brake indicator lamp is extinguished.

(The article was copied from this resource: lrman.ru)