Webco spring brake actuator assembling 24/24

This is the webco spring brake actuator which having two function one side service brake working and another side is parking ( hand brake) working, this actuator using in heavy commercial vehical rear wheel, in this actuator having outer body, 2 nos coil sprung, spring retainer, middle aluminum body which one sealing area also having manually parking brake adjusting bolt and push rod all the part working with air and coil spring tension.