... spring clutch, diameter 420mm, mechanically operating with air assistance.TransmissionTransmission model:9JS119; synchromesh,9 forward ... :Service brake: dual circuit compressed air brakeParking brake(emergency brake): spring energy, compressed air operating on rear wheelsAuxiliary brake ... recorder, sun visor, and adjustable steering wheel, air horn and shock absorber. ElectricsOperating voltage: 24V, ...