By that time many parts are missing or have been broken., ., It is not just installing a gear, but you have to also know how to calibrate the gear so it doesn't make noise and hits and damage other gears. People have send them to me from all over the world. Tiny springs and rings can fly away and get lost. Switches can get stuck., Buttons can break. Diese Montageanleitungen zum Herunterladen beschreiben Schritt für Schritt die Montage eines CenterGear Ersatzteils für den Direktantrieb älterer Sony Walkman Modelle, die ein häufiges Problem mit dem originalen Kunststoffzahnrad haben A new gear installation will cost”, Merk: Sony, Model: WM-DD, Kenmerken: Cassetteband Walkman DD30 DD33 Reparatur Sony WM-DC2 WM-DD WM-DDII WM-DDIII WM-DD100 WM-2 Small Reel Gear Sony WM-DD Reparatur Hinweise des Verkäufers: “I can repair all type of DD Walkmans which have a main center gear. Speed can be too fast or too slow on some models., Azimuth can be off. Small gears can crack. Capacitors can go bad., I can go on and on! Disc rubbers need to be changed.