Timing mechanism parts: 1 - crankshaft; 2 - toothed pulley of the crankshaft; 3 - toothed camshaft drive belt; 4 - intermediate shaft toothed pulley; 5 - intermediate shaft; 6 - camshaft toothed pulley; 7 - Timing belt tension roller; 8 - camshaft; 9 - pusher; 10 - valve springs; 11 - spring support plates; 12 - valves; 13 - adjusting washer; 14 - timing mechanism drive covers; 15 - oil seal; 16 - sealing gaskets
(The original text of the material can be found on the website «AudiManual»)