Fig. 2.25. Timing chain: 1 – camshaft sprocket; 2 – tensioner lever; 3 – chain tensioner; 4 – chain guide; 5 – crankshaft sprocket; 6 -timing mechanism drive chain; 7 – step size; 8 – step; 9 – connection
Engine oil inside the front engine cover lubricates the timing chain and sprockets. The timing chain pins are nitrided for increased abrasion resistance (Fig. 2.25).
[The article is based on website data MazBook]