Timing Chain: Description and Operation

Chaingear:



Image Legend:
1 - Chain tensioner
2 - Tensioning rail
3 - Sliding rail
4 - Drive wheel, crankshaft (24 teeth)
5 - Drive wheel, intermediate shaft (36 teeth)
6 - Output wheel, intermediate shaft (21 teeth)
7 - Drive wheel, exhaust camshaft (28 teeth)
8 - Output wheel, exhaust camshaft (21 teeth)
9 - Drive wheel, intake camshaft (21 teeth)
10 - Duplex, roller chain
11 - Duplex, roller chain
12 - Simplex, roller chain
13 - Flat-base tappet
14 - Intake valve
15 - Exhaust valve