The timing belt tensioner is a load-bearing pulley located on an adjustable axle. Its main function is belt tension; additional functions are to damp drive vibrations and increase the angle of the camshaft pulley wrap.

1. LANCER CELESTE Coupe (A7_)
2. GALANT I (A12_)
3. GALANT I Saloon (A12_)
4. GALANT � (A12_)
5. GALANT I Station Wagon (A12_V)
6. GALANT I Break (A12_V)
7. GALANT � Station Wagon (A12_V)
8. SAPPORO I (A12_)
9. SAPPORO � (A12_)
10. SAPPORO II (A16_A)
11. SAPPORO Mk II (A16_A)
12. See more in applications

The operation of the timing belt tensioner

The JAPANPARTS brand Tensioner, timing belt is a bearing with a pulley on the outer cage. Depending on the design, the tensioning mechanism can be made in the form of an eccentric pressed into the inner bearing race, or placed on a separate bracket. The bearing cage is packed with grease and covered with a lip. You can order an automatic tensioner, it is a little more complicated, but the roller itself has no fundamental differences.

Timing belt tension is designed for a specific force and must be consistent. Selecting a timing belt tensioner pulley that is too loose can cause the belt to slip through the timing belt teeth. This is unacceptable, since it will lead to a shift in the phases of the valve operation relative to the movement of the pistons.