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. OUTLANDER I (CU_W)
2. OUTLANDER I (CU_W, ZE, ZF)
3. AIRTREK I (CU_W)
4. OUTLANDER I SUV (CU_W)
5. GRANDIS (NA_W)
6. GRANDIS (NA_W, BA)
7. SPACE WAGON (NA_W)
8. GALANT VI (EA_)
9. GALANT VI Saloon (EA_)
10. GALANT / ASPIRE Mk VI (EA_)
11. ASPIRE VI (EA_)
12. GALANT Saloon (DJ_, ED_, EF_)
13. GRUNDER Saloon (DJ_, ED_, EF_)
14. ECLIPSE IV (DK_A)
15. SAVRIN
16. See more in applications

The operation of the timing belt tensioner

The OPTIMAL 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.