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. GALANT V Saloon (E5_A, E7_A, E8_A)
2. GALANT Mk V Saloon (E5_A, E7_A, E8_A)
3. ETERNA V Saloon (E5_A, E7_A, E8_A)
4. GALANT V (E5_A, E7_A, E8_A)
5. GALANT V (E5_A, E7_A, E8_A, HJ)
6. GALANT Mk V (E5_A, E7_A, E8_A)
7. GALANT VI (EA_)
8. GALANT VI Saloon (EA_)
9. GALANT / ASPIRE Mk VI (EA_)
10. ASPIRE VI (EA_)
11. GALANT VI Estate (EA_)
12. GALANT Mk VI Estate (EA_)
13. LEGNUM VI Estate (EA_)
14. See more in applications

The operation of the timing belt tensioner

The JAPKO 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.