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. LS (_F1_)
2. LS Saloon (_F1_)
3. LS (_F2_)
4. LS Saloon (_F2_)
5. LX (UZJ100)
6. LAND CRUISER 100 (_J1_)
7. LAND CRUISER (_J1_)
8. LAND CRUISER AMAZON (_J1_)
9. LAND CRUISER CYGNUS (_J1_)
10. PRADO (_J1_)
11. LAND CRUISER 100 (_J1_, _J10_)
12. MACHO (_J1_)
13. SC Convertible (UZZ40_)
14. SOARER Convertible (UZZ40_)
15. GX (_J12_)
16. GS (_S16_)
17. GS Saloon (_S16_)
18. LS (_F3_)
19. LS Saloon (_F3_)
20. GS (_S19_)
21. See more in applications

The operation of the timing belt tensioner

The BLUE PRINT 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.