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. HIACE III Bus (_H5_, _H6_, _H7_, _H8_, _H9_)
2. LAND CRUISER (_J7_)
3. CAREVACA (_J7_)
4. LAND CRUISER PRADO (_J7_)
5. CRESSIDA Station Wagon (_X6_)
6. HIACE III Van (_H5_, _H6_, _H7_, _H8_, _H9_)
7. HILUX V Pickup (_N_, KZN1_, VZN1_)
8. PICKUP V Pickup (_N_, KZN1_, VZN1_)
9. TACOMA V Pickup (_N_, KZN1_, VZN1_)
10. HILUX MIGHTY X V Pickup (_N_, KZN1_, VZN1_)
11. HIACE II Van (_H11, _H2_, _H3_, _H4_)
12. CROWN (_S1_)
13. DYNA Platform/Chassis (_U_, _Y_)
14. DYNA Bus (_U3_, _U2_)
15. HILUX IV Pickup (_N5_, _N6_)
16. 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.