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. LAUREL (JC32)
2. PATROL III/2 Station Wagon (W260)
3. SAFARI III/2 Station Wagon (W260)
4. PATROL GR IV (Y60, GR)
5. PATROL IV (Y60, GR, GQ)
6. PATROL GR � (Y60, GR)
7. SAFARI IV (Y60, GR)
8. PATROL GR IV (Y60, GR, 260L)
9. PATROL GR V Wagon (Y61)
10. PATROL IV Station Wagon (Y61, GR_, GU)
11. PATROL GR Mk II Wagon (Y61)
12. SAFARI V Wagon (Y61)
13. PATROL III/2 Hardtop (K260)
14. PATROL / SAFARI III/2 Hardtop (K260)
15. 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.