A SASIC brand Tensioner Pulley, timing belt is a part of the timing belt drive, which serves to bypass the belt in a certain place or several places and is a freely rotating pulley of small diameter.

The composition of the roller is small: it is the roller mount, the internal rolling bearing with a protective oil seal, and the working body of the roller itself, which is in contact with the belt.

1. 407 (6D_)
2. 407 Saloon (6D_)
3. XSARA PICASSO (N68)
4. 206 Hatchback (2A/C)
5. 406 (8B)
6. 406 Saloon (8B)
7. 406 Break (8E/F)
8. 406 Estate (8E/F)
9. 406 Coupe (8C)
10. 206 CC (2D)
11. 607 (9D, 9U)
12. 607 Saloon (9D, 9U)
13. ZETA (22_)
14. EVASION MPV (22, U6)
15. SYNERGIE MPV (22, U6)
16. JUMPY (U6U_)
17. DISPATCH (U6U_)
18. EXPERT (224_)
19. XSARA (N1)
20. XSARA Break (N2)
21. See more in applications

The principles of the timing belt tensioner work

Excessive tension leads to intensive wear of the timing parts - pulley bearings (water pump, generator, tensioner, etc.), the belt itself, and others. In addition, a tight belt stretches faster and shortens its service life. Too little preload is fraught with more serious problems - slipping of the belt along the toothed pulleys of the camshafts, which leads to a violation of the valve timing and deterioration of the entire engine.

Therefore, a tensioning device is introduced into the timing drive in the form of rollers of one design or another, which, during engine operation, maintain an optimal belt tension.