A DAYCO 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. ACCENT I (X-3)
2. EXCEL I (X-3)
3. PONY I (X-3)
4. VERNA I (X-3)
5. ACCENT Saloon (X-3)
6. EXCEL Saloon (X-3)
7. PONY Saloon (X-3)
8. VERNA Saloon (X-3)
9. BIMANTARA CAKRA Saloon (X-3)
10. ACCENT I Saloon (X-3)
11. S COUPE (SLC)
12. LANTRA II Estate (J-2)
13. ELANTRA II Estate (J-2)
14. LANTRA II Break (J-2)
15. LANTRA Mk II Estate (J-2)
16. LANTRA II (J-2)
17. LANTRA II Saloon (J-2)
18. ELANTRA II (J-2)
19. LANTRA Mk II (J-2)
20. AVANTE II (J-2)
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.