A HUTCHINSON 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. 9-5 (YS3E)
2. 9-5 Saloon (YS3E)
3. 9-5 Estate (YS3E)
4. SIGNUM Hatchback (Z03)
5. SIGNUM (Z03)
6. VECTRA C GTS (Z02)
7. VECTRA C (Z02)
8. VECTRA C Estate (Z02)
9. VECTRA Mk II (C) Estate (Z02)
10. VECTRA Mk II (C) (Z02)
11. VECTRA Mk II (C) GTS (Z02)
12. ESPACE IV (JK0/1_)
13. ESPACE Mk IV (JK0/1_)
14. 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.