A HERTH+BUSS JAKOPARTS 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. COLT III (C5_A)
2. COLT III (C5_A, RD, RE)
3. COLT Mk III (C5_A)
4. LANCER IV Hatchback (C6_A, C7_A)
5. LANCER IV Hatchback (C6_A, C7_A, CA, CB)
6. LANCER Mk IV Hatchback (C6_A, C7_A)
7. LANTRA I (J-1)
8. LANTRA I Saloon (J-1)
9. ELANTRA I (J-1)
10. LANTRA � (J-1)
11. BIMANTARA NENGGALA I (J-1)
12. SONATA II (Y-2)
13. SONATA � (Y-2)
14. SONATA III (Y-3)
15. SONATA III Saloon (Y-3)
16. SONATA Mk II (Y-3)
17. SONICA III (Y-3)
18. ECLIPSE I (D2_A)
19. ECLIPSE � (D2_A)
20. SANTAMO
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.