A OPTIMAL 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. PAJERO I (L04_G, L14_G)
2. PAJERO I (L04_G, L14_G, NA, NB, NC, ND, NE, NF, NG)
3. MONTERO � (L04_G, L14_G)
4. PAJERO/SHOGUN � (L04_G, L14_G)
5. PAJERO/SHOGUN I (L04_G, L14_G)
6. PAJERO II (V3_W, V2_W, V4_W)
7. PAJERO II (V3_W, V2_W, V4_W, NH, NJ, NK, NL)
8. MONTERO � (V3_W, V2_W, V4_W)
9. PAJERO/SHOGUN Mk II (V3_W, V2_W, V4_W)
10. PAJERO SFX /SHOGUN II (V3_W, V2_W, V4_W)
11. PAJERO/SHOGUN II (V3_W, V2_W, V4_W)
12. MONTERO II (V3_W, V2_W, V4_W)
13. SHOGUN II (V3_W, V2_W, V4_W)
14. PAJERO II Canvas Top (V2_W, V4_W)
15. MONTERO � Canvas Top (V2_W, V4_W)
16. PAJERO/SHOGUN � Canvas Top (V2_W, V4_W)
17. PAJERO/SHOGUN II Canvas Top (V2_W, V4_W)
18. SHOGUN II Canvas Top (V2_W, V4_W)
19. MONTERO II Canvas Top (V2_W, V4_W)
20. SIGMA (F2_A, F1_A)
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.