The timing belt tensioner is a load-bearing pulley located on an adjustable axle. Its main function is belt tension; additional functions are to damp drive vibrations and increase the angle of the camshaft pulley wrap.

1. COLT II (C1_A)
2. COLT II (C1_A, RB, RC)
3. COLT Mk II (C1_A)
4. COLT III (C5_A)
5. COLT III (C5_A, RD, RE)
6. COLT Mk III (C5_A)
7. LANCER III (C1_A, C6_A)
8. COLT III Saloon (C1_A, C6_A, RD, RE)
9. LANCER Mk III (C1_A, C6_A)
10. LANCER III Station Wagon (C1_V, C3_V)
11. LANCER III Break (C1_V, C3_V)
12. LANCER Mk III Station Wagon (C1_V, C3_V)
13. LANCER IV (C6_A, C7_A)
14. LANCER IV (C6_A, C7_A, CA, CB)
15. LANCER Mk IV (C6_A, C7_A)
16. LANCER IV Hatchback (C6_A, C7_A)
17. LANCER IV Hatchback (C6_A, C7_A, CA, CB)
18. LANCER Mk IV Hatchback (C6_A, C7_A)
19. GALANT III (E1_A)
20. GALANT III Saloon (E1_A)
21. See more in applications

The operation of the timing belt tensioner

The JAPANPARTS brand Tensioner, timing belt is a bearing with a pulley on the outer cage. Depending on the design, the tensioning mechanism can be made in the form of an eccentric pressed into the inner bearing race, or placed on a separate bracket. The bearing cage is packed with grease and covered with a lip. You can order an automatic tensioner, it is a little more complicated, but the roller itself has no fundamental differences.

Timing belt tension is designed for a specific force and must be consistent. Selecting a timing belt tensioner pulley that is too loose can cause the belt to slip through the timing belt teeth. This is unacceptable, since it will lead to a shift in the phases of the valve operation relative to the movement of the pistons.