Flywheel: Testing and Inspection

DUAL-MASS FLYWHEEL INSPECTION [L3 WITH TC]

CAUTION:
1 Do not rework the dual-mass flywheel if it is distorted.
2 Do not clean the dual-mass flywheel with any kind of fluid. Clean the dual-mass flywheel with a dry cloth only.
3 Do not clean the gap between the primary and secondary mass. Only clean the bolt connection surface and the clutch surface.

1. Remove the dual-mass flywheel.
NOTE:
1 Correct slight scratches and discoloration using sandpaper.





2 Inspect the runout of the surface that contacts the clutch disc with the dual-mass flywheel installed to the crankshaft.

2. Inspect the dual-mass flywheel.

- Cracks
- Worn ring gear teeth
- Chipped or cracked ring gear teeth
- Surface that contacts the clutch disc for scratches, nicks, and discoloration.

- If there is any malfunction, replace the dual-mass flywheel.

3. Verify that the center of the dual-mass flywheel does not move.
a. Rotate the dual-mass flywheel or attempt to move it up and down, and left and right to verify that the center of the dual-mass flywheel does not move.






- If there is any movement as indicated by the arrows in the figure, replace the dual-mass flywheel with a new one.

4. Verify that the secondary mass rotates by 15 teeth or more.






- If it rotates by 15 teeth or more, replace the dual-mass flywheel.

5. Inspect for locating dowels touching the primary mass of the dual-mass flywheel.






CAUTION:
- Make sure that the three locating dowels are installed.

- If the locating dowels are touching the primary mass of the dual-mass flywheel, replace the dual-mass flywheel with a new one.

6. Visually inspect the secondary mass.

- If there is any damage, replace the dual-mass flywheel.

7. Visually inspect the ring gear on the dual-mass flywheel.






- If there is any damage, replace the dual-mass flywheel.

8. Inspect the welded area of the dual-mass flywheel for grease leakage.






- If there is grease leakage, replace the dual-mass flywheel.

9. Inspect the dual-mass flywheel runout.






Dual-mass flywheel maximum runout [A26M-R]
- 1.5 mm {0.059 in}

- If it is more than the maximum specification, replace the dual-mass flywheel.

10. Inspect the dual-mass flywheel for the amount of guide pin projection.






- If not within the specification, replace the dual-mass flywheel.

11. Rotate the secondary mass left and right and verify that it rotates within a range of three teeth without resistance.






- If there is any malfunction, replace the dual-mass flywheel.

12. Inspect the dual-mass flywheel for cracks.

- If there are cracks, replace the dual-mass flywheel.