FLYWHEEL INSPECTION
id011000510200
Flywheel Inspection
1. Perform the following procedures to inspect the flywheel.
-
• If there is any malfunction or it exceeds the maximum specification, replace the flywheel.
- (1) Inspect the surface that contacts the clutch disc for scratches, nicks, and discoloration.
-
-
• Correct slight scratches and discoloration using sandpaper.
- (2) Inspect the ring gear teeth for damage and wear.
- (3) Measure the runout of the surface that contacts the clutch disc using a dial gauge.
-
-
Flywheel maximum runout
-
0.10 mm {0.0039 in}
Dual-mass Flywheel Inspection
-
Caution
-
• Do not rework the dual-mass flywheel if it is distorted.
• Do not clean the dual-mass flywheel with any kind of fluid. Clean the dual-mass flywheel with a dry cloth only.
• Do not clean the gap between the primary and secondary mass. Only clean the bolt connection surface and the clutch surface.
Inspection before removal
1. Inspect the rotation of the dual-mass flywheel for play.
- (1) Lock the dual-mass flywheel using the SST (49 E011 1A0).
- (2) Rotate the secondary flywheel clockwise by hand until resistance can be felt.
- (3) Mark the guide pin position on the ring gear of the flywheel.
- (4) Rotate the secondary flywheel counterclockwise by hand until resistance can be felt.
- (5) Mark the guide pin position on the ring gear of the primary flywheel again.
- (6) Verify that the play is within the range of 4 teeth.
-
-
• If the play is 5 teeth or more, replace the dual-mass flywheel.
-
Caution
-
• It may not be possible to rotate the secondary flywheel due to the functionality of the dual-mass flywheel.
In this case, the dual-mass flywheel can be considered normal by reason of the play being within the range of 4 teeth.
2. Measure the amount of guide pin projection of the dual-mass flywheel.
-
• If it exceeds the maximum amount, replace the dual-mass flywheel.
-
Dual-mass flywheel guide pin projection maximum amount
-
11.0—12.0 mm {0.434—0.472 in}
Inspection after removal
1. Visually inspect the dual-mass flywheel for crack.
-
• If there is any crack, replace the dual-mass flywheel.
2. Visually inspect the ring gear on the dual-mass flywheel for damage.
-
• If there is any damage, replace the dual-mass flywheel.
3. Visually inspect the surface that contacts the clutch disc for scratches, nicks, and discoloration.
-
• If there is any malfunction, replace the dual-mass flywheel.
-
Note
-
• Correct slight scratches and discoloration using sandpaper.
4. Visually inspect for grease leakage between the primary mass and secondary mass.
-
• If there is grease leakage, replace the dual-mass flywheel.
