- Make sure that there is no resistance to rotation of the impeller when the engine is cold, if necessary, replace the clutch.
- When the engine is hot, in contrast, must feel the resistance of the impeller rotation, otherwise the clutch must also be replaced.
| - Make sure there is no excessive bearing play, if necessary replace the coupling.
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- Inspect clutch for signs of leaks, make sure there is no deformation of a bimetallic spring.
- If necessary, remove the collar for a more detailed study it.
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