Collapsed DMF causes grief
When this 2006 Peugeot 407 arrived outside the workshop we knew that it was going to need more than just the clutch replacing. The owner was complaining that the clutch was very heavy and was now slipping at every gearchange. What he had disregarded was that the knocking sound was coming from the engine while it was ticking over. This indicated that the dual mass flywheel was also going to need replacing.
The gearbox on the Peugeot 407 is not easily accessed and requires the dropping of the subframe to allow enough room to complete the job. This job was particularly messy because the worn DMF had covered the interior of the bellhousing with tiny black dust particles which then rained down on the mechanic removing the gearbox. The DMF did not have much radial movement, but had dropped internally and was certainly in need of replacement.
It was nice to get this one finished and it was then time for clean overalls before moving on to the next job!
The difference between the old and new dual mass flywheels is quite pronounced.