Visual Inspection:
Before the two-mass-flywheel is cleaned a visual inspection has to be done.
The two-mass-flywheel must not have any traces of thermal damage at the rear side or at the outside
coverage. Otherwise the two-mass-flywheel has to be replaced.
Friction control cam (E4A-73-212-402):
Residual of molten plastic between primary and secondary mass of the two-mass-flywheel. This is a
sign for thermal impact at the inside of the two-mass-flywheel. In this case the two-mass-flywheel has
to be replaced.
This check has to be repeated after the mechanical inspection. Due to the rotation during the
mechanical inspection the covered part of the friction control cam is positioned at the wholes of the
back side of the primary mass.
Fig. 85 - 38 Friction Control Cam /Rear side of the primary mass)
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