User Guide

. Clutch driven plate
Description
• Clutchdiscburnt
Cause
• Thermaloverloadoftheclutchdrivenplate
occurring, e.g. when the wear limits were exceeded
Effect
• ThermalloadappliedontheDMF
Remedy
• Performavisualinspectionforsignsofthermal
discolouration on the DMF
For damage assessment refer to:
• Low/mean/highthermalload (page 24)
• Veryhighthermalload(page25)
. Between primary and secondary mass
Description
• BurntresiduesofabradedclutchfacingattheDMF’s
outer edge or in the ventilation holes
Cause
• Thermaloverloadoftheclutchdrivenplate
Effect
• Residuesoftheabradedfrictionmaterialcanpenetrate
into the arc spring channel and cause malfunction
Remedy
• ReplaceDMF
. Alignment of primary and secondary mass
Description
• Boltsconcealedbysecondarymass
• DMFblocked
Cause
• Frictioncouplinginflangedefective
• Arcspringsorflangedefective
Effect
• Nopowertransmission
• Noises
• Nodamping
Remedy
• ReplaceDMF
. Visual inspection/damage patterns
5 DMF failure diagnoses