| 摘要 |
A torsion damper includes a main damper and a predamper, each of which includes a pair of guide rings and a damper plate between the guide rings. The guide rings and damper plate of the main damper, together with the damper plate of the predamper, are provided with access holes in axial register with each other and defining a common axis extending in the axial direction, so as to form an access passage to enable a fastening tool to be inserted through the axial passage. The torsion damper, constituting (with other components) a clutch module, can thus be secured directly to the crankshaft of a motor vehicle. The guide rings of the predamper are disposed radially outwardly of the common axis of the access holes.
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