Patent ID: 7581299

Claim:
A method of assembling a damper unit which is interposed between an output member of an engine and a power transmission shaft, the damper unit comprises a torque limiter including a pair of plates, a friction member, and an urging device that presses at least one of the pair of plates so that the friction member is sandwiched by the pair of plates, the method comprising: forming an assembly by coupling, with a set load, the torque limiter to a torsion damper; and coupling the assembly to the output member of the engine, wherein: the pair of plates are coupled to each other such that the pair of plates do not rotate relative to each other but are able to move relative to each other in an axial direction, the urging device presses the at least one of the pair of plates in the axial direction, the torque limiter is structured to release an excessive torsion force through slippage between shafts under a predetermined set load constantly applied, and the urging device presses the pair of plates in a fixed state such that the urging device cannot move in the axial direction to release.