Remove the dual clutch transmission.
(Refer to Dual Clutch Transmisson(DCT) - "Dual Clutch Transmisson Assembly")
Remove the external damper (A).
Tightening torque :
71.5 ~ 75.5N.m (7.3 ~ 7.7kgf.m, 52.8 ~ 55.6 lb-ft)
Install in the reverse order of removal.