Remove ribbed belt.
Turn out bolts and remove a pulley-damper. When removing the pulley-damper is not required to turn on the central pulley bolt.
When installing a pulley-damper, make sure that the mark
(Fig. 3.2.25) are aligned with the marks on the pulley of the toothed belt and tighten bolts of a pulley-damper torque 22 Nm.