Engine Crankshaft Pistons

911 Carrera 4

4. Check pulley for runout, straightening with a copper hammer if necessary.

Max. permissible lateral runout: 0.5 mm.


The hammer must only knock in the inside shell, since otherwise the rubber cord of the vibration damper would be destroyed.

5. Recheck tightness (235 Nm = 170 ft. lbs.) after straightening.

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