Version: 16.12.2014 - Porsche 2015 911 GT3 Cup Technical Manual

Engine
911 GT3 Cup (991)
32
Installation
Carefully remove any small edges or burrs on the beveled edge of the crankshaft
flange using an oil stone, then thoroughly clean the crankpin and the crankshaft bore
(use cleaning solvent or acetone with a clean, lint-free cloth).
Under no circumstances should the crankshaft flange sealing surface be treated with
emery cloth or brushes with metal bristles. Remove corrosion on the crankshaft
flange only using a special metal-polishing pad. Then clean the crankshaft flange
thoroughly with acetone or cleaning solvent.
1. Uniformly attach (hand-tight) the fitting tool base plate Porsche ET-No.:
000.721.971.90 to the crankshaft flange using the socket head screws
1.6.5.5
NOTE
MY 2015
Only dry mount the crankshaft seal. Never touch the
micro lip seal.
During mounting, the steel ring should point towards
the viewer

Version: 16.12.2014