Topics > Project motorcycles > Roy Smith's Moto Guzzi 850 T3 engine rebuild > 2013 March 19: Install the alternator and rotorCreated: 2013 March 19Updated: 2013 March 19First entry|Previous entry|Next entry|Last entryTime to fit the rotor for the alternator. The commutator needs to be cleaned up.Photo courtesy of Gregory Bender.The sealing surface looks good.Photo courtesy of Gregory Bender.I used a 3M pad to clean up the commutator.Photo courtesy of Gregory Bender.I used a 3M pad to lightly clean up the sealing surface.Photo courtesy of Gregory Bender.Another view of the cleaned commutator.Photo courtesy of Gregory Bender.Another view of the cleaned sealing surface.Photo courtesy of Gregory Bender.The inside of the rotor is tapered to fit the taper on the front of the crankshaft.Photo courtesy of Gregory Bender.I apply anti-seize to the tapper inside the rotor.Photo courtesy of Gregory Bender.Then secure in place with the special bolt, using anti-seize on its threads, too. The rotor can sometimes be very difficult to remove; hence my use of plenty of anti-seize in this location.Photo courtesy of Gregory Bender.Here is the rotor fit in place.Photo courtesy of Gregory Bender.And now the stator is in place.Photo courtesy of Gregory Bender.Antiseize to the three bolts that secure the stator, too.Photo courtesy of Gregory Bender.Bummer, this thread pulled staight out when I just barely tightened bolts. This is not the original timing chest cover. Instead, Roy purchased a replacement that had been media blasted. It looked really good, except for these threads. That is the nature of old and used parts. I ended up installing TimeSerts in both top holes to correct this problem.Photo courtesy of Gregory Bender.First entry|Previous entry|Next entry|Last entryAdditional entries for this project2013 March 19: Inspect and prepare the crankcase2013 March 19: Ensure the bottom of the crankcase and sump are flat2013 March 19: Prepare the crankshaft2013 March 19: Prepare the rear main bearing2013 March 19: Install the breather pipes in the bellhousing2013 March 19: Install the camshaft2013 March 19: Install the oil pump2013 March 19: Install the front main bearing2013 March 19: Install the crankshaft2013 March 19: Install the rear main bearing2013 March 19: Install the timing sprockets, chain, and tensioner2013 March 19: Fit the timing chest cover2013 March 19: Revisit the rear main bearing2013 March 19: Fit the connecting rods2013 March 19: Fit the oil sump and sump extension2013 March 19: Install the flywheel and clutch2013 March 19: Install the alternator and rotor2013 March 19: Install the oil pressure sending unit2013 March 19: Install the tappets2013 March 19: Install the right piston and cylinder2013 March 19: Install the left piston and cylinder2013 March 19: Install the left cylinder head2013 March 19: Install the right cylinder head2013 March 19: Install the distributor2013 March 19: Repair timing chest cover