Since the MOCO came out with their new design in crankshafts(press fit cranks) instead of keyed or pinned, there have been some bikes with excessive crank run out with very low miles on them. Some of the symptoms in the more sever cases are vibrations in the engine far worse than normal.
This causes problems because of the run out on the shaft damaging oil pumps and more.
The MOCO has replaced complete engines in some cases to eliminate this problem under warranty.
Here's a few videos that will give you an idea of what this is about brought to my attention by dynarider of this forum.
YouTube - 2007 Harley Davidson 96 Twin-Cam Pinion Shaft Runout
YouTube - 2007 Harley Davidson 96 Twin-Cam Pinion Shaft Runout Part 2.
Crankshaft Runout Inspection - Harley Davidson Community
The above link will show the specs in a document about the run out and the Tech Tip that covers it also.
This causes problems because of the run out on the shaft damaging oil pumps and more.
The MOCO has replaced complete engines in some cases to eliminate this problem under warranty.
Here's a few videos that will give you an idea of what this is about brought to my attention by dynarider of this forum.
YouTube - 2007 Harley Davidson 96 Twin-Cam Pinion Shaft Runout
YouTube - 2007 Harley Davidson 96 Twin-Cam Pinion Shaft Runout Part 2.
Crankshaft Runout Inspection - Harley Davidson Community
The above link will show the specs in a document about the run out and the Tech Tip that covers it also.