Engine Vibration
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Joined: Mar 2012
Posts: 11,232
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From: Socialist Republic of the USA
My Road King needed the front motor mount replaced at about that mileage but wasn't as violent as you describe. You can try tightening it down to determine if that is the problem.
Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
Likes: 7,164
From: Oxford, Nc
2007 motors were the first with the crankshaft run-out issues. Hopefully not yours, but if you don't find the cause of the vibration, you may want to investigate your cranks deviation.
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Seasoned HDF Member
Joined: Nov 2010
Posts: 17,548
Likes: 7,164
From: Oxford, Nc
The cam cover comes off the right side, and the cam sprockets/plate are removed from the pinion shaft, ( that's the 'end' of the crankshaft )
A gauge is attached /clamped to the cases and the needle is placed against the side of the pinion. The engine is rolled over and the gauge will measure the "wobble."
.000 to.003" in spec for '99 to '06 models.
.000 to.012" new spec for 07 and later.
The 'new' 07 cast crank with no Timken lefty bearing support ( removed in 03 models,) combined to cause a problem with crank 'slippage' so Harley increased "acceptable" run out to .012", (because they couldn't fix it.)
.012" will rattle your dental fillings.
Google cam install video or crankshaft run out and you'll get some pics.
Good Luck!
A gauge is attached /clamped to the cases and the needle is placed against the side of the pinion. The engine is rolled over and the gauge will measure the "wobble."
.000 to.003" in spec for '99 to '06 models.
.000 to.012" new spec for 07 and later.
The 'new' 07 cast crank with no Timken lefty bearing support ( removed in 03 models,) combined to cause a problem with crank 'slippage' so Harley increased "acceptable" run out to .012", (because they couldn't fix it.)
.012" will rattle your dental fillings.
Google cam install video or crankshaft run out and you'll get some pics.
Good Luck!