Vibration In 6th Gear
Thread Starter
|
Elite HDF Member
Joined: Jun 2009
Posts: 3,785
Likes: 63
From: Eastern Washington State
Vibration In 6th Gear
09 Low Rider, 20,000 miles. Bad vibration in 6th gear at interstate speeds 75+. Down shift to 5th and it smooths out and vibration goes away. Indie shop owner rode it and agrees that vibration is not normal and definitely feels mechanical and not tires or front end.
Initial thought is the front motor mount which appears to have quite a bit of movement at idle or when revving the engine. Ordered a new mount which should be here next week. Any other thoughts or ideas on a possible cause? BTW..... front motor mounts are expensive @ $100.00.
Initial thought is the front motor mount which appears to have quite a bit of movement at idle or when revving the engine. Ordered a new mount which should be here next week. Any other thoughts or ideas on a possible cause? BTW..... front motor mounts are expensive @ $100.00.
Thread Starter
|
Elite HDF Member
Joined: Jun 2009
Posts: 3,785
Likes: 63
From: Eastern Washington State
Everything was good after a PC-V and a dyno tune. Not exactly sure when the vibrations started but it's fairly recent so the suspect is something mechanical. Bike runs smooth and strong other than the vibrations in 6th.
Thread Starter
|
Elite HDF Member
Joined: Jun 2009
Posts: 3,785
Likes: 63
From: Eastern Washington State
Advanced
Joined: Aug 2009
Posts: 80
Likes: 0
From: Missouri
i would bet its that front isolator. feel lucky you got 20k before you noticed it
Cruiser
Joined: Oct 2008
Posts: 190
Likes: 2
From: Magnolia, DE
HD Service put out an MS sheet out the subject of the front motor mount. It looks like they are finally acknowledging a problem that has been around since 1993, when they first started using this design. The MS sheet is dated 16 May 2012. Sorry I do not have the sheet number, someone on this forum had mentioned and posted it. With a search you may be able to find it.
Rick
Rick
Trending Topics
Cruiser
Joined: Oct 2008
Posts: 190
Likes: 2
From: Magnolia, DE
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
