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Author Topic: Primary rattling noise?  (Read 12106 times)

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bigmuff

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Primary rattling noise?
« on: September 05, 2009, 06:58:33 PM »
If I put the bike in neutral and let the clutch out there's a rattling noise from the primary.  Pull the clutch in and it goes away.  I'm guessing this is just the compensator but want to see if other's bikes are doing it.
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RedDevil

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Re: Primary rattling noise?
« Reply #1 on: September 05, 2009, 08:50:55 PM »
Haven't heard it on mine.   :nixweiss:

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LarryB

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Re: Primary rattling noise?
« Reply #2 on: September 06, 2009, 09:06:08 AM »
change fluid, try Amsoil SuperShift tranny fluids in the primary
« Last Edit: September 06, 2009, 09:11:05 AM by LarryB »
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AXIL

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Re: Primary rattling noise?
« Reply #3 on: September 06, 2009, 10:25:31 AM »
  bigmuff, what year is your bike? sounds like the primary main shaft bearing.
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Rooster

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Re: Primary rattling noise?
« Reply #4 on: September 06, 2009, 12:45:00 PM »
Quote from: AXIL on September 06, 2009, 10:25:31 AM
  bigmuff, what year is your bike? sounds like the primary main shaft bearing.
Mine is in for that and more first tapping then sort of howling to go with it. Jim says use Baker high torque bearing, stronger and doesn't walk. Just read an article in Oct American Iron that suggested the same bearing to go back in.
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bigmuff

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Re: Primary rattling noise?
« Reply #5 on: September 06, 2009, 06:45:42 PM »
It's a 2010 CVO Street Glide.

Anways, it didn't do it today.  It did it yesterday when I got back from a long ride.  I took a long ride today and when I got back it didn't do it.  Weird.

In general this bike is quieter than my 2005 Road King.  It still clicks, clacks and clunks but not quite as loud.

Harley really needs a completely new drivetrain design.  I have a couple Hondas too and the drivetrains in those are far superior from a noise and drive-ability standpoint.  Of course they don't sound like a Harley though.  Harley management places a lot of emphasis on that, to the point that the engine design suffers.  I believe a double-pin crank and/or counterbalancing along with liquid cooling would mitigate a lot of the issues in the new engines, albeit at the expense of the exhaust tone.
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AXIL

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Re: Primary rattling noise?
« Reply #6 on: September 06, 2009, 09:14:24 PM »
 I am sorry you feel that way about harley. may be you should go back to jap junk  and have a chittet day.
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Pete

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Re: Primary rattling noise?
« Reply #7 on: September 07, 2009, 06:20:41 PM »
Tranny quiets down after a grand or so, when I first got mine I thought the shifts were stiff as well.  FYI final drives on BMW's are so bad these days that folks competing in the Iron Butt Rally this year are carrying a spare with them along the way! Also, for the heck of it check and see if the fuel door release button is vibrating (sounds like a chain rattling).   
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Screamin_Beagle

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Re: Primary rattling noise?
« Reply #8 on: September 07, 2009, 06:48:46 PM »
Check the primary chain....
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bigmuff

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Re: Primary rattling noise?
« Reply #9 on: September 08, 2009, 03:42:24 PM »
After a few more rides I've determined that it's temperature-dependent.  When the bike is cool it doesn't do it.  The hotter the engine the louder the rattle.  It almost sounds like the primary chain is too loose which I think would make sense.  Bike gets hotter, chain gets looser.
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LarryB

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Re: Primary rattling noise?
« Reply #10 on: September 08, 2009, 03:43:37 PM »
bigmuff, what bike do you have, year?
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bigmuff

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Re: Primary rattling noise?
« Reply #11 on: September 08, 2009, 03:44:27 PM »
2010 CVO Street Glide.
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mjb765

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Re: Primary rattling noise?
« Reply #12 on: September 08, 2009, 03:46:16 PM »
Try Redline Primary oil and see if that helps...and while you are there--Redline Shockproof will quiet things down in the trans and it will shift better. It worked wonders in my '10 SESG. Just my $.02
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Hoist!

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Re: Primary rattling noise?
« Reply #13 on: September 08, 2009, 03:53:39 PM »
These bikes since the '06 Dyna have auto chain tensioners. What most don't know is that there is still an adjustment to them. And the auto-tensioner will not function correctly unless it's first installed/setup with the correct tension to begin with. The chain will stretch as it gets hotter. So I'd check the chain/chain tensioner for the correct setup before looking further. ;)

Hoist! :coolblue:
« Last Edit: September 08, 2009, 04:02:40 PM by Hoist! »
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bigmuff

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Re: Primary rattling noise?
« Reply #14 on: September 08, 2009, 04:00:00 PM »
Quote from: Hoist! on September 08, 2009, 03:53:39 PM
The chain will stretch as it gets hotter. So I'd check the chain/chain tensioner for the correct setup before looking further. ;)

Hoist! :coolblue:

That's what it sounds like to me.  The temperature-dependent nature points to excess chain slack.  I would think a bearing would be worse when cold.  But again, it's a Harley and logic doesn't usually apply.
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