Question about Harley Davidson FXDX Dyna Super Glide Sport Motorcycles

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Whinning noise in the primary chain case. I alreadt replace the tensioner shoe

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With the engine running, put the transmission into gear and sit there with the clutch lever pulled in. Do you still hear the noise. If so, most likely the noise is in the primary itself rather than the transmission. Since you didn't specify whether the bike is a Sportster or a BIg Twin, it's difficult to say what the noise may be. It could be a bearing going bad. The problem with that is that you can disassemble the bike and never find the bearing. It could be the big bearing in the outer clutch shell or it could the mainshaft support bearing in the inner primary if it's a big twin. A Sportster has basically the same bearings but in different areas. If the bike is equipped with one of those automatic primary chain tensioners, I've seen them make a noise as well. Then again, a noise like that is very difficult to find. It seems to travel all through the engine. It could possibly be an inner cam bearing going bad. They sound exactly like the alternator whine on a Chevrolet. If you have one of those mechanic's stethoscopes or long screwdriver, listen to various places on your engine to try to locate the noise more closely.

Good Luck

Posted on Apr 03, 2011

Testimonial: "Thanks for the advice..I'm hoping it is just the outer clutch bearing"

  • wilbert perez Jun 12, 2011

    man' thats what happens with my 01 sport too! were been cruising aound long beach frwy and it sounds really bad...really bad and getting louder and it dangerous for me driving it too fast with that bearing problem? thanks people!!!

  • wd4ity
    wd4ity Jun 12, 2011

    If your bike is making any kind of unusual noise, I would not ride it. Doing so could cause more damage and depending on what it is, it could be dangerous. If its a transmission noise and the transmission locks up at high speed, the rear wheel will lock up as well. Pulling the clutch in will not help since the clutch is ahead of the transmission. This could cause you to lose control of the bike and go down. Not good. I'd find out what the noise is rather than continue to ride the bike. The hide you save may be your own.

    Good Luck


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Is a loud whinning sound comming from primary case normal when hot?

Hi, Jim "ABSOLUTELY NOT" whining noises are usually bearing ***** songs, in your case however, it may be your primary chain is on the tight side and has worn out the primary chain adjusting shoe also check your primary oil level, sorry you can not find the first and best tool you ever bought for your Harley despair not, for a mere $10 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below, and for specific information or questions feel free to contact me at Good luck and have a nice day.
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How do I tighten the primary chain tentioner on my Harley Davidson Dyna wideglide

inside the primary cover, in the middle bottom part of the chain is a shoe assembly, loosen adjusting bolt to raise shoe which increases tension on chain, now if the chain will not adjust then possibly the chain & tensioner are worn & need replacement.

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Both the short time before needing to readjust, and the fact that you're out of adjustment, indicates the chain is worn out.

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Midrange picth when clucth is pulled in and let out in ll 5 gears (sounds like a open primary would)

Hi Anonymous, if you recently installed an automatic chain tensioner they sometimes will make this noise untill the chain seats in the adjusting shoe. Good luck

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1 Answer

Primary chain hitting case on clutch housing, cable nearly fully adjusted clutch slips if adjust any more. bad grinding noise from chain hitting case can i adjust clutch any more in housing?

The primary chain adjustment has nothing to do with the clutch. Take the small upper inspection cover off the primary cover and use your finger to check the primary chain tension. It should have 3/8 to 1/2 inch up and down movement in the top run of the chain when the engine is cold. To adjust, loosen the lock nut on the primary chain adjuster on the bottom of the primary case. Turn the screw upward to tighten the chain, downward to loosen. Once set, tighten the locknut.

To adjust the clutch, loosen the clutch cable adjuster as much as you can. Remove the derby cover from the primary cover. Remove the spring and the locknut. Turn the adjuster screw counterclockwise as far as it will go. Turn it back in 1/4 turn and replace the lock nut and the spring. Replace derby cover. Adjust the clutch cable so that you have about a 1/8 inch play at the hand lever.

Good Luck

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1 Answer

Engine chain type noise at low rpm engine has approx 40 thousand kilos on a 2008 electric glide classic

Have you checked the tension on the primary chain lately? Take the oval shaped inspection cover off the the primary cover on the right side of the bike. Check the tension on the top run of the primary chain in the middle of the run. You should have between 5/8" (15.8mm) to 7/8" (19.0mm) with the engine COLD. To adjust loosen the nut that holds the primary chain shoe in place and raise the plate to tighten the chain, lower it to loosen. Since working through the inspection cover hole is tedious, some people elect to take the outer primary cover off and then set the tension. Refill the primay with 36 to 42 ounces of the appropiate oil. Harly uses H-D Syn3 20W50 synthetic engine oil in the primary.

If the noise seems to be coming from the right hand side of the engine, it could be the cam chain tensioner and shoe. To repair this requires going into the cam chest. This is something that I do not recommend for the amateur mechanic. There are also some special tools required to work in this area.

I hope this helps
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1 Answer

I have a clinking noise coming from my primary case on decel .my bike is a 2007 harley ultra classic.there is evedence of the side links being impacted by the compensator. looks like someone hit the chain...

If you did not have the noise before the service, guess what caused it, yep the service. So something was not done properly.
It almost sounds as if the primary chain has too much slack and is hitting the inside if the primary case when in de-cel mode.
I am thinking that the primary chain tensioner has been improperly re-installed or damaged.

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could be a few things.... check you primary chain tension, if thats not it check cam chain shoes and tension.and finally if that isnt it check your stator bolt.Mine came loose and it made noise untill it came out then it sounded like major problem at all rpm's.I was relieved to find out it was just the stator bolt.thought the bottom end let loose....Anyhow i hope one of these is the cure. You didnt say if it was comming from top or bottom... good luck!

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That is correct. If your engine is whinning at about 2000 rpm's and its a high pitch whine, you need upper timing chains and chain tensioners. aka plastic gizmo as you called it. The timing chains ride off the plastic portion of the tensioner causing the noise, basically the chain is riding on steal stub from within the tensioner, that's where the noise is coming from. Waranree on this is 5years or 60000 miles which ever comes first. And the new tensioners are updated parts.

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