Question about 2000 Harley Davidson FXDWG Dyna Wide Glide

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Stil rattling, any thoughts (see first post)

Still rattling (see my first post) You can definitely tell that it is coming from the primary. Chain has been adjusted. Any other thoughts as to what could be loose or what the problem/s are?

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Well, there are a few more things in the primary that can cause a rattle but I would not think you'd be having these problems on a bike as new as yours.

While you had the primary cover off, did you check the nut on the sprocket shaft and the nut that holds the clutch assembley on? The Sprocket shaft nut torques to 150-165 foot pounds of torque and the mainshaft nut that holds the clutch assembly on torques to 70-80 foot pounds LEFT HANDED. You'll need a primary locking tool, something to keep the engine and primary parts from turning while you torque the components. The Mainshaft nut that holds the clutch on is behind the adjuster plate with the snap ring holding it in the middle of the clutch assembly.

Check the alternator rotor and see if it "wiggles". Take a long bolt about 1/4" or 5/16" diameter and wedge it in one of the holes in the rotor. Try to wiggle the rotor. If it wiggles, for some reason your sprocket shaft extension is not up against it correctly. If you do pull your compensator and clutch assembly off, pull the rotor off and check the magnets as well.

Now, there is only one other thing that I know of in that area the will cause a noise. If you can't find anything else, pop the sprocket shaft seal out and take a look at the outer Timken bearing. I have seen one in my time that was bad. If for some reason this bearing is bad, it could be causing a problem but it's highly unlikely.

Now, try a few other things as well. Does the noise change when you hold in the lever disengaging the clutch? Is your primary adjuster the stock unit or has it been replaced with one of those "automatic" jobs? With the engine running, take a long screwdriver and attempt to locate the source of the noise by using the screwdriver like a doctor's stethascope.

It's sure difficult to troubleshoot a bike when you can't hear it. For years I told people that I couldn't fix a bike over the phone and now look what I'm doing. LOL Anyway, Good Luck and let me know if you find anything. I'll keep scratching my head or where ever to see if I can think of something else.

Steve

Posted on Jul 13, 2010

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Compensator sprocket.

Posted on Jul 13, 2010

Testimonial: "It was the compensator sprocket, thanks!"

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From your lack of info, I'm gonna throw out "primary chain adjustment".

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When is the last time you checked the tension on your primary drive chain? Remove the round plug at the top of the primary cover. You can reach the primary chain through this hole. Use your finger to gauge the up and down movement of the chain. If you need to adjust the chain, on the bottom of the primary is an adjusting bolt with a lock nut. Loosen the lock nut and turn the adjuster upwards to tighten the chain, lower it to loosen the chain. The chain should have 3/8" to 1/2" of movement with the engine cold. Usually the final drive belt won't make a rattling noise since it's a rubber-like compound. It should have a tension of about 1/2" up and down movement with a force of ten pounds applied to it from the underside of the lower run.

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Steve, when is the last time you adjusted your primary chain? If the chain gets too loose, you'll hear a rattle like that when you let off on the gas. If you pull in the clutch, you must let off on the gas to keep the engine from over revving. This is about the only thing I know of that could be causing the problem.

But, just to be sure, I'd drain the primary case and remove the outer primary cover. Disconnect the battery, remove anything that might be in the way. You'll have to remove the oval shaped inspection cover as well. Remove all the bolts and take the outer primary off. Then, you can adjust the chain easily. Adjust it so you have between 5/8" and 7/8" up and down play in the middle of the top run of the chain. Look on the inside of the primary underneath the top in the front at the bolt hole. You can see if the chain has been hitting there by the marks on the underside of the inner primary.

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It sounds to me like the primary chain may be rattling. When you start the bike, the engine is cold and the chain is at it's loosest. As you ride, it tightens up as the engine cases heat up and expand. But, when you let off on the throttle, the slack in the chain goes to the top run. This causes the chain to "lift" off the small engine sprocket. If it is loose enough, it will hit the top of the inner primary housing on the inside. Check the tension of the primary chain. It should be 3/4" to 7/8" when the engine is cold.

I'm sorry that this is about the best I can do since I'm not in a position to hear the noise for myself. It's a "best guess" check this situation. I ride a 1994 FXDWG and I love it. Just turned over 30K, no major repairs.

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