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See also [[techtalk:ref:genmsr06#using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using a Stethoscope or Other to Hunt Down Engine Noises]] in the REF section of the Sportsterpedia. \\ | See also [[techtalk:ref:genmsr06#using_a_stethoscope_or_other_to_hunt_down_engine_noises|Using a Stethoscope or Other to Hunt Down Engine Noises]] in the REF section of the Sportsterpedia. \\ | ||
- | Noise and Vibration are normal for a Harley. ((Recon Dad of the XLFORUM http://xlforum.net/forums/showthread.php?t=823082)) \\ | + | Noise and Vibration are normal for a Harley. ((Recon Dad of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/efi-sportster-motorcycle-talk-2007-and-up/97463-engine-noise?t=823082)) \\ |
- | In fact, they are an amalgamation of vibration, sort of a syncopated pandemonium. ((Ireeman of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072940&page=3)) \\ | + | In fact, they are an amalgamation of vibration, sort of a syncopated pandemonium. ((Ireeman of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/196416-what%C2%92s-that-sound/page3?t=2072940&page=3)) \\ |
- | Harmful noises are hard to determine without a well trained ear and these engines make a lot of noise anyway. ((milmat1 of the XLFORUM http://xlforum.net/forums/showthread.php?p=1902363&highlight=stethoscope#post1902363)) \\ | + | Harmful noises are hard to determine without a well trained ear and these engines make a lot of noise anyway. ((milmat1 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-bottom-end/72005-knocking-apparently-big-end?highlight=stethoscope#post1506806)) \\ |
Plus the sound travels through the cases to places other than where it originates. \\ | Plus the sound travels through the cases to places other than where it originates. \\ | ||
So critical listening is a must as a noise on one side of the engine may sound more like another area instead. \\ | So critical listening is a must as a noise on one side of the engine may sound more like another area instead. \\ | ||
- | There was an article in Cycle World back in '83 that said the noises a healthy Ironhead makes would be considered terminal on other makes. ((83XLX of the XLFORUM http://xlforum.net/forums/showthread.php?t=832376)) \\ | + | There was an article in Cycle World back in '83 that said the noises a healthy Ironhead makes would be considered terminal on other makes. ((83XLX of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/98047-ironhead-noise?t=832376)) \\ |
In becoming familiar with the "normal" noises, you can just keep an ear out for abnormal ones as you're speeding down the road. \\ | In becoming familiar with the "normal" noises, you can just keep an ear out for abnormal ones as you're speeding down the road. \\ | ||
- | They all sound a little different though, which is really unique. ((fergerburger of the XLFORUM http://xlforum.net/forums/showthread.php?t=832376)) \\ | + | They all sound a little different though, which is really unique. ((fergerburger of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/98047-ironhead-noise?t=832376)) \\ |
- | Of course the closer you are to the point of origin of a noise the louder it will be. ((Ferrous Head of the XLFORUM http://xlforum.net/forums/showthread.php?t=977525&page=4)) \\ | + | Of course the closer you are to the point of origin of a noise the louder it will be. ((Ferrous Head of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/107497-using-a-stethoscope-to-listen-to-the-engine/page4?t=977525&page=4)) \\ |
You sometimes get random noises too and they are generally chassis related. \\ | You sometimes get random noises too and they are generally chassis related. \\ | ||
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Larger bearings like mains "rumble" when they are worn, but also if they aren't getting enough oil for whatever reason. \\ | Larger bearings like mains "rumble" when they are worn, but also if they aren't getting enough oil for whatever reason. \\ | ||
- | | Mechanic stethoscope. ((photos by asasial of the XLFORUM http://xlforum.net/forums/showthread.php?t=977525&page=3)) | A wooden dowel for a listening tool. ((photos by Hippysmack)) | | + | | Mechanic stethoscope. ((photos by asasial of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/107497-using-a-stethoscope-to-listen-to-the-engine/page3?t=977525&page=3)) | A wooden dowel for a listening tool. ((photos by Hippysmack)) | |
|{{:techtalk:ref:tools:stethoscope_1_by_asasial.jpg?direct&300|}}|{{:techtalk:ref:tools:listening_stick_2_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:tools:stethoscope_1_by_asasial.jpg?direct&300|}}|{{:techtalk:ref:tools:listening_stick_2_by_hippysmack.jpg?direct&300|}}| | ||
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===== Critical Listening ===== | ===== Critical Listening ===== | ||
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If you find that it is an internal engine noise, don't go straight to your tool box and put your blinders on. ((HD Tech Tip dated April 1986)) \\ | If you find that it is an internal engine noise, don't go straight to your tool box and put your blinders on. ((HD Tech Tip dated April 1986)) \\ | ||
It's hard to check oil pressure, cylinder compression, timing or locate the noise if the motor is in now little pieces. \\ | It's hard to check oil pressure, cylinder compression, timing or locate the noise if the motor is in now little pieces. \\ | ||
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====== Comparing Noises From Other Bikes ====== | ====== Comparing Noises From Other Bikes ====== | ||
- | Imports are liquid cooled, and that in and of itself kills a lot of engine noise that would normally get to your ears due to: ((DG_Sportster of the XLFORUM http://xlforum.net/forums/showthread.php?t=823082)) \\ | + | Imports are liquid cooled, and that in and of itself kills a lot of engine noise that would normally get to your ears due to: ((DG_Sportster of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/efi-sportster-motorcycle-talk-2007-and-up/97463-engine-noise?t=823082)) \\ |
* Closer tolerances allowed by liquid cooling. | * Closer tolerances allowed by liquid cooling. | ||
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====== Noise From Vibration ====== | ====== Noise From Vibration ====== | ||
- | Harley-Davidson uses a common crank pin, meaning that both pistons travel up and down together at the same time. ((xllent01 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1721404)) \\ | + | Harley-Davidson uses a common crank pin, meaning that both pistons travel up and down together at the same time. ((xllent01 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/160409-rpm-related-vibrations?t=1721404)) \\ |
So all the weight is being thrown back and forth causing vibrations and the very particular “proprietary” sound or rumble. \\ | So all the weight is being thrown back and forth causing vibrations and the very particular “proprietary” sound or rumble. \\ | ||
Keeping the motor above 3000 rpm's will smooth the vibrations out dramatically. \\ | Keeping the motor above 3000 rpm's will smooth the vibrations out dramatically. \\ | ||
- | We can learn to live with it if we know what some of the symptoms are, or we can try to reduce it in many ways. ((xllent01 of the XLFORUM http://xlforum.net/forums/archive/index.php/t-3983.html)) \\ | + | We can learn to live with it if we know what some of the symptoms are, or we can try to reduce it in many ways. ((xllent01 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/2652-what-s-all-the-deal-about-vibration)) \\ |
Look for loose fasteners and hardware. \\ | Look for loose fasteners and hardware. \\ | ||
The engine and transmission mounts that are loose especially the top motor mount. | The engine and transmission mounts that are loose especially the top motor mount. | ||
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Timing can cause vibrations. \\ | Timing can cause vibrations. \\ | ||
- | A lot of the vibration depends on the rpm and gear you are riding in. These motors do not like to be lugged. ((BWP 5p of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=27)) \\ | + | A lot of the vibration depends on the rpm and gear you are riding in. These motors do not like to be lugged. ((BWP 5p of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page27?t=27701&page=27)) \\ |
Move the timing 1 degree more advanced and test ride. Then move it one degree retarded from original setting and test ride. \\ | Move the timing 1 degree more advanced and test ride. Then move it one degree retarded from original setting and test ride. \\ | ||
- | You will find you can tune out some vibrations at certain rpms moving the timing slightly. ((Shu of the XLFORUM http://xlforum.net/forums/showthread.php?t=1662083)) \\ | + | You will find you can tune out some vibrations at certain rpms moving the timing slightly. ((Shu of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/154889-speed-and-vibration?t=1662083)) \\ |
Tires can cause vibrations. \\ | Tires can cause vibrations. \\ | ||
- | Worn or under-inflated tires can develop cupping in the tread that can create a lot of vibes. ((Hexlobular of the XLFORUM http://xlforum.net/forums/showthread.php?t=1662083&page=2)) \\ | + | Worn or under-inflated tires can develop cupping in the tread that can create a lot of vibes. ((Hexlobular of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/154889-speed-and-vibration/page2?t=1662083&page=2)) \\ |
You might not notice them all the time, but they can create a buzzy ride at certain speeds. \\ | You might not notice them all the time, but they can create a buzzy ride at certain speeds. \\ | ||
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===== Front Forks ===== | ===== Front Forks ===== | ||
- | At a full stop with the bike idling, you apply the front brake and the bike gets a vibration like a buzz in frequency. ((wedge of the XLFORUM http://xlforum.net/forums/showthread.php?t=1680285&highlight=forks+vibrate)) \\ | + | At a full stop with the bike idling, you apply the front brake and the bike gets a vibration like a buzz in frequency. ((wedge of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-tires-wheels-and-brakes-aa/157028-vibration-front-brake?t=1680285&highlight=forks+vibrate)) \\ |
It disappears when you release the brake lever, and comes back as soon as you apply the brake. \\ | It disappears when you release the brake lever, and comes back as soon as you apply the brake. \\ | ||
- | As the engine rotates (picture the crank moving) the inertia tries to move the bike slightly fore and aft. ((racerwill of the XLFORUM http://xlforum.net/forums/showthread.php?t=1680285&highlight=forks+vibrate)) \\ | + | As the engine rotates (picture the crank moving) the inertia tries to move the bike slightly fore and aft. ((racerwill of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-drivetrain/sportster-motorcycle-tires-wheels-and-brakes-aa/157028-vibration-front-brake?t=1680285&highlight=forks+vibrate)) \\ |
The wheel absorbs this motion by rolling very slightly , maybe 1/16" or less. \\ | The wheel absorbs this motion by rolling very slightly , maybe 1/16" or less. \\ | ||
By applying the front brake, you stop the movement of the tire so the oscillations of inertia go to the forks and back into the bike. \\ | By applying the front brake, you stop the movement of the tire so the oscillations of inertia go to the forks and back into the bike. \\ | ||
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Vibration in the forks can appear like a dance or like the forks are about to break. \\ | Vibration in the forks can appear like a dance or like the forks are about to break. \\ | ||
This can shake the brake pad(s) or lights, mirrors and any part on the front can be subject to making noise. \\ | This can shake the brake pad(s) or lights, mirrors and any part on the front can be subject to making noise. \\ | ||
+ | |||
===== Motor Mounts ===== | ===== Motor Mounts ===== | ||
- | Engine mounts may very well be the most ignored maintenance point. ((cantolina of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=3)) \\ | + | Engine mounts may very well be the most ignored maintenance point. ((cantolina of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page3?t=27701&page=3)) \\ |
You can loosen them after working on the engine, run the bike to let the engine "settle in" to the mounts and then torque'em back down. \\ | You can loosen them after working on the engine, run the bike to let the engine "settle in" to the mounts and then torque'em back down. \\ | ||
It may help with vibration issues. \\ | It may help with vibration issues. \\ | ||
- | You can also torque the motor mount bolts and put a small line (fine permanent marker) across the bolt and the nut. ((MikeGV of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=24)) \\ | + | You can also torque the motor mount bolts and put a small line (fine permanent marker) across the bolt and the nut. ((MikeGV of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page24?t=27701&page=24)) \\ |
That way can easily spot if the bolt/nut has moved and loosened. \\ | That way can easily spot if the bolt/nut has moved and loosened. \\ | ||
==== Ironheads / Rigid mount Evos ==== | ==== Ironheads / Rigid mount Evos ==== | ||
- | + | The frame mount sporty is designed to get rigidity from the engine mounted to the frame. ((sep69 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/128772-motor-mount-question?highlight=cracked+head+motor+mount#post2973264)) \\ | |
- | The frame mount sporty is designed to get rigidity from the engine mounted to the frame. ((sep69 of the XLFORUM http://xlforum.net/forums/showthread.php?p=4069288&highlight=cracked+head+motor+mount#post4069288)) \\ | + | |
Loosing one mount therefore will weaken the overall construction (and increase vibration). | Loosing one mount therefore will weaken the overall construction (and increase vibration). | ||
- | The reason for so many engine mounts is also rotational loads the engine develops. ((tmack-1 of the XLFORUM http://xlforum.net/forums/showthread.php?p=4069288&highlight=cracked+head+motor+mount#post4069288)) \\ | + | The reason for so many engine mounts is also rotational loads the engine develops. ((tmack-1 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/frame-mount-evo-sportster-talk-1986-2003-models/128772-motor-mount-question?highlight=cracked+head+motor+mount#post2973264)) \\ |
Something like when a muscle car shakes the engine when you rev it. \\ | Something like when a muscle car shakes the engine when you rev it. \\ | ||
If you are building a bike, chances are you will make performance mod's to the engine. \\ | If you are building a bike, chances are you will make performance mod's to the engine. \\ | ||
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**Symptom**: \\ | **Symptom**: \\ | ||
- | Vibration, growing stronger with higher RPMs, can be violent. ((boneheaddoctor of the XLFORUM http://xlforum.net/forums/showthread.php?p=4610630&highlight=motor+mount+noise#post4610630)) \\ | + | Vibration, growing stronger with higher RPMs, can be violent. ((boneheaddoctor of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/158202-vibration/page2?highlight=motor+mount+noise#post3359324)) \\ |
**Condition**: \\ | **Condition**: \\ | ||
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Make certain all the mount bolts are not only there, but are properly torqued as well. \\ | Make certain all the mount bolts are not only there, but are properly torqued as well. \\ | ||
One bolt can make that much of a difference. \\ | One bolt can make that much of a difference. \\ | ||
+ | |||
==== Rubber mount Evos ==== | ==== Rubber mount Evos ==== | ||
There shouldn't be that much vibration on rubbermount bikes. \\ | There shouldn't be that much vibration on rubbermount bikes. \\ | ||
- | You should feel some but not enough to make your feet numb. ((gronk62 of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=6)) \\ | + | You should feel some but not enough to make your feet numb. ((gronk62 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page6?t=27701&page=6)) \\ |
- | Keeping the motor mounts in specs makes all the difference in the world. ((Bill2 of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=12)) \\ | + | Keeping the motor mounts in specs makes all the difference in the world. ((Bill2 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page12?t=27701&page=12)) \\ |
**Tip**: If your mirrors are blurry, check your motor mounts. \\ | **Tip**: If your mirrors are blurry, check your motor mounts. \\ | ||
- | The front motor mounts are notorious for loosening up. ((Toejam503 of the XLFORUM http://xlforum.net/forums/showthread.php?p=5713261&highlight=loose+motor+mount#post5713261)) \\ | + | The front motor mounts are notorious for loosening up. ((Toejam503 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-general-discussion-and-problems/195355-vibration-during-acceleration?highlight=loose+motor+mount#post4251983)) \\ |
Also check the condition of all the motor mount rubber isolators, they can deteriorate from age. \\ | Also check the condition of all the motor mount rubber isolators, they can deteriorate from age. \\ | ||
- | If you over tighten the front mount, you're compressing the mount making it stiffer. ((A_Ride_4_ever of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=28)) \\ | + | If you over tighten the front mount, you're compressing the mount making it stiffer. ((A_Ride_4_ever of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page28?t=27701&page=28)) \\ |
This leads to less give and a much higher chance of cracking the front mount. \\ | This leads to less give and a much higher chance of cracking the front mount. \\ | ||
- | Check the large thru bolt (1" hex head) in the front rubber motor mount. ((ron1200c of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701)) \\ | + | Check the large thru bolt (1" hex head) in the front rubber motor mount. ((ron1200c of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt?t=27701)) \\ |
- | It's in the front of your bike below the voltage regulator under the oil filter. ((xena of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=4)) \\ | + | It's in the front of your bike below the voltage regulator under the oil filter. ((xena of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page4?t=27701&page=4)) \\ |
There's your rubber mount with the big bolt going through it. \\ | There's your rubber mount with the big bolt going through it. \\ | ||
If there is no thread showing where the nut is on the bolt, check tightness. \\ | If there is no thread showing where the nut is on the bolt, check tightness. \\ | ||
- | Threads are normally past the end of the nut ranging from 1-2 threads to 1-1/2" or so. ((garbiker of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=5)) ((dave of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=8)) \\ | + | Threads are normally past the end of the nut ranging from 1-2 threads to 1-1/2" or so. ((garbiker of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page5?t=27701&page=5)) ((dave of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page8?t=27701&page=8)) \\ |
So if it's flush or so you may need to retighten it or at least check it. \\ | So if it's flush or so you may need to retighten it or at least check it. \\ | ||
- | As long as it's up to torque (and Loctite was applied), you're good. ((dave of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=8)) \\ | + | As long as it's up to torque (and Loctite was applied), you're good. ((dave of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page8?t=27701&page=8)) \\ |
You can remove the right foot peg and rear brake pedal to gain access to the nut. \\ | You can remove the right foot peg and rear brake pedal to gain access to the nut. \\ | ||
- | You may only need to take the bolts out of the front peg mount and rotate it out of the way to get a torque wrench on that nut. ((clayvis of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=4)) \\ | + | You may only need to take the bolts out of the front peg mount and rotate it out of the way to get a torque wrench on that nut. ((clayvis of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page4?t=27701&page=4)) \\ |
You can used an open end wrench on the bolt head also. \\ | You can used an open end wrench on the bolt head also. \\ | ||
- | Also, when looking at the front lower motor mounts from under the bike, the rubber mounts seem to sag downward just a bit. ((GlockDoc of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=28)) \\ | + | Also, when looking at the front lower motor mounts from under the bike, the rubber mounts seem to sag downward just a bit. ((GlockDoc of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page28?t=27701&page=28)) \\ |
This should be somewhat normal as the engine puts downward pressure on the mount when setting. \\ | This should be somewhat normal as the engine puts downward pressure on the mount when setting. \\ | ||
- | Both front and rear mounts can sag like this. ((JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=29)) \\ | + | Both front and rear mounts can sag like this. ((JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page29?t=27701&page=29)) \\ |
The rears you can't tell from the outside but when you remove the swingarm, you can see the pivot pin is not centered. \\ | The rears you can't tell from the outside but when you remove the swingarm, you can see the pivot pin is not centered. \\ | ||
You can swap the rear rubbers left to right and the pin will be centered again. \\ | You can swap the rear rubbers left to right and the pin will be centered again. \\ | ||
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However, this won't work with front mounts because they are LH and RH parts. \\ | However, this won't work with front mounts because they are LH and RH parts. \\ | ||
- | | Front lower motor mount bolt. ((photo by salukidawg of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=21)) | 1 year old (2011) 1200C front mount sag. ((photo by GlockDoc of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=28)) | | + | | Front lower motor mount bolt. ((photo by salukidawg of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page21?t=27701&page=21)) | 1 year old (2011) 1200C front mount sag. ((photo by GlockDoc of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page28?t=27701&page=28)) | |
|{{:techtalk:ref:genmsr:04_motor_mount_bolt_by_salukidawg.jpg?direct&200|}}|{{:techtalk:ref:genmsr:2011_1200c_front_motor_mount_by_glockdoc.jpg?direct&300|}}| | |{{:techtalk:ref:genmsr:04_motor_mount_bolt_by_salukidawg.jpg?direct&200|}}|{{:techtalk:ref:genmsr:2011_1200c_front_motor_mount_by_glockdoc.jpg?direct&300|}}| | ||
- | Check the top isolator link mount bolts (the ones that bolt to top of the front head). ((gronk62 of the XLFORUM http://xlforum.net/forums/showthread.php?t=27701&page=4)) \\ | + | Check the top isolator link mount bolts (the ones that bolt to top of the front head). ((gronk62 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/rubber-mount-sportster-motorcycle-talk-2004-2006/16552-vibration-problem-solved-check-your-front-engine-mount-bolt/page4?t=27701&page=4)) \\ |
If they come loose, add some blue Loctite to the threads and re-torque them. \\ | If they come loose, add some blue Loctite to the threads and re-torque them. \\ | ||
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* **Symptom: Rattling Noise**. \\ Conv90 submitted video of noise from the primary side: \\ | * **Symptom: Rattling Noise**. \\ Conv90 submitted video of noise from the primary side: \\ | ||
- | {{ :video:buell_noise_video_by_conv90.mp4 |}} | + | {{:video:buell_noise_video_by_conv90.mp4|}} |
* **Symptom: Rattling Noise**. \\ The tensioner shoe can be loose and rock side to side enough to sound like a lifter problem. It will rock fore and aft into the primary cover. \\ From the cam side of the bike, it'll sound like it's a lifter bouncing around. It's a slow intermittent hollow banging noise. It may only make noise at idle when the chain is least tight. \\ | * **Symptom: Rattling Noise**. \\ The tensioner shoe can be loose and rock side to side enough to sound like a lifter problem. It will rock fore and aft into the primary cover. \\ From the cam side of the bike, it'll sound like it's a lifter bouncing around. It's a slow intermittent hollow banging noise. It may only make noise at idle when the chain is least tight. \\ | ||
* **Condition: Loose Primary Chain Adjuster Shoe**. \\ Below is a short video by Conv90 of the XLFORUM showing the hollow noise created. | * **Condition: Loose Primary Chain Adjuster Shoe**. \\ Below is a short video by Conv90 of the XLFORUM showing the hollow noise created. | ||
- | {{ :video:primary_chain_adjuster_shoe_noise_by_conv90.mp4 |}} | + | {{:video:primary_chain_adjuster_shoe_noise_by_conv90.mp4|}} |
+ | |||
+ | \\ | ||
* **Symptom: An extra and constant noise inside of the primary case**. \\ An extra and constant noise inside of the primary case (even / after adjustment of the primary chain adjuster). ((Spor-T-1 of the XLFORUM http://xlforum.net/forums/showthread.php?t=29865)) \\ **Condition: Loose compensator nut / flywheel sprocket shaft nut**. \\ Once the sprocket on that shaft gets loose enough, it will chew the end of your fly wheel. ((dodgenbullets of the XLFORUM http://xlforum.net/forums/showthread.php?t=29865)) If this is the case your motor must come out and the cases split to fix it. \\ | * **Symptom: An extra and constant noise inside of the primary case**. \\ An extra and constant noise inside of the primary case (even / after adjustment of the primary chain adjuster). ((Spor-T-1 of the XLFORUM http://xlforum.net/forums/showthread.php?t=29865)) \\ **Condition: Loose compensator nut / flywheel sprocket shaft nut**. \\ Once the sprocket on that shaft gets loose enough, it will chew the end of your fly wheel. ((dodgenbullets of the XLFORUM http://xlforum.net/forums/showthread.php?t=29865)) If this is the case your motor must come out and the cases split to fix it. \\ |