Primary Chain Noise?
#1
11-04-2018, 07:58 PM
Primary Chain Noise?
I ride a 2014 FLHTP (police bike). If I'm riding slow in a low gear and if I momentarily let off the gas then get back on the gas abruptly then I hear a "clack" noise from the engine. I suspect this is the primary chain momentarily slackening then tightening.
Do other riders hear this noise under similar operating conditions?
Is this a normal characteristic of my 103 CU twin-cam engine?
Is there an automatic primary chain tensioner in the chain case or do I have to make an adjustment?
Do other riders hear this noise under similar operating conditions?
Is this a normal characteristic of my 103 CU twin-cam engine?
Is there an automatic primary chain tensioner in the chain case or do I have to make an adjustment?
#2
11-04-2018, 08:54 PM
Road Warrior
#3
11-05-2018, 09:38 AM
#6
11-07-2018, 01:00 PM
#7
11-13-2018, 09:44 PM
Tourer
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#8
12-03-2018, 12:07 PM
Tourer
I think this is the same thing happening on my 12 RGU. It only seems to "clack" after it gets warm. If I give a quick twist of the throttle I hear 1 "clack" coming from the left side of the engine. It happens if Im riding, usually at lower RPMs but will do it if Im in N as well. Now that its getting cold ouside I have time to pop of the timing cover and check things out. My bike only has 14k miles on it so I hope thats all it is.
#9
12-04-2018, 08:02 PM
https://www.hdforums.com/forum/new-rushmore-models/1259939-primary-chain-noise.
All chains stretch under load. The auto tensioner is to bump up to adjust as req’d.
If you accelerate aggressively on a fairly regular basis the adjuster will do its job, may even over tighten.
I mostly tour, riding long distances at a steady pace, so mine tends to get a bit “sloppy”.
If you tend to ride in a similar manner, your primary chain may tend to stretch, not giving the tensioner a chance to adjust.
When you notice it’s sloppy
Try the following after the bike has cooled off overnight,
place the transmission in 1st gear
rock the bike forward and back against the engaged transmission several times
test ride it, repeat as required.
If you accelerate aggressively on a fairly regular basis the adjuster will do its job, may even over tighten.
I mostly tour, riding long distances at a steady pace, so mine tends to get a bit “sloppy”.
If you tend to ride in a similar manner, your primary chain may tend to stretch, not giving the tensioner a chance to adjust.
When you notice it’s sloppy
Try the following after the bike has cooled off overnight,
place the transmission in 1st gear
rock the bike forward and back against the engaged transmission several times
test ride it, repeat as required.
Last edited by rod5557; 12-04-2018 at 08:03 PM.
#10
12-06-2018, 09:52 PM
Seasoned HDF Member