Slight Transmission Whine

Discussion in 'Touring Models' started by aspybay, Mar 15, 2014.

  1. aspybay

    aspybay Member

    21
    0
    0
    Have an 09 FLHTCU (38K) and have noticed over the past several months a slight whine in the transmission but only when stopped and in neutral. Once first gear is engaged it disappears. I have been using H-D Synthetic Oil since birth but a bud has suggested switching to Aimsoil.. Anyone out there with similar symptoms?? Comments??? Thanx in advance...Aspybay
     
  2. BUBBIE

    BUBBIE Well-Known Member

    4,959
    83
    113
    I'd strongly suggest REDLINE ShockProof Heavy (mayonnaise - catsup color) OR light weight ShockProof (blue-green in color) IF in a very COLD Climate...

    Noise will usually be gone... SMILE

    signed....BUBBIE

    Added: MANY here use the Redline ShockProof GEAR OIL and are VERY HAPPY With It...
     
  3. wazzle

    wazzle Member

    98
    0
    0
    I put Redline Shock Proof in my old 06 Road Glide and the trans was noticeably quieter and shifted smoother. It looks like Pep to Bismol.
     
  4. yeiter

    yeiter Member

    8
    0
    0
    I took my 08 Roadking in for a warranty repair (leaky gasket) and when I got it back it made a whining noise in neutral. The noise goes away when I put it in gear. I rode it a while thinking the noise would go away but it never did.

    I eventually took it to my independent mechanic, whom I trust way more than the MOCO guys, and he said it was nothing to worry about. I now have over 113,000 mi. on the bike and have not had any problem with the tranny or anything else (except 3 compensater sliders and shaft extenders).

    I did use Amsoil at the time my noise started, but have since started using HD tranny fluid. I have always used Amsoil in the engine though.

    I have a buddy with the same noise on a 2010 and he put heavier gear oil in the tranny and quieted it down. I am used to the noise now and will stick with the stock tranny fluid.
     
  5. DFHarley19

    DFHarley19 Active Member

    390
    0
    0
    I second to BUBBIE!!! Don't wait! Go and get REDLINE! Once you get them and you will tell others to get REDLINE! BUBBIE told me and now I am telling you! :bigsmiley12:
     
  6. Bodeen

    Bodeen Well-Known Member Staff Member Moderator Contributor

    4,310
    73
    130
    Primary chain to tight?
     
  7. BUBBIE

    BUBBIE Well-Known Member

    4,959
    83
    113
    GOOD Point Bodeen...

    I would take off the Derby cover and use a Long screwdriver and Use it to Press UP on the chain in the middle of the top center between engine and clutch (spring-loaded) and it should have about 3/4 inch movement UNDER Pressure.
    IF Not, It may have ratcheted up one notch too much and yes IF too tight it may make the Whine...

    Totally have to take off the outer primary cover to RE-adjust the ratchet assembly to a looser setting... It will self-adjust when together and running...

    There have been some bikes that have tightened too much when you twist the throttle enough and drop the clutch out.....:newsmile055:

    signed....BUBBIE
     
  8. btsom

    btsom Active Member

    341
    38
    6
    Just a comment, the primary chain continues to run anytime the engine is running. If the noise goes away when the tranny is in gear while the primary chain is still going, I don't understand why the chain might be the culprit. Something stops spinning when the clutch is disengaged and the tranny dropped in gear and that would be the transmission input shaft.
     
  9. BUBBIE

    BUBBIE Well-Known Member

    4,959
    83
    113
    GOOD Point btsom....... Now no need to remove the outer primary Now OR the derby cover...

    It Probably IS from the Tranny.....:bigsmiley20: OR Is It?

    signed....BUBBIE
     
  10. stray dog

    stray dog Junior Member

    443
    26
    0
    Listen to your BUBBIE & get that motor oil out of the tranny :D