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Transmission Whine

Discussion in 'Early CJ-5 and CJ-6 Tech' started by 62CheepJeep, Jun 8, 2019.

  1. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    can som help me to understand what is causing this horrible whine while in 3rd gear. As a either press the clutch or let off the accelerator it stops. Is it a bearing or gear or something else entirely.


     
  2. Jun 8, 2019
    65seejayfive

    65seejayfive Blazin’ new trails

    York, PA
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    I’m not sure what could be the culprit and I don’t want to ask a question that I probably already know the answer to but you are full of oil right? Both tranny and tcase?
     
  3. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Yep. All brand new oil.
     
  4. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    I will try to top it off and see if that helps.
     
  5. Jun 8, 2019
    Jeepenstein

    Jeepenstein Me like Jeep.. Sponsor

    Middle TN
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    That happened to me once right after I rebuilt the T-14, then I got home and found the 3rd gear syncro ring sitting on my bench.. Sonofa..
     
  6. Jun 8, 2019
    PeteL

    PeteL Member Sponsor 2019 Sponsor

    Hills of NH
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    Sounds maybe like a bearing starting to go, complaining when under load.
     
  7. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Strange that it is only in 3rd gear. I filled the oil to halfway up the gears. No change. I really don’t want to have to learn how to rebuild a transmission. Unfortunately there is only one transmission place within 50 miles of me that works on manual transmissions. I called and it is $800 to start.
     
  8. Jun 8, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

    Denver, CO
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    Could it just be classic D18 gear whine?
     
  9. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Is there a cure? It’s very annoying and worrisome
     
  10. Jun 8, 2019
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

    Virginia Beach, VA
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    have you had the clutch out lately
     
  11. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Just when I put this transmission/transfer case in why?
     
  12. Jun 8, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

    Denver, CO
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    edit - I was able to listen to your video. Sounds like you have two things going on: standard D18 gear whine, and then a second noise that is more of a clatter or clacking (?) sound which would be more concerning.

    My initial comment was just to let you know that some amount of whine is pretty standard with the D18. It does get worse over time as the intermediate shaft and roller bearings wear. Knowledgeable members on here can probably walk you through a way identify where the whine is coming from, how to differentiate what I hear as two different sounds, and what to do about it (starting with checking gear oil levels). Although I don't want you to ignore a serious problem, I will also say that I was quite shocked at how loud the D18 whine really was when I first got my ecj5 (although there was no clacking sound). I was accustomed to either modern chain driven cases, or in my previous CJs, they were all later model cases that were direct drive to the rear wheels as opposed to through drive in the D18. I rebuild both my T14 and my D18 and the amount of whine decreased only slightly, but I had some other concerns that needed to be addressed as well. Get some suggestions for how to test or identify the issue from members here, and then try to be very procedural in how you can rule out different possibilities until you know what the issue is. Good luck...
     
    colojeepguy likes this.
  13. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Thanks. Very great advice.
     
  14. Jun 8, 2019
    Twin2

    Twin2 wasn't me Sponsor 2019 Sponsor

    Virginia Beach, VA
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    just thinking out loud . clutch disc backwards
     
  15. Jun 8, 2019
    ITLKSEZ

    ITLKSEZ Volvophilic

    Post Falls, ID
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    Try it in low range and see if there is any difference in tone. If yes, it's the t-case. (That's what it sounds like to me.)

    The transmission will most likely make more noise in first or second and be quiet in third, since third gear is just shooting the power straight-through.

    Sounds like you have an exhaust leak too.
     
  16. Jun 8, 2019
    Glenn

    Glenn Kinda grumpy old man Staff Member Sponsor

    Apopka, Fl
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    We need a longer video with all you going through all 3 gears. That is definitely not a standard gear whine. It sounds horrible. Have you had the cover off of the transmission and inspected it with no oil in it?
     
    jpflat2a likes this.
  17. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Definitely has an exhaust leak or twelve. Lol
     
    ITLKSEZ likes this.
  18. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    I will try to get a longer video tomorrow. Just got home from daddy/daughter date. Pizza with my favorite girl in the world. (Crust-less for me). I have had the cover off today and noticed there was rust on the bearings where the cane shifter rides.
     
    Glenn and Focker like this.
  19. Jun 8, 2019
    62CheepJeep

    62CheepJeep Member

    Spartanburg SC
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    Quite possible when I swapped the motor. Original was the normal 8.5” clutch. The replacement motor had 9.25” heavy duty clutch. I did take the clutch off the flywheel during the swap because I didn’t realize they were different at first. My bad for being impatient.
     
  20. Jun 8, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member Sponsor

    Denver, CO
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    was wondering if that was the clacking noise I was hearing - my first thought was exhaust leak as well.
     
    ITLKSEZ likes this.

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