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Clutch V6 Shaking Most In Reverse When Hot

Discussion in 'Early CJ5 and CJ6 Tech' started by juffer, Oct 25, 2018.

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  1. Hellion

    Hellion Regurgitated

    Maybe after a time driving, the engine heat is transferring to your mounts and softening them? :shrug:

    The solution might just be your engine/motor mounts. This is new knowledge for me, but they are a wear item and have to be replaced regularly on lesser automobiles, sometimes within 20,000 miles or a few years, depending on how hard you drive...and especially on manual transmission vehicles.
     
  2. 70cj5134f

    70cj5134f Member

    Sounds like hot spots on the flywheel, did u have it resurfaced?
     
    juffer likes this.
  3. juffer

    juffer Juffer

    Think that is the issue. I did not resurface it.
     
  4. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    I have never resurfaced a flywheel. Seems like other things might be more likely, IMHO.
     
    dozerjim likes this.
  5. Daryl

    Daryl Sponsor

    Maybe take the word of someone who has had dozens of these Jeeps and attach a stay cable. Just might be an idea worth trying.
     
    dozerjim, Walt Couch and Bowbender like this.
  6. Focker

    Focker That's a terrible idea...What time? Staff Member

    Edited my post.
     
  7. juffer

    juffer Juffer

    But where can I get a stay cable since it was not original on a v6. Ans Why did I have this jeep for 10 years without shaking. So A few questions first shpould be answered before junping to conclusions. That is why I like this forum. Al tips and answers are welcome
     
  8. ITLKSEZ

    ITLKSEZ Hope for the best, prepare for the worst

    My money is on either a non-flat flywheel or oil contamination. If you seperate the clutch, I'll bet you'll either find discoloration, micro-cracks or small sludge smears on the surface of your flywheel and/or pressure plate. I'd be willing to bet the seal on the input shaft of your transmission leaked a little bit (maybe you parked on a steep downhill?). This will drip right on your clutch disc, and centrifugal force will sling it out to the mating surfaces. If the inside of the front bearing retainer is wet when you pull the trans, you may have found your culprit. Make sure you replace the seal, and don't overfill the trans.

    If it was fine before and now it's not, something obviously changed.
     
  9. juffer

    juffer Juffer

    I think ( hope ) so. . I will try to pull it out this week and keep you posted .
     
  10. 70cj5134f

    70cj5134f Member

    Look for blueish, hot spots on flywheel?
    And I hate to admit this, but I've taken them out
    with a DA sander and some 40_60 gt paper!
    Much better to visit a mach shop Though!
     
    Hellion likes this.
  11. Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Juffer the stay cable is factory original on V6. My 66 Tux came with one.
     
    juffer, Beach66Bum and Daryl like this.
  12. juffer

    juffer Juffer

    OK,, but where can I get one. Can not find it at the stores in the USA. Maybe some advice ont that. Thanks
     
  13. iharding

    iharding Quitter

    Mine did it when backing up hill. The zero dollar fix was to shift into low range when backing up. Gets the clutch out right away, no chatter.
     
    juffer likes this.
  14. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    Make something. A lot easier to try than pulling the transmission and so on.
     
  15. Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    [​IMG]
    Should be able to make one pretty easy. The cross-member should have 2 small ears sticking up on top of cross-member that the ball end of cable sets in. Other end (threaded) bolts to bracket mounted to bell-housing to engine bolt.
     
    juffer and Focker like this.
  16. juffer

    juffer Juffer

    OK, I will try. I found one
     
    Last edited: Oct 30, 2018
  17. juffer

    juffer Juffer

    And maybe a simple question. Do I fill the transmission till the fillerbold or do I fill the T 14 A with 2.5 US PTS
     
  18. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    I fill em till they run out the hole you fill through.
     
    juffer likes this.
  19. juffer

    juffer Juffer

    Did your new motormounts solved the problem?
     
  20. Diverdc

    Diverdc New Member

    On my 17th birthday I purchased a brand new 1968 CJ5 with V6 off a dealers lot in British Columbia. After owning it for about 2 months, the engine started to shake violently anytime you tried to back up. The engine shook from side to side so hard that you could not keep your foot on the clutch pedal. Since it was under warranty I took it back to the Jeep dealer for repair. My assumption was that I had broken an engine mount. The dealer indicated there was nothing wrong with the engine mounts and this problem was not uncommon on CJ5's with the V6. The factory solution provided by Kaiser was for the dealer to instal an anti vibration kit. The kit consisted of two brackets and a hydraulic dampener, like you would use on your steering arm. One bracket mounted on the top of the engine and the other bracket mounted on the inner fender on the drivers side. The damper prevented the engine from rocking easily side to side. I was less than impressed with the fix, as it looked a bit strange, but I never had another problem with the engine shaking when in reverse.

    DiverDC
     
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