Clutch for Triaxle dump

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Don379, Apr 15, 2021.

  1. Don379

    Don379 Medium Load Member

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    Against fellow owner operators advice that i work with, and there is plenty of them, I put a dam eaton 2050 easy pedal clutch in. I was told that its not good for this application. Clutches in triaxle dumps get worked hard. especially during millings operation. So heres the dilemma. The clutch now makes the truck jump alot when engaging and now just before total engagement, it makes a "woo woo woo" sound". BEing the mechanically inclined person iam, Im thinking the intermediate plate is trash. Probably heat warped and glazed over which is causing the hopping and annoying sound as it does final grap. No, it is not throw out bearing. And no it does not need grease. I think last seasons milling operation is what started the destruction. We had to do some NASTY milling up hill and this operation didnt allow for normal procedure where you just let the clutch out and roll with the mill or where you an pull forward and wait for machine to catch up. Clutch had to be slipped with heavy loads. My od clutch i pulled out was trashed nd never developed issuses like this. I wish i knew th part number. It was defiantly an eaton clutch. While i had my trck apart, i put a brand new cat flywheel on as well. So @Goodysnap or anyone else that knows, What is the deal with easy pedal clutch? only good for highway trucks? What are my other options for a severe duty clutch that can take the abuse my truck goes through? Im gonn yank my trans when have time one of these weekends and ut the appropriate clutch in there. thanks fr you guys time reading the long post
     
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  3. Goodysnap

    Goodysnap Road Train Member

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    Clutch part number?

    What trans?

    I have heard and felt what you are experiencing. The easy pedal almost allows the operator to keep the clutch in the sweet spot or the engagment spot or slip it longer. The chatter your feeling is pretty typical and most likely wont change much during the life.

    If its holding good, run it out and go back to a traditional. You pretty much hit it on easy pedal for road truck. Non for vocational, IMO.
     
    spsauerland Thanks this.
  4. Don379

    Don379 Medium Load Member

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    o
    Ok yeah. It also makes that noise like big tire skid sound while its finishing engagement. sounds like friction and glaze. Just annoying. I probably wont go out o my way to swap it outto the traditional till the fall when things slow down or unless the clutch comes apart.
    Eaton Clutch part number is : 308925-25
    Transmission is RTLO 18918
     
  5. Goodysnap

    Goodysnap Road Train Member

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    Downshift and just let it out faster.......

    I completely understand the annoyance.
     
  6. Don379

    Don379 Medium Load Member

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    Goodysnap. thanks for checking in and some great insite on it. Ill run her till my gut says to yank her out
     
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  7. BoxCarKidd

    BoxCarKidd Road Train Member

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    Is your truck engine electronic or mechanical fuel system?
     
  8. Don379

    Don379 Medium Load Member

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    cat c12 elec 445 horse. turboed and tuned over 500
     
  9. BoxCarKidd

    BoxCarKidd Road Train Member

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    OK so yours is electronic which eliminates mechanical linkage and air ride cab problems.
    Be sure all your engine, transmission, mounts and torque spring type things are good.
    I will share some experience from hard knocks and what I do. Everyone can hammer me as I opened the door. Maybe someone else can help teach me to drive?
    I used to put the heaviest clutch in everything that fit. Someone on this forum pointed out that if you had really good service from your last clutch replace as original. My left knee would have appreciated that.
    Like the easy pedals but do they not have different torque ratings available?
    Now you can start laughing and or learning. I was driving a Mack in about 1988. R model, 5 speed, camel backs, mechanical fuel system ( rod between the pedal and the pump ) , Air bags on the back of the cab.
    It did fine with a trailer even when empty. I dropped a trailer and was bob tail. Stopped at a traffic light and had that thing hopping when the light changed. Bunny hopping extremely bad. The more I tried to correct it the worse it got. Cab up and down, mechanical fuel rod and air seat can really get things going. Then the CB said: Ha ABC-XYZ ( name on the door ) got you ears on? I just turned it off. I learned that if I gave it just a little throttle and eased off the clutch slowly I could prevent this. When it starts to move maybe even slightly depress the clutch and then ease back off of it. It is a very touchy situation with some trucks.
    I was taught to have the clutch in or out. To the bottom only when stopped. With some trucks and applications that is not a problem. This truck I have now is touchy kind of like that Mack. If I need to get out in traffic in a hurry slipping the clutch a little bit is mandatory. Very minimal on slipping and RPM.
    Now that you are done laughing I wounder about the noise. Could your clutch center be a bit large for your flywheel opening or some similar thing.
     
    spsauerland Thanks this.
  10. jamespmack

    jamespmack Road Train Member

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    Used to put the 2250 eazy pedal Eatons behind Cats, N14 that were hot rodded in Wreckers. That little tri axle dumper with a C12 won't hurt it.

    Was the input shaft replaced or reused?
     
    BoxCarKidd Thanks this.
  11. lester

    lester Road Train Member

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    My dealer told me a 2250 easy pedal will wear out all my linkage bushings rather prematurely. I'm running an 2050 behind 700ish hp. And I'm not easy on it either, not following the Miller up hill hard on it but... You'd probably be fine with an 1850 or even less behind that hopped up C-12.
     
    Don379 Thanks this.
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