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    Guest Message by DevFuse
     

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    truck has a bad vibration



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    10 replies to this topic

    #1 OFFLINE   Keffer inc

    Keffer inc

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    • Location:Chesapeake, VA, USA
    • Make:Mack
    • Model:CH613
    • Year:1994

    Posted 09 December 2013 - 03:10 PM

    I jacked up the front and found some play in the steering gear box, kingpins drive shaft drag link seem fine, is that little play inside the box enough to do that, and can it be adjusted, I see something above the grease fitting, do I just turn that?

    #2 OFFLINE   Keffer inc

    Keffer inc

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    • Year:1994

    Posted 09 December 2013 - 03:12 PM

    It is a 99 Ch613 And starts vibrating at 45-50 mph and higher.

    #3 OFFLINE   84superdog

    84superdog

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    • Year:85

    Posted 09 December 2013 - 05:33 PM

    Don't tighten up your gearbox, if your having a vibration its more than likely a balance issue. What kind of vibration, thru the steering wheel, feel it thru the seat?

    "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin

     

    "If your gonna be STUPID, you gotta be TOUGH" 

     

    "You cant always get what you want, but if you try sometimes you get what you need"


    #4 OFFLINE   j hancock

    j hancock

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    Posted 09 December 2013 - 05:49 PM

    Did this start after the accident?


    Jim

     

    It doesn't cost anything to pay attention.


    #5 OFFLINE   Challenger

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    Posted 09 December 2013 - 06:39 PM

    Rear air ride suspension?  Ride height problem?



    #6 OFFLINE   theakerstwo

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    Posted 09 December 2013 - 06:44 PM

    Or don't forget mud being inside of the wheels.I have seen some of that and it can be real rough depending on how much is stuck in there.


    glenn akers

    #7 OFFLINE   Keffer inc

    Keffer inc

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    Posted 10 December 2013 - 08:13 AM

    It felt like the drive shaft, but everything is tight and normal. Sometimes the vibes come and go. It did seem to start around the time of the accident. I have some play in my tie rods that connect the wheels together too, that with play inside the box I guess is my problem? The thing of it though is my steering wheel still stays sstraight if I let go, so that's the mystery to me.

    #8 OFFLINE   2stacksuperdog

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    Posted 10 December 2013 - 08:36 AM

    Check carrier bearing, and u-joints. may look and feel tight but still be bad


    • blackdog2 likes this

    Matt


    #9 OFFLINE   Keffer inc

    Keffer inc

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    • Year:1994

    Posted 14 December 2013 - 12:48 PM

    Thanks for the responses.  2stacksuperdog was close, the pinion on the back of my transmission has a bad bearing? I was about to take the drive shaft off and go through the gears to see if it was inside there, but as I was going on my first bolt, I noticed the pinion had lots of slop in it, and the seal is bad too, (truck leaks everything, everywhere) So does anyone know how much this project will suck? I noticed four bolts going around the pinion, is it as simple as taking the yoke off and pulling the plate off to get the bear(s) replaced? or does the entire back half with all the counter shaft bearings and stuff come off too? estimated time frame?  Its a Spicer 10 speed transmission as well (Spicer SD-PS-10) and I cant find any pictures of the back half taken off, so anyone that can tell me anything, please don't hold out. Thanks


    • 2stacksuperdog likes this

    #10 OFFLINE   Kristen

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    Posted 16 December 2013 - 01:13 AM

    If it's diesel truck vibration is common..



    #11 OFFLINE   84superdog

    84superdog

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    Posted 18 December 2013 - 08:48 AM

    Most of the time its just the back bearing since it gets less oil, I just swapped the one in my 9 speed. No big deal really you don't even have to pull the output shaft if it's just the back bearing, just pop the yoke off, pull the speedo housing and pull the back bearing, re install new bearing, speedo housing gasket and output seal, yoke and drive line.

    "Any Society that would give up a little LIBERTY to gain a little SECURITY will Deserve Neither and LOSE BOTH" -Benjamin Franklin

     

    "If your gonna be STUPID, you gotta be TOUGH" 

     

    "You cant always get what you want, but if you try sometimes you get what you need"





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