Noise when letting clutch out fast

Discussion in 'Trucks [ Eighteen Wheelers ]' started by gunner76, Jun 7, 2016.

  1. gunner76

    gunner76 Medium Load Member

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    I had to adjust my clutch today to get it back to where it needs to be(it was only off a little bit). When checking everything over afterwards I let the clutch pedal out too fast(like letting your foot slip off the pedal)and could hear a grinding sound from underneath that lasted about a second. It would only do this if I pushed the clutch all the way to the floor and then let the clutch out fast, otherwise it didn't make any sound. A friend told me that if the engine was running that was the sound of everything getting up to speed and it was normal. Is this true, I don't remember hearing the noise before but then I usually don't pop the clutch either and when I have I only remember hearing a slight meshing sound that barely lasted a 1/2 second.
     
  2. x1Heavy

    x1Heavy Road Train Member

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    If you let it out too fast one of two things will be true.

    You induce a twist into your tractor and feel it as the tractor tries to take off hanging a steer into the air and then stall.

    The other is that you take off smartly and now have a problem of chasing the gears, true especially if on a downgrade.

    In the trucks Ive had, I always need them to break loose just so about a inch above the floor. Anything closer to that got them adjusted. That left me with about 3 inches to work with for sliding tandems etc near the top.

    Does that even make sense to any of you? It's a #### sight easier to show it to you than to write this. and not have you all throw ######## at me.
     
  3. BigPerm

    BigPerm Medium Load Member

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    Do it too many times and I promise you it's the sound of $$$$$$'s FLYING out of you wallet.
     
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  4. Roberts450

    Roberts450 Road Train Member

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    Guys Im pretty sure he is talking about being in neutral and not in gear.

    And you friend is kinda right. You got the input, two counter shafts and pto gears that have some slop in the teeth and bearings that will make some noise when hit with a sudden load. Not really normal but is to an extent depending on the trans mileage.
     
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  5. gunner76

    gunner76 Medium Load Member

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    Roberts450 is correct, I was talking about being in neutral while sitting stiff. I totally forgot to put that in the original post. I would never pop the clutch while trying to take off.