How to make the clutch pedal softer?

Discussion in 'Freightliner Forum' started by bigtire, Oct 10, 2012.

  1. bigtire

    bigtire Light Load Member

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    My clutch is not hydronic, all mechanical. Do you think the hydronic parts from another Freightliner will fit to my truck without any modification? Спасибо тебе.
     
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  3. bender

    bender Road Train Member

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    You can't just switch to a lighter clutch in a higher torque output application, it will slip and/or tear the dampners out of the clutch discs from the torque load. It would be very short lived.
     
  4. bigtire

    bigtire Light Load Member

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    Las Vegas, Nevada
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    Maybe I should ask freightliner dealer, what other clutches are available for this motor. The second thing is to modify the clutch lever, weld another piece of metal to it for extension ......
     
  5. Pablo-UA

    Pablo-UA Road Train Member

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    I sugest there would be many of modifications, becouse first of all you need clutch pedal unit with MC, you need to find place for clutch fluid reservour, you need to find clutch servo that really tifs your truck (it is not easy like on Volvo, we used old FH12 servo located on left side of tranny and connected with arm with long rod). EU servos got all metric threads so you have to use metric fittings...

    IMO, too much work to do it.

    It is easy to do it with Volvo only
     
  6. bender

    bender Road Train Member

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    I would forget the idea of going to a lighter clutch as it will only bring along a different problem. Lengthening the cross shaft lever would help some, but more assist would be gained at the bell crank closer to the pedal. If you mod the lever, I would have one made to the desired length all one piece.
     
  7. bigtire

    bigtire Light Load Member

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    Las Vegas, Nevada
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    It looks like to much of a hassle. If freighter doesn't have "official" softer clutch
    Plate , I will just sell the truck and get a ultrashift .
     
  8. bender

    bender Road Train Member

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    That might be the best decision.
     
  9. Frenzy

    Frenzy Medium Load Member

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    http://www2.dana.com/pdf/C102.PDF


    this came to mind...
     
  10. JohnP3

    JohnP3 Road Train Member

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    Extending the clutch lever will rearange the adjustments, avalable for the clutch. Changing the length, you have to either reduce the free-play, or the clutch break to keep the same clearance.
    Greasing the clutch cross shaft in the cab it really does work. We had a group of cab overs that were stiff to push, They dismantled the interior to get the linkage out and replaced all the worn parts, a month later the problem returned. In those units to get proper clutch adjustment we had to re-drill the clutch lever shorter.
    I was doing a Job on the motor and had the cab all the way over , the driver came in complaining about the clutch pedal effort. They added a condition, and I looked at the problem with the cab up the pedal effort was hard down and it would not come back, I drilled it and greased it, and with the cab down greased the slide sleeve. The driver took it for a drive while I cleaned the bay, it was a lot better, we had to re-grease it a few times, but it cured the problem.
    I like to do the cheap stuff first, You can get an easy pedal clutch, you can not use a lower rated clutch.
     
  11. Pablo-UA

    Pablo-UA Road Train Member

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    I have easy pedal in my truck now. but it is very hard to depress comparing with any european truck.

    really i do not understand why american truck makers do not use servos
     
    bigtire Thanks this.
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