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clutch free play or not in 2009 Tacoma?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by pietro, Aug 27, 2008.

  1. Aug 27, 2008 at 6:37 AM
    #1
    pietro

    pietro [OP] Member

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    Hi everybody, I have a new Tacoma 2009 4WD short cab that I got after the recall of my previous 1998. Now I have a question: I feel that the clutch does not have the free play I'm used to. Somebody told me that this is because the clutch in the 2009 Tacoma is hydrostatic. I could not find anything on the manual except the recommendation to control the free play of the clutch. So I'm confused. Any help? Thanks
     
  2. Aug 27, 2008 at 8:34 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
    Tenoe, AZ
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    4.10 gears, sliders, and lots of buttons.
    Its not "hydrostatic"

    http://www.insidersecretstohydraulics.com/hydrostatic-transmission.html

    A hydrostatic transmission consists of a variable-displacement pump and a fixed or variable displacement motor, operating together in a closed circuit. In a closed circuit, fluid from the motor outlet flows directly to the pump inlet, without returning to the tank.
    As well as being variable, the output of the transmission pump can be reversed, so that both the direction and speed of motor rotation are controlled from within the pump. This eliminates the need for directional and flow (speed) control valves in the circuit.
    Because the pump and motor leak internally, which allows fluid to escape from the loop and drain back to the tank, a fixed-displacement pump called a charge pump is used to ensure that the loop remains full of fluid during normal operation. The charge pump is normally installed on the back of the transmission pump and has an output of at least 20% of the transmission pump's output.
    In practice, the charge pump not only keeps the loop full of fluid, it pressurizes the loop to between 110 and 360 PSI, depending on the transmission manufacturer. A simple charge pressure circuit comprises the charge pump, a relief valve and two check valves, through which the charge pump can replenish the transmission loop. Once the loop is charged to the pressure setting of the relief valve, the flow from the charge pump passes over the relief valve, through the case of the pump or motor or both, and back to tank.

    I belive the clutch actuation is very similar in operation to your '98, but clutch "feel" varies vehicle to vehicle. Check the "free play" and make sure it is in spec. it should be listed in the manual. :)
     
  3. Aug 27, 2008 at 5:37 PM
    #3
    pietro

    pietro [OP] Member

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    Thank you Chris. Sorry if I'm so inexperienced, but how do you check the "free play"? With the foot I do not feel any play. Thanks again.
     
  4. Aug 27, 2008 at 6:12 PM
    #4
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    FlimFlubberJAM
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    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    Is your issue lack of play, or too much play? I think Im confused as to what you may be asking. I can remember off hand on how to measure the peddle free play. I think it should have about 1" of free play before you feel the clutch peddle start to have resistance, but Im not certain on this.
    FWIW, I think your clutch may be fine, it just feels differently than your '98. Is it haveing engagment issues?
     
  5. Aug 28, 2008 at 4:11 AM
    #5
    tjdriscoll

    tjdriscoll Active Member

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    OEM Foglights, iPod adapter, Bedlights-Underbody lights, more to come soon.
    the clutch on my 07 was very stiff when i got it. i had the same thing your talking about. after about a month or so it should loosen up and give you that free play zone.
     
  6. Aug 28, 2008 at 5:01 AM
    #6
    pietro

    pietro [OP] Member

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    Thanks Chris, I feel NO free play at all and the resistance of the pedal seems equal for all the travel of it. No engagements issues. Thanks.
     
  7. Aug 28, 2008 at 5:04 AM
    #7
    OLEFART

    OLEFART Active Member

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    northern illinois
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    09 base
    integrated sirius, tonnaue cover
    i've got about 3000 miles on my 2wheel drive reg cab base tacoma , i thought the same about the clutch at first(not enuff free travel) but it seems to be breaking in fine or i'm getting used to it?
     
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