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Questions about TRDOR 4WD engagement

Discussion in '3rd Gen. Tacomas (2016-2023)' started by RmikeD, Aug 29, 2022.

  1. Aug 29, 2022 at 3:02 PM
    #1
    RmikeD

    #1
    RmikeD [OP] Well-Known Member

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    My 2016 runs fine but I am not sure about how the ADD functions as opposed to the transfer case. When you engage to 4WD Hi what exactly is going on in the front diff ? I assume the actuator on the transfer case has to engage to front driveshaft for 4WD? I also assume that same actuator is involved in achieving LOW range? So the transfer case actuator has 2 functions? Am I correct the front driveshaft does not rotate when in 2WD? If there is an article that explains this for which there is a link I would appreciate it. My previous Tacoma was a Gen 2 with manual locking hubs and manual transfer case and 4WD levers. Thanks
     
    RmikeD, Aug 29, 2022
    #1
  2. Aug 29, 2022 at 3:16 PM
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    malatx

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    malatx Well-Known Member

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    malatx, Aug 29, 2022
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    Tocamo likes this.
  3. Aug 29, 2022 at 3:16 PM
    #3
    mtip

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    mtip Go Outside & Play!!!

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    mtip, Aug 29, 2022
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    tcjacado likes this.
  4. Aug 29, 2022 at 3:52 PM
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    TA2016

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    TA2016 Well-Known Member

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    TA2016, Aug 29, 2022
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  5. Aug 29, 2022 at 4:03 PM
    #5
    malatx

    #5
    malatx Well-Known Member

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    Most, including Toyota specialists, think it's a waste of $$$, but I'd say why not, you will only need to do transfer case fluid probably 3 times in your ownership, that's not a huge fortune being saved going aftermarket
    $30 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)
    75W-90
     
    malatx, Aug 29, 2022
    #5
    TA2016[QUOTED] likes this.
  6. Aug 29, 2022 at 4:18 PM
    #6
    RmikeD

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    RmikeD [OP] Well-Known Member

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    2016 Barcelona Red TRD OR DC V6 Auto, std bed, factory mud guards and bed mat
    Tow package, Factory Tonneau Cover
    MALATX, I just watched the Utube demo. Awesome explanation. Setting up that test rig and cutting access holes in the cases, enables seeing exactly what is moving and how it works. That is an expensive setup. Must be used for training technicians. Thanks a bunch.
     
    RmikeD, Aug 29, 2022
    #6

Products Discussed in

Mobil 1 104361 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)
$29.15
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