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Np205 Fluids??

Discussion in 'The Garage' started by BizeeB65, May 2, 2006.

  1. BizeeB65

    BizeeB65 1/2 ton status

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    So I bought two np205's from JeffHK5 this weekend. drained out fluids last night to start the SYE kit install :D to the one I am going to use and found two different fluids in them.

    In the sm465 - 10 spline 205 there was a light gear oil.

    In the th350 - 27 spline 205 there was RED TRANNY FLUID??

    :eek1:

    I am confused. Should I refill the 205 I am using (27 spline th350 ) with tranny fluid? It seems that fluid would pass through the front seal into the transmission (since fluid can leak out of there). Any thoughts?

    PS - I have all the tech info offered from a different thread, to no avail with this question.
     
  2. 79k20350

    79k20350 3/4 ton status

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    Either one is acceptabel but most run gear oil.
     
  3. 79k20350

    79k20350 3/4 ton status

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    and no, the 205 is a self contained unit, the fluids do not flow from tranny to tcase
     
  4. BizeeB65

    BizeeB65 1/2 ton status

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    Ahh.... cause I was opened the case without knowing it had tranny fluid it in and was like WOOT! (as it missed the pan and poured onto my hand and the floor).
     
  5. adamforsythe

    adamforsythe 1/2 ton status

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    Yea this is one thing that I was wondering. Since I was going to mate my Np205 to my Th350. But since "the 205 is a self contained unit". I don't have to worry about it. I will put gear oil in the Np205 when I install it.
     
  6. MrArmyAnt

    MrArmyAnt 1/2 ton status

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    I want to rebuild a 205, not sure if it needs it but I figure whyy i got it out... What is SYE?
     
  7. Chaddy

    Chaddy 1/2 ton status GMOTM Winner

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    Slip Yoke Eliminator
     
  8. DEMON44

    DEMON44 Low-Tech Redneck

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    Slip yolk eliminator
     
  9. MrArmyAnt

    MrArmyAnt 1/2 ton status

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    Ok what does it do?

    I'm a little knew to the whole built not bought thing :) Little new in general, 19...
     
  10. BizeeB65

    BizeeB65 1/2 ton status

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    Output shafts on the 205's came with a fixed (non moveable) rear yoke, and a slip rear yoke for the driveshaft.

    First pic has a slip yoke rear output (no yoke attached) on the far right side of the t-case

    [​IMG]

    This pic is of the fixed rear yoke.

    [​IMG]

    The reason for the swap is that one t -case is designed to mate to a manual SM465 transmission, while the one I need is designed to mate to a Th350 transmission.

    Hope that helps.
     

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