700R4 Transmission Pressures

Discussion in 'Transmission & Driveline Topics' started by Bandit723, Nov 20, 2020.

  1. 77 cruiser

    77 cruiser Veteran Member

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  2. Twisted_Metal

    Twisted_Metal Administrator Staff Member Lifetime Gold Member

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    The pressure should raise as soon you move the accelerator above idle.

    Starting at too high of pressure and sneaking it downward is the safest way to get it right.

    Glad you got it adjusted correctly!
     
  3. Bandit723

    Bandit723 Veteran Member

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  4. 77 cruiser

    77 cruiser Veteran Member

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    The cable has to be tight at WOT, if the geometry is right that's the only way to do it.
     
  5. 80sz

    80sz Veteran Member

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    See ya modified the tvcable bracket ...lol.
     
  6. camaro71/holland

    camaro71/holland Veteran Member

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    The cable should be tight from the beginning on.... if not, it's operating nuffin.

    You want a pressure rise even with a slight touch of the accelerator, so it needs to pull the cable/depress the tv plunger in the case.

    At WOT the plunger needs to be depressed all the way into the VB.
     
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  7. 77 cruiser

    77 cruiser Veteran Member

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    Exactly should have said fiddle string tight. Yes you need rise at movement of the throttle.
     
  8. Bandit723

    Bandit723 Veteran Member

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    does it matter cable pulls straight.

    20201122_160033_001.jpg
     
  9. Bandit723

    Bandit723 Veteran Member

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    Reason i put the line pressure gauge on was to be sure the 1. the trans was pumping out enough pressure thru the gears 2. was to make sure the cable got adjusted out correctly on the idle side. As folks have said you want the rise to happen just as you crack the throttle. What i have seen there can be quite a gap from when adjusting the cable on the idle side. This trans has about a 3/4 inch pull before seeing a rise in pressures. I could have easily miss adjusted it.
     
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  10. 80sz

    80sz Veteran Member

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    The tv cable travel could be off depending where the cable pulls from with the arc being different
     

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