Inverter coolant refill procedure?

Discussion in 'Generation 1 Prius Discussion' started by Itsmeonprius, Jul 10, 2018.

  1. Itsmeonprius

    Itsmeonprius Member

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    So I'm due to install a new engine (new to me) with the transaxle so I'll need to refill the inverter coolant as part of this process. I believe the Techstream software has to assist with the refill so has anybody done this and if yes, any hints or tips or a link to a write-up?


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  2. ChapmanF

    ChapmanF Senior Member

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    You might check this post. A key insight for gen 1 is that one of those two "bleed" valves is on the suction side of the pump and will draw air in when opened, if you're not careful.

    No particular need for techstream. The gen 1 pump runs whenever the key's on.

    -Chap
     
  3. Brian in Tucson

    Brian in Tucson Active Member

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    You don't need Techstream to fill the inverter coolant system And there are Youtube videos and other writeups to get you thru the burping. Good luck with getting the newer engine in. Kinda fascinated.
     
  4. greasemonkey007

    greasemonkey007 Active Member

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    I always use a vacuum pump to pull it in a vacuum. If it holds, I just open a valve and it fills itself with no air bubbles.
     
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  5. Brian in Tucson

    Brian in Tucson Active Member

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    I don't do mine very often, but a vacuum filler is a nice tool to have.
     
  6. Itsmeonprius

    Itsmeonprius Member

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    Brilliant thank you.

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  7. Brian in Tucson

    Brian in Tucson Active Member

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    The left fitting is the suck one, the right is the spew one.
     
  8. ChapmanF

    ChapmanF Senior Member

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    That's right, if you're standing in front of the hood looking back at the car—but that's the opposite of the way 'left' and 'right' are used throughout the Repair Manual, etc., where they always mean 'left' and 'right' when facing the way the car is facing (that is, with the same meaning as 'port' and 'starboard', but I guess they didn't want to make the car sound like a boat).

    I called them "the nearer to the side of the car" (spew) and "the one nearer the center" (suck) to avoid any such confusion.

    -Chap
     
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