'83 700r4

Discussion in 'Transmission Forum' started by Chuck, May 5, 2017.

  1. Chuck

    Chuck Full Member

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    Please fill out the following to ask a question.

    MAKE:Chevrolet
    MODEL:K5 Blazer
    YEAR:1983
    MILES:120,000
    ENGINE:350 cid
    DESCRIBE ISSUE....The transmission started leaking from the 2-4 servo cover after replacing the servo gasket and servo cover gasket it still leaks. Is there a certain way to reinstall the gasket? or could there be a bigger problem I'm not seeing? Thanks for the help.
     
  2. kev2

    kev2 wrench

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    I show 700r4 2-4 servo as a series of O rings - attachment.
    Am I looking at wrong component?
     

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    Last edited: May 5, 2017
  3. Chuck

    Chuck Full Member

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    The only other rings I saw were the flat metal rings attached. The only rubber seals that I had seen where the 2 that were replaced
     
  4. kev2

    kev2 wrench

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    hope this helps - sometimes a picture is best.
     

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  5. Chuck

    Chuck Full Member

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    The lasted one you sent was for the 4L60e. I'm wondering why it's still leaking from the same spot. It leaks from the 3 o'clock position from the cover.
     
  6. Chuck

    Chuck Full Member

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    I see why you sent the 4L60E diagram. I had forgotten how identical they are.
     
  7. kev2

    kev2 wrench

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    same trans 700r4 and 4L60
     
  8. Chuck

    Chuck Full Member

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    I just remembered that. Sorry, I'might justhe frustrated. I had already fixed 2 leaks previously and then this one shows up.
     
  9. kev2

    kev2 wrench

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    one of the members here is our resident trans expert - he owns a trans business - He will see this and ad his professional insight when he stops by. Maybe some tips on installing the seals or what may have gone wrong...
    Tell us what were the other leaks - maybe the big picture will help him get a better idea of what going on.
     
  10. Chuck

    Chuck Full Member

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    I had to repair the lower cooling line, because someone had tried to fix it before and flared the end cockeyed and I had to replace the grommet for the dip stick.
     
  11. Chuck

    Chuck Full Member

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    That would be great if he could. Thanks again.
     
  12. bp042665

    bp042665 hunting nut

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    hey Chuck it could be a cracked cover i have only seen that twice also the blue o ring is the outter cover and red is the inner one also i have seen them get pinched on installing it i have done this a few times if it gets cocked eyed going in
     
  13. Chuck

    Chuck Full Member

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    I will check the cover and the servo to make sure the gaskets weren't pinched. I'm just hoping the case didn't get cracked somehow.
     
  14. Chuck

    Chuck Full Member

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    Is there a way to remove the cover without ruining the o ring?
     
  15. bp042665

    bp042665 hunting nut

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    yes once you pop out the lock ring the cover should move to were you can get to the o ring with a small pick get behind the oring and pull it out some while rotating the cover and it should pop right out
     

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