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Changing seal/O-ring @ trans. linkage?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 76jime, Jun 5, 2006.

  1. 76jime

    76jime Registered Member

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    Newbie here with a question. How do you change the seal/o-ring around the bolt that connects the linkage through the trans? Is it done from inside (removing the pan) or the outside. It's a 76/400 Jimmy with a TH350 trans.
    Part #?
    Thank you for your help.

    Trans 002.jpg
     
  2. FWP

    FWP CRS

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    Unfortunately I don't think you can get it out from the outside without damaging something. IIRC the valve body must be removed to get the manual shaft out of the case.
     
  3. 1979jimmy350

    1979jimmy350 1/2 ton status

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    you can pop the seal out with a screw driver and then use a socket to seat the new seal it is not very hard at all and does not requrie tearing into the tranny
     
  4. dyeager535

    dyeager535 1 ton status Premium Member

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    From the picture, that seal looks like it would be LOADS of fun to try to dig out with a screwdriver...
     
  5. 1979jimmy350

    1979jimmy350 1/2 ton status

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    if you can't get to it with a screw driver you can take just the shaft out and not have to remove the valve body, when the pan is off remove the clip that is on the shaft then remove the nut. the shaft will slide out and it will be eaiser to change the seal.
     
  6. 76jime

    76jime Registered Member

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    OK, I'm going to take the pan off and remove the shaft from the inside. More work, less risk. I'd hate to gouge up the trans. case removing/installing a $3. part.
    Thanks again for the help.
     
  7. mouse

    mouse 1/2 ton status

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    You can buy a tool specifically for removing that seal...makes it tons easier, especially if its in the truck. Maybe even try "borrowing" one from a trans shop - they are small enough, and can't be expensive.
     
  8. 76jime

    76jime Registered Member

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  9. mouse

    mouse 1/2 ton status

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    Thats the one, sorry I couldn't find a picture yesterday.
     
  10. 76jime

    76jime Registered Member

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    Great tool! 5 minutes seal changed..The End.
     
  11. mouse

    mouse 1/2 ton status

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    The right tool makes some difficult jobs too easy.
     

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