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rear main seal

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by mccomas, Mar 31, 2004.

  1. mccomas

    mccomas 1/2 ton status

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    when i replace my transmission next week, i want to replace the rear main seal. do i need any special tools to get it out or back in? any tips...
     
  2. dave_90_blazer

    dave_90_blazer 1/2 ton status

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    that should be a one piece rear main, hardest part is getting it out

    pull trans, pull flywheel/flexplate, now the fun part, I have had luck drilling a real small hole in the steel shell of the old seal, then threading in a screw, then prying on the screw with 2 pry bars until the seal pops out
     
  3. bigburban383

    bigburban383 1/2 ton status

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    You take off the trans, flexplate, and you got to drop the only pan. Then unbolt the part that holds the seal and replace the seal, you probably need a new gasket too. Be very gentle when putting it back on, use assemble lube or atleast some oil on the seal when you reinstall. Like above, I guess you can try and do what he said so you wouldn't have to drop the oil pan and buy a new pan gasket. Good luck.
     
  4. 4xcrazy

    4xcrazy 3/4 ton status

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    If it's a one piece seal you don't need to drop the pan, i replaced mine without dropping it when the trans was out, i simply tapped mine out, got it to where it wasn't straight and just kept tapping and pryed and it popped out. Then oiled up the new one and reinstalled it. /forums/images/graemlins/thumb.gif
     
  5. bigburban383

    bigburban383 1/2 ton status

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    [ QUOTE ]
    If it's a one piece seal you don't need to drop the pan, i replaced mine without dropping it when the trans was out, i simply tapped mine ont, got it to where it wasn't straight and just kept tapping and pryed and it popped out. Then oiled up the new one and reinstalled it. /forums/images/graemlins/thumb.gif

    [/ QUOTE ]

    Damn, that blows /forums/images/graemlins/doah.gif
     
  6. bablazer73

    bablazer73 1/2 ton status

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    On the 86?? shouldn't that still be the old 2 piece rear main?????
     
  7. pauly383

    pauly383 Daddy383 Staff Member Moderator

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    I think there may of been some leftovers installed, but for the most part 86 was onepiece seal. /forums/images/graemlins/thumb.gif /forums/images/graemlins/k5.gif
     
  8. 84_Chevy_K10

    84_Chevy_K10 Banned

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    86 is 1 piece seal, my engine is an 86.
     

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