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How do I change T-case seals?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 77K5Blazer, May 7, 2001.

  1. 77K5Blazer

    77K5Blazer 1/2 ton status

    Joined:
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    Location:
    Hood River, Oregon
    I need to change out the seal between the T-case and Tranny, or I assume I do. I have a pretty good leak coming out of there, and while I am at it, I am going to change all the gear oil in the tranny and T-case. What type of gear oil should I use, and what are the part's numbers on the seals for a SM465 to and NP205? A detailed description of how to change the oil, and how to change the seals would be greatly appreciated!!!! Also, how much $ do you think it would cost for all this, I am on a tight budget! Thank you to all that can help me, and this really is a wonderful site!!!

    1977 Blazer, GM350, SM465, NP205, Dana 44/ 12bolt, 31x10.50r15 BFGs [​IMG]
     
  2. chrishoz

    chrishoz Registered Member

    Joined:
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    ITS NOT TO HARD BUT TOU WILL NEED 2ND PERSON.
    AS FAR AS PARTS CALL 4X HEAVEN IN N.Y.
    www.4xheaven.com
    1-800-800-1679
     
  3. ftn96

    ftn96 1/2 ton status

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    Location:
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    Not hard. You need to drain the fluid from the T-case. Disconnect your driveshafts, and remove the T-case from the tranny. Then drain the fluid from the Tranny, then replace the seal. Refil the tranny with the fluid recommended in your owners manual. Probably 80w90. Then replace the T-case, fill it up and reconnect everything and go.

    Will work for beer, parts and tools.
    90-350TBI-TCI700-241-33"-10/12 bolt w/4.10's,
    <A target="_blank" HREF=http://www.nashvillek5.freeservers.com>http://www.nashvillek5.freeservers.com</A>
     

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