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REAR MAIN SEAL ON 82 6.2L

Discussion in '1982-Present GM Diesel' started by josephn, Sep 17, 2001.

  1. josephn

    josephn 1/2 ton status

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    Location:
    Utah
    I AM LEAKING PRETTY BAD FROM MY REAR MAIN SEAL.
    IT LOOSES ABOUT A HALF A QUART A DAY. MORE WHEN IT IS PARKED UP HILL.
    HOW DIFFICULT IS IT TO REPLACE IT?
    DO I JUST DROP THE OIL PAN AND PULL THE REAR MAIN AND REPLACE IT OR DO I HAVE TO DO ANYTHING SPECIAL?
    THANKS.

    1982 6.2L Diesel K5 Blazer, TH700, 31 inch tires.
    Fire ALWAYS makes it better.
     
  2. DieselDan

    DieselDan 1/2 ton status

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    Pretty much. Drop the pan, loosen up the main caps, remove the rear main, use a pick and/or screw and pull the seal out. Originally '82 6.2s had a rope seal, i believe this can be replaced with slightly better two piece neoprene style use '85(?) on up.

    Real trucks don't have spark plugs!
     
  3. josephn

    josephn 1/2 ton status

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    Cool thanks.
    I never thought about using the normal neoprene seal instead of the roap one. Can you really do that? If so do i just ask for an 85 rear main seal instead of an 82?

    1982 6.2L Diesel K5 Blazer, TH700, 31 inch tires.
    Fire ALWAYS makes it better.
     
  4. BlueBlazer

    BlueBlazer 1/2 ton status

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    I just did this last winter so the process is still pretty fresh in my mind if you have any questions. I do remember that I got the seal at Advance Auto Parts. It was made by Fel Pro and was about 20 bucks. It was a two piece rubber ( or some similar compound ) seal. Me and others here who have done this before can talk you through it. Its not as difficult as you may think.

    82 K5, 6.2L Diesel, sm465, np205, 14 bolt welded, 8 lug 10 bolt lock right, 410 gears, 35" Mud Kings
    SPEAK SOFTLY AND DRIVE A BIG TRUCK
     

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