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Changing NP203 oil?

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by 76_Cheyenne, Aug 25, 2002.

  1. 76_Cheyenne

    76_Cheyenne 1/2 ton status

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    I'm about to change my Np203 T-case oil and I only have one plug at the top of the t-case where the oil goes in. To drain it should I remove the case cover or use a pump to suck the old oil out? Thanks
     
  2. m j

    m j 1/2 ton status

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    IIRC the lowest bolt on the aluminum cover is a through hole, pull the bolt and it drains
     
  3. thatK30guy

    thatK30guy 1 ton status Premium Member

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    What m j said....

    On the very back of the t-case, you will see the aluminum cover (round). Simply remove the lowest bolt and let the fluid drain out.

    Helpful tip: park on an upward hill slightly, or on ramps. This will tilt the truck up in the front to allow the fluid to drain out better. It will also get all/most of the fluid out. /forums/images/icons/wink.gif
     

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