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Np203

Discussion in 'The Garage' started by supernaut, Jul 24, 2005.

  1. supernaut

    supernaut Registered Member

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    I'm getting ready to wrestle my NP203 back into place. where is the fill hole on these? there is a square plug with a 1/2" drive type looking nub on it. that looks like it will be about halfway up the np203 case when it's installed. should i pump gear oil in that sucker? is 1/2 way full sound right? My manual is one of those plain vanilla haynes/chilton types and shows drain and fill plugs that are not present on my tcase.
     
  2. Okiemuddog

    Okiemuddog 1/2 ton status

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    your fill plug will be on the back of the case aout half way up with a square head pipe plug, and you want to refill with 10w30 not gear oil, the gear oil is too thick for the 203.
     
  3. Tom E

    Tom E Registered Member

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    Yes, that sounds like the correct plug. To fill it I drilled a hole in the floor pan right above the transfercase and put a big rubber hose down through and into the plug and funneled the 10w30 in. Made it VERY easy. Mine is strickly a trail rig though, so that might not work for you. I put about 3 or 3.5 quarts of oil in too.
     
  4. supernaut

    supernaut Registered Member

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    thanks for the tips! I'll make sure i put the right damn oil in it. It has smelled strongly of the fishy gear oil stench the whole time i've had it out. 10w-30 doesn't do that, right?

    well i'll check the manual and make sure we are all on the same page. i hope the previous owner didn't pump gear oil in the sucker. if so i'll do a couple of drain and fills over the next 2,000 miles to get it all flushed out. good god i hope he didn't use synthetic gear oil.
     
  5. Tom E

    Tom E Registered Member

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    My oil came out pretty easy. I removed the 2 bottom bolts on the circular bolt pattern directly under the plug and it all came out. Mine was actually a milky looking color with a little brown to it. Too many creeks and mud puddles :crazy:
     
  6. 78Suburban

    78Suburban 1/2 ton status

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    Tom E,
    this is off the subject, but you live in Columbus??? I live not far from there, and go to CSU. We need to go mud boggin!! email me at speedy_buck@hotmail.com

    sorry about the annyoing post yall... I am going to chance the oil in my 203 the this weekend as well., I was wondering, so I need to put anytype of thread sealant on the bottom drain bolt??
     
  7. Tom E

    Tom E Registered Member

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    Cool. We have a local club here in Columbus. You should check it out and come riding with us. http://www.HavocOffroad.com/
     
  8. 78Suburban

    78Suburban 1/2 ton status

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    Tom E,
    where do yall meet? what type of wheelin do yall do and how many people are in the club? how do I join? Where do yall wheel?
     
  9. Tom E

    Tom E Registered Member

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    Sorry to high jack the forum. Y'all can move this post if you need to.
    You can sign-up at http://www.havocoffroad.com/forum-register-new.html be sure to introduce yourself. We have a few different places we go riding. We usually post up about a week before we meet with all the details. We do just about everything...some of the guys are CRAZY :bow: we don't do the muddin to much, cause it tends to brake a lot more stuff. Come on over, and we'll give you all the details. :wink1:
     

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