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  1. I

    Transfer Case NP-203 issues

    Howdy guys, well I got the oils changed out, and no joy. After a short 20 min drive it spit out 10-12 oz of 10w-30 motor oil out the breather into a catch can I rigged up. It was also super hot to the touch. Before with the gear oil in it would never get hot, it would be warm but could hold your...
  2. I

    Transfer Case NP-203 issues

    Hey guys, just wanted to give a quick update. We are in the middle of moving right now so I haven't been able to change the oils out yet, but I should be able to get to it this week and will keep you posted on how it goes. Just wanted to make sure you didn't feel like i got what I needed and...
  3. I

    Transfer Case NP-203 issues

    You guys are awesome, thank you so much. Really appreciate taking the time to post all that, with pics even. Seriously a huge blessing!
  4. I

    Transfer Case NP-203 issues

    got the linkage to work and go into all ranges with foot off the brake, so awesome thank you. Question about changing oils is it ok not being able to get every bit of gear oil out and add 10-40w? I'll drain it as much as possible from bottom bolt and jack it up to get as much out as possible but...
  5. I

    Transfer Case NP-203 issues

    appreciate the feedback guys. My haynes book called for 80w-90 gear oil for conventional and 10-40 for full time so i messed that up. I'll get it drained out and swapped over to 10-40 and update you guys. Ill try the flat ground neutral also. Thanks again.
  6. I

    Transfer Case NP-203 issues

    Hey guys, 79 k10, Having issues with t. case where after 15-20 min of driving at 55 mph+ it pumps gear oil out of the breather tube. I just got this in and it already had the full time 4X - conversion done where it's not full time now and i put locking hubs in. I put an elbow off the fill hole...

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