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  1. coolpup32

    Converted NP203 grinding sound in 2WD

    would that be this bearing? pulled from here: https://ck5.com/forums/resources/mile-marker-np203-part-time-kit.68/
  2. coolpup32

    Converted NP203 grinding sound in 2WD

    Mine is a rancho suspension kit, i still have the box. i have no clue what a thorington bearing is, googling now. oh goodness, are these hard to find? I was only under the assumption the chain was hard to get!?!?!?
  3. coolpup32

    Converted NP203 grinding sound in 2WD

    I'm going to embed all the images i took today, but look closely at the needle bearings (Pics 5&6) and the thrust washer? (pics 8,9 & 11). The teeth are chewed on pics 2-4 but i dont believe thats the source of the sounds i'm hearing. with the tail housing out i spun the output and it bound up...
  4. coolpup32

    Converted NP203 grinding sound in 2WD

    Thanks Aurora, I'll pay close attention to the pump, it being broke sounds plausible
  5. coolpup32

    Converted NP203 grinding sound in 2WD

    I'm thinking, while you're working at the rear diff, i'll work the rear-output on the tcase. we'll split the work and one of us will find a solution. If weather permits, i'll pull mine tomorrow :headbang:
  6. coolpup32

    Converted NP203 grinding sound in 2WD

    YES! exactly the same for me. this is just in my shop on a jack so not under a load per se... but going up hills, accel / decel i hear it, although much louder and violent than in this video. I havent tried, but i've heard it will not happen when in 4hi
  7. coolpup32

    Converted NP203 grinding sound in 2WD

    Here's the video, you can hear the chatter at 24 & 31 sec mark. its much more noticeable on the road under stresses, etc...
  8. coolpup32

    Converted NP203 grinding sound in 2WD

    I agree. I have slop in my rear diff too, i wouldnt say its excessive though. most of my rear drive shaft slop is in the telescoping piece near the rear yoke (whatever its called). I did something really stupid this morning and jacked the rear-end off the ground and placed in drive, revved up...
  9. coolpup32

    Converted NP203 grinding sound in 2WD

    In 2wd and hubs unlocked, the front shaft isnt under power?? I forgot to mention, my sounds are intermittent, lasting 1-2 seconds and sounding gear like
  10. coolpup32

    Converted NP203 grinding sound in 2WD

    new guy here. I'm having the same problem (grinding/pinging sounds in 2wd). Restoring an old 76 k10 with PT conversion on the np203. Truck only has 60k mi, i was told the chain is stretched but i just pulled the inspection plate. It doesnt have too much slop in the chain, i dont think its...
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