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- Location
- Grove, Oklahoma
Hello everyone! It's been a while since I posted but I ran into a hiccup in regards to the transfer case {NP208} in my M1008. I noticed that ATF was dripping from between the front yoke and the drive shaft u-joint. I removed the four bolts that hold the drive shaft u-joint to the front yoke and received a small puddle of ATF for my efforts. I then removed the nut that holds the yoke to the output shaft and removed the yoke. This time I got a flood of ATF! Fortunately, I had a basin to catch the spill.
Now the tricky part! As you can see in the picture, the nut that holds the yoke to the output shaft has some unusual markings stamped around the edge. There is a - I, II, 3, 3, 6, and 6 stamped around the edge, indicating this nut is somehow clocked, but I have absolutely NO IDEA what these markings mean or how to interpret them. I am hoping someone here has investigated this nut and can tell me what these markings mean, and what the torque specifications for this nut might be.
The next problem I ran into was the rubber washer that is between the nut and the yoke. It seems that this rubber washer is there to stop the ATF from leaving the transfer case between the splines of the yoke and output shaft. Apparently, this process works great as long as the washer is in good shape. As you can see in the picture below, my washer is toast. I tried to source this part at O'Reilly's, Auto Zone, and Napa. It is just not available at the parts houses. I was able to find a picture of this washer in the -20P, but there was no part number listed. At first, I didn't realize it was a washer. In the tech manual, it looks like a gear or a bicycle sprocket. I did however, find this little gizmo at "Team Grand Wagoneer" for the cost of $1.75 with a $7.00 transportation fee. I decided I would order two since it wouldn't change the shipping cost. Although my local GM dealer didn't have this washer, the part number he provided is 14071715. Hopefully, I will get the replacement washer in a couple of days. Until then, my truck is dead-lined.
If any of you have had this problem before, or if you know what the markings mean on the nut, or if you have the torque specifications to reinstall this nut, I would appreciate a response. Thank you all for your knowledge and willingness to help us.
![20230809_134618[1].jpg](https://www.steelsoldiers.com/data/attachments/658/658653-00afb3dca63dd889df3fcca54ebea4b0.jpg "20230809_134618[1].jpg")
Now the tricky part! As you can see in the picture, the nut that holds the yoke to the output shaft has some unusual markings stamped around the edge. There is a - I, II, 3, 3, 6, and 6 stamped around the edge, indicating this nut is somehow clocked, but I have absolutely NO IDEA what these markings mean or how to interpret them. I am hoping someone here has investigated this nut and can tell me what these markings mean, and what the torque specifications for this nut might be.
The next problem I ran into was the rubber washer that is between the nut and the yoke. It seems that this rubber washer is there to stop the ATF from leaving the transfer case between the splines of the yoke and output shaft. Apparently, this process works great as long as the washer is in good shape. As you can see in the picture below, my washer is toast. I tried to source this part at O'Reilly's, Auto Zone, and Napa. It is just not available at the parts houses. I was able to find a picture of this washer in the -20P, but there was no part number listed. At first, I didn't realize it was a washer. In the tech manual, it looks like a gear or a bicycle sprocket. I did however, find this little gizmo at "Team Grand Wagoneer" for the cost of $1.75 with a $7.00 transportation fee. I decided I would order two since it wouldn't change the shipping cost. Although my local GM dealer didn't have this washer, the part number he provided is 14071715. Hopefully, I will get the replacement washer in a couple of days. Until then, my truck is dead-lined.
If any of you have had this problem before, or if you know what the markings mean on the nut, or if you have the torque specifications to reinstall this nut, I would appreciate a response. Thank you all for your knowledge and willingness to help us.