1979 International Scout II

[jrfeatherman]

After a few adjustments and testing I got these next markings. I could not get clear markings like some of the pictures I found online but this looked to be right where I needed it. I May be wrong and would like some feed back if you have made it this far in my posts. It would be easier now to make necessary adjustments if needed. Plus I am not done with my axle build. I ran into a little hick up with bearing seals and back lash.

 

[jrfeatherman]

After accepting my markings, I did my pinion preload. (I did not take any picture of this as it was hard trying to set up pinion and take pics as I was alone doing this.) This step was the unknowing factor of this rebuild as my torque wrench only goes up to 150 ft lbs. From some searching I found that the proper torque for the pinion nut is 200-255 from two different sources. So without knowing if I got proper torque this May affect my results. With that being said I torqued down to 150 ft lbs and then did an additional 1/4 turn. I believe this should put me in the ball park. I checked my preload and got a 15.8 ft lb rotational reading. So I figured I was fine since the preload needed to be between 14 and 19 ft lbs. I then put back in the carrier and did my back lash measurements. I set up dial indicator and got a reading of 0.009" reading. This was on the high end but within tolerances (0.004-0.009 one source and 0.006-0.010 another). I figured all was good and put all new bearings on the carrier and reinserted back into housing. After checking back lash again I measure 0.0011 which put me out of specs. I am not sure how much of a difference this would make but any input would be great. I did all the same steps on the front axle but got a little better results as I got 0.006 back lash and 17.9 ft lbs pinion rotational torgue. Like I said any help is great if your keeping up with this build. One of my other hick ups is the rear inner seal is larger then the inner tube diameter. I took some measurements and the seal is roughly 2.5" and the inner tube is roughly 2.25". I am going to call and check if I got proper seals, issue is I have two sets from two kits, and both sets are too big.

 

[ihpartsjeff]

A few pointers that I observed reading your posts. When you went from your test bearings to your final bearings, and the back lash changed, that happens all the time. I would open it up again and adjust that as .011 is too much and will grow bigger as the ring/pinion set breaks in. But before you do, I would suggest getting a better pattern check as I don't like the pattern you have right now. It could be because of the way you achieved getting that pattern though. This is how I check my pattern - yellow marking paint on three teeth, wrap a rag around the pinion yoke in a way that it won't snag went rotating back and forth, box end wrench on the ring gear bolt. Line up the marked teeth near the pinion, then with fast/swift actions, rotate the ring gear back and forth while pulling tight on the rag around the yoke. That will give you a solid pattern check every time.

As for the incorrect seals post up pictures of what you received so we can verify what parts you actually received.

 

[jrfeatherman]

A few pointers that I observed reading your posts. When you went from your test bearings to your final bearings, and the back lash changed, that happens all the time. I would open it up again and adjust that as .011 is too much and will grow bigger as the ring/pinion set breaks in. But before you do, I would suggest getting a better pattern check as I don't like the pattern you have right now. It could be because of the way you achieved getting that pattern though. This is how I check my pattern - yellow marking paint on three teeth, wrap a rag around the pinion yoke in a way that it won't snag went rotating back and forth, box end wrench on the ring gear bolt. Line up the marked teeth near the pinion, then with fast/swift actions, rotate the ring gear back and forth while pulling tight on the rag around the yoke. That will give you a solid pattern check every time.

As for the incorrect seals post up pictures of what you received so we can verify what parts you actually received.

Here are the seals

 

[jrfeatherman]

One set is made in the US and one from Mexico, but both have the same part number

 

[jrfeatherman]

This one is from Mexico

 

[jrfeatherman]

Received part of my rear disk brake conversion kit today and should be getting another shipment with the calipers.

 

[jrfeatherman]

OK after little more adjusting and finding out that after I took the new bearings off, I was missing the 0.0030 from my ring side. I have no clue how that happened. I found another 0.0030 shim and inserted and tried to get my markings again and the were the same, so I assumed I dropped it sometime when I was swapping in new bearings. My back lash was still the same too. I tried getting better markings and they were off still so I adjusted the shim count on the pinion, but in doing so, when I took the pinion back out I destroyed the the baffle so I readjusted my shim count without it. Still got a bad gear reading and so I took out all shims and started with 0. I got a good marking on the tips of the coast and drive, which after looking meant that my pinion was too far. I added .0030 to the shim and got my coast and drive to center up but still close to the tip but a little more toward the center. So I made multiple adjustments to the carrier bearings and ended up adding 0.0015 to the ring side and taking 0.0015 from the opposite side. I got better markings and reduced my back lash. I hope they are better, I kept my new bearing off and going to wait until tomorrow to make any other adjustments. So for now this is what I got now.

 

[jrfeatherman]

Here is the coast side

 

[jrfeatherman]

Here is the new back lash

 

[jrfeatherman]

Finally got the rest of the brake kit in

 

[jrfeatherman]

Got the 6" shackle kit in today

 

[ihpartsjeff]

Here is the new back lash

That pattern is still way off. You need to be in the flank of the gear, not the outer face of it. I would add at least .030 of shim back to your inner pinion bearing race, readjust the backlash, and then recheck your pattern the way I instructed you to. See the attached chart for the pattern you are trying to achieve.

 

[jrfeatherman]

That pattern is still way off. You need to be in the flank of the gear, not the outer face of it. I would add at least .030 of shim back to your inner pinion bearing race, readjust the backlash, and then recheck your pattern the way I instructed you to. See the attached chart for the pattern you are trying to achieve.

Thank you for the help Jeff, I will go at it again tomorrow after work until I get it right. I have to get the the covers I just got in the mail that I ordered from you guys. I was not planning on getting any but I am glad I did. I May have to customize the logo a little to have the IH symbol or Scout II.

 

[jrfeatherman]

The difference in thickness is crazy

 

[jrfeatherman]

Maybe something like this, but we'll see when we get to that point

 

[jrfeatherman]

Ok so I spent roughly 7 hrs today working on getting a good gear pattern (redid front and rear axles). I could not get as good as a pattern as the picture you sent me but I was able to get within the acceptable pattern on the Yukon chart. I realized my big screw up that I have been making from when I started. I must be dyslexic or something, my brain couldnt wrap around the fact that 0.003 is not the same as 0.030. My digital caliper reads down to 0.0001 so I was writing down 0.0030 which threw me off. Frustration got the best of me on this one. I went and got a dial caliper this morning because my digital one was not giving me consistent measurements. I completely redid all my measurements and my values changed slightly. After getting my measurements I started with a 0.030 shim count for my pinon depth and got my shims for the carrier. I had a deep high coast and deep low drive. I needed to lessen the pinion depth and backlash was 0.003. So this gave me a starting point, so thanks for the heads up on the 0.030 increase. After disassembling and reassembling another 10 times trying to get a good pattern I was able to find an acceptable pattern reading. The pictures I will attach are not ideal but I had to use Prussian blue since I used up all my yellow marking compound. So you'll see a slight green tint. I hope this is good enough because I have spent too much time with this. My final pinion shim count was 0.0280, with a 0.006 backlash.

 

[jrfeatherman]

Here is the coast

 

[jrfeatherman]

Here is the drive

 

[jrfeatherman]

I got most of the axles put back together and fresh paint to protect it while I get the suspension together. Rear axle missing spring perches for now until I weld on the new ones.