Any good resources for antique trucks? Working through some 2 speed rear end issues on a 1959 B-162

I have a 1959 International B-162 medium duty truck, and having difficulty finding resources for repair advice. I know this forum isn't really geared towards old trucks, but thought maybe some people here would know where to go, or what to do with these old beasts? The International forum I usually hang out on is normally for Scouts, and some of the 60s/70s pickups, but really doesn't have many people familiar with the bigger trucks.

My electric 2 speed rear end (Eaton 13600) isn't properly shifting to high range, and I'm fairly confident it's due to excessive wear on the high speed clutch plate, but wanted to confirm it, as this is the first "big" truck I've ever played with or had apart.

 

Very similar to that one, yes. Mine apparently was one of the original test mules for the diesel engine, and has BD-162 on the door tag. LST confirmed it shipped with a diesel, but now had a BD264 in it and T30 OD trans.

 

Differential is already out of the truck, and on the bench, lol. I've also already been through the wiring, switch, shift motor, limit switches, etc. It seemed to shift OK when I was in reverse, but wouldn't catch at all in forward. I eventually got to the point of attempting to shift it into high manually, by hand, and again, it would engage when turning the driveshaft in reverse, but the shift fork would "ratchet", or wanted to "cam out" when spinning the driveshaft in forward.

I have a copy of the Dana/Eaton 2 speed axle service manual, but it doesn't really have a good image of what new gears look like as opposed to what excessive wear looks like, and I THINK there's excessive wear on the high speed clutch plate teeth -



This is both sides of the sliding clutch (took a pic, spun it 180*, took another pic).



I also found that when spinning the sliding clutch by hand, and pulling on it, to simulate shifting it while rolling, it again wanted to cam out in one direction but hooked up in the other direction. I tried flipping the high speed clutch plate around, and then the sliding clutch has positive engagement in both directions as expected. I thought about just leaving the plate flipped, and putting it back together. However, I noticed the service manual stated that the clutch plate teeth have a 15* chamfer on one side, and a 35* chamfer on the other, and to ensure that it is installed in a specific direction, so I didn't know if flipping the plate would just trade one set of problems for another.

 

That was a score, thanks! Geoff sent a copy of the parts book, which I was able to use to confirm that a Ford clutch plate I found on eBay would work in my axle as well. $29 shipped!

I haven't yet found a similarly cheap sliding gear, but I suspect that the wear on mine isn't nearly enough to be concerned about yet. Almost makes me wonder if a PO hadn't already tried replacing the sliding gear in an attempt to get the axle to shift properly, maybe getting a few more miles out of it before selling it to me, lol.

Either way, I'm not complaining, and I'm looking forward to getting this old iron up and going again. Thanks much!