Thumper gets another Mod

The CJ2A in my avatar picture is way past due for a transmission/transfer case swap. Both make every kind of noise possible, and both pop out of gear going down hill. These have gear noise, bearing noise, clunks rattles, and they scream like Banshees while going down the road. I have rebuilt units ready to install soon as I clear some space in the garage.

otto wrote: I’ve entertained the AA kit in the past but couldn’t find anyone to machine the gear. How did you accomplish it?

Most any local machine shop would be able to machine the gear. Jpet was able to machine mine.

That looks a lot like the "heat blue" once used on Colt revolvers 

AKoller wrote: DAAN wrote: Nice project and neat install of the locker. What half shafts are you using in the rear axle? I'm running the offset flanged D44. I'm using the stock shafts that came in that rear end. They came with 30 spline shafts.

Nice project and neat install of the locker. What half shafts are you using in the rear axle?

Hey Al,

Time for a quick update. I got the Yukon ZIP locker installed well before EJS. While out in Utah at EJS I found that I really liked the air locker for the most part. I really liked being able to run "open/open" with both the front and rear and only actuating the lockers when needed. I like how quickly it locks in. It engages almost immediately compared to my E locker I have in the front. I will likely install another air locker in the front end later this year.

I did however have one issue with it while I was there. The morning we ran Mashed Potatoes I started hearing the compressor cycling about every minute. The locker still seemed to work as it should. When we got back to camp we found that the MAC valve was bleeding off air out of the vent. I disassembled the valve and didn't find a thing wrong with it. I put it back together and it worked perfect the rest of the week. I'm sure a small piece of debris was probably stuck in there not allowing the valve to seat all the way.

Rick G wrote: Nice job, Alan.  Take lots of pictures of your air locker install.  I’m not familiar with the Yukon air locker, but I’m assuming it’s a lot like the ARB with internal airline & seals?

From what I understand is ARB's patent on their original design that they produced for many years ran out and the Yukon is basically a copy of it. Hopefully it is as durable as the ARB units. Time will tell on that I guess. But since I run NDT's I will never have enough traction to break anything.