Potential ARB Locker Problems for a DD?

[Seattle206]

I spoke with Auburn 4x4 here in Washington and they have good reviews on Yelp and on the local 4Runner FB group. They can get me RD193 for $891 and will do the install for $500.00.

I won't be doing a re-gear as I will just continue to run with my 285/70/17. I was thinking about ordering the ARB twin CKMTA12 but realistically, the rear locker will be seldom engaged and at most the I'll be using the compressor for airing my tires back up. I think ARB CKMA12 will suffice with the occasional locker engagement.

Will there be any other parts that I need for this job? I'll provide the parts to the shop if I can beat their prices.

 

[JSparky]

I currently have an air leak somewhere in my rear diff . So when I hit my rear ARB locker the little compressor keeps cycling on and off about every five seconds . FWIW the ARB continues to lock up the rear , no problems despite the air leak .

I mention this to illustrate how durable and tough the ARB is , that even when it's obviously in need of a repair , it still locks and unlocks properly ... and yes the fix is on my to-do list.

Was reading through this and thought I might mention that, as far as I know, the TJM Pro Locker uses an improved design that eliminates the potential for this to happen. I'm sure someone else here knows more about this so don't quote me on it, but from the people I've spoken with the TJM unit is superior. To the OP perhaps ask the vendor your're working with about this.

 

[Seattle206]

Called ARB USA here in Renton, Washington and they referred me to one of their guys who routinely builds the diffs for their Toyota fleet vehicles. Called the guy up and he's been working with ARB for years and knows yota diffs like second nature. Excited to get this done!

Have my ARB compressor so I'm gonna mount it, hook up the wires and switches then route the air line before the locker install.

 

[RonJR]

It's actually not that hard to do the carrier installation if you do some reading, buy a dial indicator, and take your time. The Toyota rears are pretty easy to work on, since the whole works comes out and you can do all the critical stuff on the bench.

The pinion depth is the tricky/fussy part of a Toyota rear setup, and you won't need to touch that unless you're regearing at the same time. All you really need to set is the backlash, and the Toyota rear diff has adjustment wheels instead of shims, so you just install the carrier onto the ring gear, mount it in the 3rd member, get out the dial indicator, and adjust the wheels until the backlash is right. Then put some gear paint on, check the pattern through a couple of turns, double check all the bolt torques, and button it up.

I put the True-trac in my '94 40,000 miles ago. That was like doing an ARB, except for the plumbing. Runs smooth and quiet as can be.

Check this site Toyota Gear Installs for some great pictures and how-to descriptions.