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How many miles are on the truck again? These turbos have finite lifespans. @coalminer is one of a few to successfully swap a VNT without calibration issues.

It's not that bad unless you break some bolts.

Completely hose the engine down with cleaner, get a good flashlight, run the engine and look. I tend to use 3-4 cans of brake cleaner while doing this.

If yours is the single nut type, then do not torque to these values. It's snugged then backed off. It still sounds like yours are a bit loose.

These torques are too high, refer to the TSB i posted earlier.

Loose wheel bearings and excessive endplay are very often the cause of air gap codes. The hub/rotor are moving enough to push the wheel speed sensors out an excessive distance. This is the style of dial indicator I use for checking wheel bearings. A simple one on a magnetic base. I keep...

The old school way to do it is to tighten the inner nut to 100 ft lbs, then back it off 1/3rd of a turn, then tighten the lock nut. This gets you pretty close, but when the target is a couple thousandths of an inch, im only comfortable by confirming that with a dial indicator on a magnetic...

It's extremely important that some endplay is verified after the locknut is tightened. Tightening it reduces endplay.

That looks exactly the same. What's the suffix of your engine model (J08E- TC, TV, TA?), and the horsepower rating?

Or you can unload right on top of the transmission. Better yet, hit the driveshaft and sling it everywhere. Luckily this is a lot less common than it used to be.

Here's part of the picture.

Fingernails: permanently dirty.

I'd be speaking in tongues too if a steel bar pierced the bottom of the car and pegged me right in the butt.

I remain unconvinced.

This pretty much hits the nail on the head. Regular maintenance on the 2000 series Allison is so simple, it's ridiculous to ignore. The 3000 series is slightly more involved because it requires a ratchet and socket.

That doesn't mean the bearing adjustment is correct. No. It doesn't really matter what brand of seal you use, IMO. Endplay is measured with the brake pads pushed off of the rotor, the drive axle out (if checking the rear), and a dial indicator measuring in and out movement. Up front you're...