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Monitoring lockup state in Allison DOC should clear this up. There are many options both in DOC and even more available to Allison engineering in the base program they load for the specific application. I'm sure they can make it function however they want as long as they can unlock it fast...

The military likes them because they don't leak and are MUCH less affected by low temperature. They can also suffer minor damage and continue to function (think a crack in the case, etc). A wet cell will leak out the acid if cracked and cease to function (no electrolyte = DEAD) while an Absorbed...

They are pretty much all $600+ these days. There's essentially Odyssey (Enersys, Hawker, etc), Optima, and some others like Full Throttle (China). But pretty much all of them are in that same price range.

Yeah I observed mine again and it stayed engaged till about 10 mph. The speedo doesn't respond fast enough if you are stopping quickly.

Hhhhmmm. I'm in Portland, OR and the weather here rarely touches the ether temp on my truck. Typically I am waiting for the intake heater light to go out. This was a 17F ether start last winter. You can see that the intake heater light is out before I crank it and I got the black ether smoke...

You're images don't function. Try using the forum on a PC maybe instead of a phone? Just guessing.

Initially. Followed shortly by losing the whole truck...... It's like tripping on your shoelaces that have come untied and falling...... into a pond full of gators and syringes.

Ether is used below about 20F actually. You can tell when it's activated because the grid heater will NOT turn on (don't want to blow the intake off the engine) when the ECM selects ether. Once the engine fires the grid heater comes back into play to warm up the engine. The C7 will typically...

Tighten the nut on the motor for the linkage arm when the wipers fail to park in the horizontal orientation. Same issue occurs at the motor shaft and they like to work loose.

You can see the exhaust brake lamp on my annunciator panel and the current gear to the right on my trans display. This is coming to a stop from around 40 mph. https://drive.google.com/file/d/19YhMYarWcI0e946XOjjxvow8DVGer7bL/view?usp=drivesdk

You sure it's oil and not fuel? Injectors have seals for oil, coolant, and fuel in the head. So could be injector cup seals. And yeah the head gasket also seals coolant and engine oil so I suppose it's possible that it could be a faulty head gasket installation. I would pull the injectors and...

I'll take a video of coming to a stop in my truck. Yes the exhaust brake disengages when you hit 2nd gear because the converter unlocks so the exhaust brake has no effect. But it still works normally and down to about 15-20 mph. You get used to it quickly and it's a non issue. Coming down steep...

Definitely. Have a large assortment of bearing races, pipe and pipe caps, assorted round chunks of odd bits and pieces - in a bucket under the press. Sockets (impact sockets typically) stand in often for pressing duties as well.

Delrin makes great drivers and machines beautifully. Expensive though. Making drivers on the old lathe takes time and I'll have the job done before the driver is made. Great if you need to hand the driver off to a lowest common denominator (grunt) to use the tooling repetitively with his brain...

Oh yeah. I've bought a whole lot of tools for the big truck. Not a stranger to seal drivers - have used plenty and had to make a few over the years but have not bothered in a lot more years..... you learn techniques to get the job done without some of those special tools "training wheels"...

Seal drivers aren't typically necessary. Honestly can't recall the last time I used one.... or had a leaking seal (that I installed). Usual weapons of choice - screwdrivers, punches, and socket extensions. Steady hand and an eagle eye. But to each their own as long as the job gets done with good...

Yes. The 3.07's are kinda falling down the backside of the ideal gear ratio curve but it's still a win. Ask @ckouba about his truck. It's an MTV ( M1088 ) chassis with a HUGE enclosure and it came to him with 3.07's. He loves the ECO hubs and has had zero issues off road with them. He has...

Here's the top feed unit on my 2008 (vs. center feed - what the military calls them): There's no notes in the TM on the start serial number. I think it was around 2006 or 2007 that these were introduced. It was later than the 100,001 start of the A1R serial numbers. Obviously all the A1P2's...

Well - there are plenty of parts trucks out there and more arriving in the market every day. LOTS of these trucks still going through DLA. Many of them now with the 4x4 high-pinion rear axle which would be a better choice all around even if you stick with the 3.07's because it addresses at least...

Well that was a given. Along with the skulls of my enemies.