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Yep the fronts are park lights, not running lights. The only thing connected to pin L on the switch are the two front park lights via CB65. The only time you get power out of pin L is when the upper lever is in service drive, and the lower left lever is set to park. in service drive, the...

The reason I ask? Well CTIS is a slave to the wet tank pressure switch, and that switch interacts with the protection valve setting. There are two types of switches but the only difference is slightly different pressure settings. Basically the switch closes above 117PSI, informing CTIS that...

Are u using the original ctis?

Yea i think what general said is normal ops, will look at the drawing when i get home...

I think you are going to find the performance about the same unless you are VERY VERY heavy… My calculated numbers for my 3116 truck at a target weight of 20,000LB, I should be able to start out on 41.3 degrees of slope in 1st and 22.5 degrees in 2nd. IF I don’t run out of traction first...

Only if you are needing to use all that torque, but you hit the high point, EGT will always be a factor of load. Torque drops off drastically above pk torque RPM, winding up ~1/2 of peak(or less?) at 2600RPM. We are performing a certain amount of work rolling down the road at highway speed...

They were on the side of the front hubgear covers and are hard to see unless the wheel is rolled with them on top. His current eco hub has a filler hole, the first product run filled thru any mounting hole, but the same 4Oclock procedure applies as it did on the original hub...

Yup... remove center cap, pull axle, replace center cap...

The hub is all the way at the end of the axle outboard of the wheel bearings under the center domed cap. It halvs the drive axle rpm and applies that to the hub/wheel(2:1). Yes, highspeed is not their friend... Yes they generate heat. The eco hub removes the entire hub planetary and couples...

Yes the towing process is still the same, as that process(pull rear axles and lift front, or pull both driveshafts) is to protect the transfer case. This is the same for any AWD vehicle. Flat towing may be a little more forgiving now as we have halved the axle and DS RPM for any given road speed…

Well thats just the point, this mod removes/takes the planetary gears in the hubs out of the equation… in doing that it also cuts axle, differential driveshaft and transfer case RPM in half, and drops the engine to near peak torque RPM(or less) at highway speed…

What General said… the programming is based on the flow thru the engine provided by known components. You alter that flow by changing parts, the programming has no way of knowing this(no mass airflow, no O2 or even EGT feedback. kinda reminds me of hacking early toyota EFI…

Finally got an answer back from an Allison service center rep. He had trouble accessing info,as the Allison system was down for a bit, and was pretty busy, but he didn’t forget about me And ran the info down. It does appear that the latest composite thrust washer P/N 29545936. Does supersede...

Yea the 3 engines are a little different. Peak Torque on the 3126 is 1450RPM, on the 3116 it is 1550RPM. i didn’t think the C7 was so low… They all share one thing in common though, they all drop off drastically in available torque as you approach 2600 RPM…

I worked up this information for a FB discussion and thought I would share it here: Several have reported pulling hills at highway speed better with the new hubs. This actually falls in line with published information. You start running the RPM past peak torque, the available torque falls off...

The relay I was discussing provides power to ctis when de-energized, so it needs to stay or pull it and jumper pin 30-87A. Pullung CB66 will disable its function though...

Well you saw them blackout… The fact they blacked out all by themselves for you indicates to me a bad lights witch…

It should still blackout. Its not as much about night vision as it is about light discipline(You look at that display with NVGs on and they will probably bloom out:)) I think I got my brain around how the circuit is supposed to work. When you select blackout on the light controller it sends...

I cannot remember if it applies or removes power to dim the display. On the A1 K29(blackout relay)controls this using the de-energized contacts. CB66 provides power from the light sw to energize the relay. So with things turned on and the trans and CTIS visible, what happens to those displays...

Since everything was still working, it does sound like the dimmer/blackout circuit went wonky…