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Simple shape, someone with a 3d printer could probably crank one out pretty quickly…

Ok, thats an A0. first check I would do is measure the voltage at the test points on the left side of the power panel. You have a ground(X3) 12V(X2) and 24V(X1) test points and you should see battery voltage measured on X1 and X2 to X3 test points, minus about 1/2 volt as it passes thru diodes...

Yea I did a utube video on this also. I think the biggest issue on these is trapped air. Once it is compressed in the cylinder it acts like a spring and any air in the line or a leaking valve will allow that air to force fluid out fast enough to lock the ball. I think the key to releasing...

First off, what year and model truck is this? Does master stop mean main ignition switch above the start button? The park brake, and the whole brake system does not require electricity. What it does require is air pressure. If the park control wont pull up, it is probably because it is...

The LBCD has their bandaid for matching 240AH of batteries to a 100A(combined output) alternator. It performs 3 functions. 1. It has diodes for reverse polarity protection between the batt and load terminals, so current can only flow one way to the power panel. 2. It has a sensor circuit that...

Well it sounds like something is mis-wired or crossed over somewhere. In order to feed 24 back onto the 12v side you would have to basically short the 12-24v battery and thats not going to work… the switch under the dash controlls the remote disconnect. It shouldnt cause any issues as it is...

If you are running 15W40? Is it cold there? I could see it shifting a little rougher when cold. Have you forced the trans to relearn the shift points? If this was an A0 I would suggest you check the trans throttle position sensor on top of the engine, as that can cause harsh shifting. But...

On the A1 24v battery is p115 pins 15 and 16. The wire numbers are both 136. it comes from CB43. And you pretty much have to have it available and the Allison TCU uses battery power as the source for its + output control signals like the one used to power the Neutral start relay K26. If it...

Then yours should be 24V. I can look at the diag in a few hours to confirm wiring...

On the A0 they feed 12v via the VIM to supply the battery voltage to the TCM. I believe that comes from CB22. They supply 24v ign to the TCM via CB79. I will have to look at a diagram this evening to be sure about wire numbers. They feed 24v battery and ign to the TCM on the A1... What truck...

Well it says that governor should cut-in at 105PSI… CTIS can easily consume all the air the compressor can put out. Another possibility is the the CTIS switch is not resetting properly at the low point of 89 PSI, so CTIS continues to fill and is consuming all the air. When you drop the wet...

You have a couple things interacting here. CTIS cycles based on the pressure sw between ~117-89 PSI. The air fed to CTIS from the wet tank passes thru the air brake protection valve. This wont let any air out unless the tank pressure is above ~85 PSI(Saves at least 85PSI for the brake system...

if it is programmed higher, it will run 50% higher than whatever it is programmed for. Sounds like his is not programmed higher, which is the issue. 62PSI sounds like an odd pressure so @RRaulston you need to keep a close eye on what pressure it does go to when you fill the first time On the...

Well you can swap out the 0-100PSI PCU pressure transducer with a 0-150PSI unit(about $10) and that will fool the controller into about a 50% increase in pressure above the normal programmed levels. Thats around 82PSI in highway mode which is a much better range for the tires…

FYI, no bump stops in the chassis-tech bags, mine were delivered today…:)

They don’t have a duckbill, just a plastic snap-on output horn/elbow. If one is making a different noise, there may be something in the horn or the valve core/sliding valve that is effecting airflow when it is in dump mode.

I believe Superman can reprogram them. The dump valves are noisy, kind of a higher pitched woosh as they dump air. Do they all sound the same? The front axle valve is on the passenger side of the transmission inside the frame rail, the rear axle valves are back over the axles. Yes it dumps...

Its in the manual, item number 6 in this screenshot located under the screw on cover (#3)…

Ok, for the dryer purge valve, another possibility as it is triggered by air sent from the governor when it unloads the compressor. If the governor is leaking air down that line it could be forcing that purge valve to leak. You can disconnect that 1/4” airline from the bottom of the dryer and...

If you are just using shop air to charge the tanks before start, you are probably not introducing much moisture. The giveaway would be if you get any moisture out of the tank drains. If you are not getting any moisture out the tank drains then you are probably not admitting enough moisture to...