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Get a buddy to help, it's awkward. I did mine in one shot, not two sections, so it might be easier to do in pieces. The bolts behind the drivers seats are a PITA. Don't torque the front holders, they aren't meant to pull, they'll just bend. Carefully seat the weatherstripping before you...

I bet you'll be helpful, stay tuned to this or the new thread (which I'm not sure will happen, unless I get a little better with my docs, which I NEED to do). Thanks!

I may take you up on that. I hope that we can find the common thread between all ECU's, although I bet there will be an oddball one. I am not sure we want to modify the ECU's. Once we find out the wiring, I want to head down the direction 74M35A2 was going with a harness, and then we can route...

The ports are all mapped out in the DANA CTIS "TM". The orange circle is what I wired today, both J1708 and J1939. The red arrow is pretty much what we are not happy with. The wiring harness on the truck side didn't have any of the diagnostic ports wired, so we are doing it. You can see...

OK, I soldered up the 1708 and 1939 connections to wires. Now I need to figure out which protocol and then see what data it gives. The unknown here is that I used a CTIS controller that I didn't check on the truck. This was the one I took apart before. Let's hope that it still works!

I wrestled the last axle drain plug free with some heat and some good contortions and luckily didn't strip the already stripped out drain plug. Drained and refilled, and put in a new plug. Since I had the gear oil, decided to drain the transfer case too. The inspection plug had some sealant on...

OK. So a quick update as I did not do a separate thread. This will be short. I think I will cheat to get the protocol feed by jacking the ECU from the inside through that pin header. I'll see if it's going to be awful. I did figure out how I am going to display it though. Check this out...

Ok, it looks like it's definitely a removal to see what's wrong (after the brake check test) and most likely a rebuild in my future. I see Jason had a GREAT thread on the M105, which the M103A3 is similar and the TM doesn't specify anything that isn't the same (except for the M105A2C, which had...

A pict for those needing the visual. It doesn't seem that the air brake canister is serviceable, but the "boot", item 16 could be something that is causing the leak? And my airbrake canister looks a bit different, it has the clamp on it.

Thanks Jason, I do know about the two, but I'll do a more thorough inspection, but is it possible for the oil to come back to the air chamber from a "broken" gasket in the air chamber and leak? It looked pretty tight. Is there a seal where the two meet that might be broken? If this thing...

bump for the smart peeps.

OK, truck 2, therooster 0. I got the speedouts and some propane (had it at home, but not at shop). I neglected to get a striker, so no heat. Didn't try the speed outs yet, they are a last resort. GRRR.. And I might take the 24v hookup off thread, as it's getting a lot of attention. Do...

Don't want to hijack this thread that bad, but 24v. Easy..

Wrestled unsuccessfully with a differential drain plug, I'll have to use some heat. I still have a bit of meat that I am clinging to. ALL others were super easy. I have my replacement waiting so I can throw this as hard as I can into the garbage. I'll get it. Painted a star back on the...

OK, I've poured through the TM on this one. This is a M103A3, with an MKT sitting on top. The hand brakes do work to stop the trailer, but I have noticed some fluid only when the brakes are applied. Since I have not had soldier B to help, I have not been able to pump the brakes and notice...

With a lot of talk lately on axles, I thought I'd take a look, and since I hadn't serviced them since I bought the truck, it was time, well past time. First fill plug, I got a little air (on second thought it might have been a little vacuum, so letting air in, not out) then oil poured out...

I have had this problem since I replaced my hard top. It's stuck closed, and really good. I've put some pressure on it, but don't want to bend the window, or having it shatter. I'm pretty sure it's CARC that is holding it together, but there is no other mechanical means that hold these...

That seal installer is pretty awesome, great ingenuity. I think you just created a new tool.

I use the originals, on top of Group 31's, some people just mentioned they use 1/4 rubber mat to cover the whole thing...

Nice troubleshooting! My old ECU didn't need the service lights on, my new one does. You must have had the old one. So your relay was a four pin, not 5? Think someone just put the wrong type back in?