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Would you agree that a TXV works much better than an AXV? There is a plug on the bottom of the block opposite the control diaphragm. Air out should be at least as low as 40° and maybe as low as 30° in my view. My car is 41° my M35 was 28°, all with 134A

No it is not. Well maybe it is but adjusting it made the low side lower psi.

OK, found 3 things. There is a baffle so all the air does go through the evaporator coil. The A/C only works on recirculate. It does NOT use a TXV, it is an AXV. I think this was a very bad decision since with a high heat load it will actually cool less.

That is why you test it before installing.

I did a 3060P but that is almost exactly the same. It was completely worn out. Cost about $2k and then $800 for allison to test it.

Exactly. Now I am not yet positive of this but will know tomorrow. What do you think about relocating the TXV bulb to trick it into opening more? I would know if it works by the low side pressure.

I rebuilt one a few years ago, not hard to do at all, but expensive. Just get a good take out.

If you have a fork lift it is not so bad. Without one I would think it will be rather hard to do.

Why not just fix the problems? Once you understand the system it is not as complicated as it seems.

I started taking the case apart in the truck and the first thing I found was 34° at the header feeding the coil. And it looks like they allowed a huge amount of air to just go around the coil on the ends. I have 30 of these units so tomorrow I am going to take another apart to see how it was...

Yes it seems like it must be restricted. I suppose I could just take the lines off under the cab and do it there since the cab temp is at least 100°!! Maybe I could catch something coming out the inlet.

Inlet to condenser is very hot, outlet is almost at ambient temp so condenser is doing a great job, it is a very large condenser. 968 square inches. Air from evap is same temp regardless of engine rpm. I feel like the expansion valve is restricting the flow to much but everything is new.

Nope, that's not it. Same temp readings as 4 lb charge and 5 lbs. Pressure was too high at 275 and 45 so I went down to 4 lbs and high side is 200 but low side is 25, way to low for 134. Still blows 65° at 82° ambient. New gen 2 unit has been sitting for years.

or start it every 30 miles to lube the trans.

OK, new A/C install with gen2 evaporator, high side 225, low side 25, what should air from evap be? I barely get 65°. R134A

I sell the lens, you take your display apart and replace the lens

do not over complicate this. allison says you can flat tow it for 30 miles at 30 mph. I am sure they left plenty of room in this. also with no pressure how can any clutch engage?

no it is a planetary differential, always active

The 6x6 center diff is precarious even on a big transmission jack. the shape just does not lend itself to sitting on anything.

there must be thousands of these trucks scrapped!! my lens kit is plastic.