L.F. came to town because they didn't believe the lifts were overheating, now he believes and they term the application as severe. We know it was a tough application, but other OEM's run without overheating. Everyone has a weak feature or two, we just can't seem to get away from the overheating, which leads to other failures. We go through this every time they introduce a new model, if you know the past, you can predict the future.
The first step is to remove the (Sales Pitch) lint screen, once the lint screen is removed from the radiator shroud, it leaves an opening, I pop rib-it a strip of rubber over that opening. May seem to be a small opening, but remember it is always the little things we overlook.
This is the closest thing to a Technician forum I have found, the factory will not share info, success or failure. They cure cancer with toe nail clipper's, no matter what the symptom's or known cause, they are going to clip your toe nails first.

Just what we have done so far as per PSB c304-038.Seem to me i have read about shroud mods but I cant find any thing so far.Header wrap seems like a good idea.Will try this next time.Near Nashville here might have to pick your brain someday Thanks

I am also known as Mempfoman on other msg boards. I am not a fan of increasing the pulley speed on these the new trucks, it creates a vacuum effect and plugs the radiator. We look for a temperature drop of 25 degrees cross the radiator and then we make modifications. We try to keep the heat from recirculating around the radiator.

They also have a diffrent fan and pulley setup for this truck.Lets the water pump turn faster.Cowboys where in tenn are you?

This problem has been around for many years, OEM has made some changes, but the main problem is the shrouding around the radiator.
(1) They suggest using a bushing for the ECU Temperature sending unit? It moves the pick up away from the coolant.
(2) Before reinstalling the OEM radiator, fabricate shrouds for left, right and the bottom of the radiator. Use the OEM shroud, but remove the lint screen and seal that opening.
(3) Wrap from the exhaust manifold to the catalytic converter, using Header Tape. Not-OEM
(4) 50/50 coolant mix, water or additives will not work.
Not recommended by the factory, but I use this test to create a benchmark.
Run the lift until you reach operating temperature. Timed test.
Hold the accelerator on the floor board and operate the hydraulics, until you get the code E32. Most trucks will code out within five to seven minutes. Make the above modifications and retest, it should improve by twenty minutes, which will solve you problem.
In severe applications (Cotton) you may need a transmission cooler, it is always a good choice, but not a substitute for the above modifications.

luis,
when you say overheating do you mean physically overheating?
or just the overheat Exx code displayed on the dash display?
Yes these trucks have had issues with overheating codes and were related to fans, incorrect sized pullys and also ECM/VCM related electrical issues. Bad sensors.

Let me get into my technical service bulletins and see if i can find some of the common problems we've had here with this truck.

Oh BTW i work for the CAT dealership here in charlotte, nc in the united states. :o)

I'll be back in touch.

Laterz,