I will ask about the timing belt history of this particular engine and it’s serviceability. I can answer to the heat shields that you have observed. They are there for what is being coined “ CHDS (Cabin Heat Discharge System) — a revolutionary heat management system that improves operator comfort and helps protect sensitive components.” The shielding you see is channeling the fan air flow (with plastic ducting directing the flow from the fan ) to the engine heat shielding that you can see. All of the exhaust (blower, engine and fan directed cold air is exhausted behind the the truck mount on the driver side and elbows away from the fuel tank area. The kohler rep that was testing the temperatures of the air cooled systems that we are developing had to visit the testing facility two times to verify that a concealed unit was really producing such low temperature readings. That Kohler rep now works for Aero Tech as our outside sales manager and will be driving the demo van across the country hopefully to a town near you.
Also the diverter valve system for these units have been knocked out of the park. I personally have been involved with the evolution of this system over the past year and a half. It is awesome I will have to share pictures. All heating sources are turned off when the temperature reaches its set point. The exhaust from the blower and engine are completely diverted (just like the XT and
DDS) plus the coolant exchanger’s hot coolant flow is haulted. No matter if you are chatting with Misses Jones for 45 minutes between a few upholstery cleaning strokes or dual wanding full trigger the system will always be fighting to maintain temperature.
The water pressure also only circulates the cold water . It doesn’t circulate the hot water through a water box and dump to the recovery tank. Both the Liquid cooled systems and air cooled systems are designed this way.
Everyone involved on this project has a lot of faith in the research and testing of the PSI. I will have to share all the hours of straight months of testing these units have been put through, the temperature conditions, and monitoring systems and procedures. They hired temp employees to sit and play video games and monitor the the system and report the readings every 30 minutes and insure the units never shut down 24/7 for months while running vacuum loads and water pressure on and off mimicking of wand cleaning. The temperature probe’s were being monitored all over the place. It was some really cool impressive testing .
The secondary bearing housing to insure the engine shaft doesn’t experience any side load is brilliantly over built.
All service fluids have been located in the same area for ease of maintenance. The digital display also tracks, monitors and alerts all service intervals and will make you have to push the overide to continue. The computer will save all its memory even if the system loses power from the battery. If there are any updates Aero Tech can email the updates and you can download it on a flash drive and upload it to the system within minutes your software can be updated .
Plus it’s really good looking like Mike. Who wants to be like Mike?