bukzin......Most Diesel Pushers use a set up where the Charge Air Cooler (CAC) is sandwiched together with the radiator. The CAC is typically right behind the engine, closest to the engine fan. The radiator is a couple of inches behind that. From the rear engine doors, you typically see the radiator.
The good news is that Monaco built a much more efficient system. They stack the CAC on top of the radiator. When you open your rear engine doors, you'll see one on top of the other. This allows for better air flow and MUCH easier cleaning.
Cleaning......You should have two access covers in your bedroom (some coaches are different). On mine, you can see both hatches and the latches to release them. On yours, you can probably see one, but the one farthest back and the one you need to access may be difficult to distinguish where it's at and to find the screws holding it closed. You might have to look under the coach at the area above the engine fan to see the outline of the access cover.
Once this cover is removed, take a garden sprayer, pour a bottle of Dawn dish soap in it and the rest water. From inside the coach, spray the entire CAC and radiator assembly.
While you're in there, take a flashlight and look down into the corners of the larger metal fan shroud. Often, debris like leaves and paper will collect down in the bottom corners of the fan shroud. Remember, your engine is like a large vacumn, it's suck air form under the engine and pumps it out through the CAC and radiator toward the rear of the coach. I use one of those pinchers where you push the button and the three prongs come out to reach in and grab any debris
Once you've thoroughly sprayed the CAC and radiator, go ahead and close up the engine compartment. You're done inside.
You may get wet, but I use a sprayer wand on a garden hose. From the passenger side of the coach, I lay on the ground and spray/rinse the CAC/Radiator off on the side where I sprayed it. You'll see some dirt in the runoff. Once it runs clean, I start the engine and spray the area again. Now the engine fan is blowing the water through the CAC/Radiator.
You're done! It sounds more complicated than it is. The Monaco design never gets as dirty as the other brands and doesn't require cleaning as often.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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