Onan 5500 Housing Insulation
I have a 2008 Onan 5500 HGJAB Spec D. I noticed almost all of the OEM insulation is missing from the inside of the housing. There is a small pieces when looking gat the generator from the front on the right side, or on the exhaust side. Isn't there supposed to be insulation throughout the inside, and if so, does it help with cooling, meaning does it deflect or anything, or just to quiet it down? I'm having an overheating issue when temp is 90 degree plus. I just installed a new fuel pump and filter, insulated all of the fuel lines from the frame to the pump, and the lines inside the housing, I also installed the OEM Onan carb insulator. I rerouted my exhaust tubing to get it from directly underneath the fuel pump to the opposite side. I also installed an Onan intake duct that was built for Jayco that allows the incoming air to be pulled from the side of the RV, versus underneath to help with separating the incoming cool air and the exhausted hot air. Next on the list is a pusher pump to be installed towards the rear of the RV, near the engine fuel tank, and build a better intake plenum. Note, my generator is located behind the front driver side front wheel. The fault code was 36, now its throwing a 47, which I've read can be associated to running out of fuel, from Vapor lock.