On most of the ones I have seen the actuator is on or very near the plenums as they are a more or less stand alone modular part and sort of a drop in piece. They add more holes to the systems and increase the sizes of the case based on the BTUs the unit is capable of but try to keep it as a single component. One of those cheap USB inspection camers you can use with a phone or tablet might be helpful as you could look around the various parts rather than taking it all apart.
The vacuum source will be on the intake manifold but none of the OEM diagrams would make much difference because RVs only use the rolling chassis, dash and steering columns for the most part. Everything else is a custom item.
What is the brand and model of the RV, there could be a source for the information online.
Thursday, July 23rd, 2020 AT 10:58 AM