Frank McElroy Posted December 15, 2022 Share Posted December 15, 2022 In my case, the pump mounting bracket broke due to metal fatigue. Prior to the 2008 model year, Monaco got so many complaints about the pump located above the rear drive axle waking folks up at night that they "solved" the problem by mounting the pump on the front steer axle H frame. WHAT WERE THEY THINKING!!! In my case, when I discovered in a pre-trip inspection that the pump was hanging by the air lines at 60,000 miles, I removed it with plans to mount it in a protected area on the front fire wall. But that was 5 years ago. My coach still stays level for months when parked, so the project to remount the pump is still near the bottom of my upgrade to-do list. The list form the domestic engineer somehow has higher priorities than remounting the aux air compressor pump that we actually don't need to use. Our practice since purchasing the coach new has been to park, level and shut off the PowerGear auto leveling system. Today, it still stays level with the PowerGear system off so that's why relocating the pump sits near the bottom of my to-do list. Link to comment Share on other sites More sharing options...
Bobbyboy Posted December 15, 2022 Author Share Posted December 15, 2022 THanks Frank. That is it. I saw "yellow markings on mine but everything was painted over. Now, quick question: My air intake filter bracket was broken off and the air intake hole was blocked with dirt (mud daubers I suspect). I took the pump apart, cleaned it and ran it. It seemed ok so I put it back on and connected the air hoses. I have a new pressure switch. However, the pump runs continuously without shutting off and I am wondering if maybe it just isn't putting out the pressure it should. And I started the bus and filled all the tanks before I tried it. I assume the aux tank fills also when the main engine compressors runs. Any thoughts before I spend the $$$ to get a new pump. Thanks again, and Merry Christmas to you and Family. Bob L, 08 dynasty Link to comment Share on other sites More sharing options...
Frank McElroy Posted December 15, 2022 Share Posted December 15, 2022 Likely you have a problem with dirt in the compressor head blocking the internal valving. See if the compressor can build pressure by disconnecting the outlet air line. There is a check valve at the tank so the tank will hold air pressure with the compressor line disconnected. Link to comment Share on other sites More sharing options...
Bobbyboy Posted December 16, 2022 Author Share Posted December 16, 2022 Thanks will give it a try Bob L, 08 dynasty Link to comment Share on other sites More sharing options...
Michael Powell Posted December 16, 2022 Share Posted December 16, 2022 1 hour ago, Bobbyboy said: Thanks will give it a try Bob L, 08 dynasty Link to comment Share on other sites More sharing options...
Michael Powell Posted December 16, 2022 Share Posted December 16, 2022 21 hours ago, Frank McElroy said: Likely you have a problem with dirt in the compressor head blocking the internal valving. See if the compressor can build pressure by disconnecting the outlet air line. There is a check valve at the tank so the tank will hold air pressure with the compressor line disconnected. this is what I did... This is what I did you may contact me if you wish.. mpowell@powellwatson.com 2 minutes ago, Michael Powell said: this is what I did... This is what I did you may contact me if you wish.. mpowell@powellwatson.com Link to comment Share on other sites More sharing options...
Bobbyboy Posted December 16, 2022 Author Share Posted December 16, 2022 Mike: Beautiful job. What brand of pressure pump?? Bob L. 08 dynasty Link to comment Share on other sites More sharing options...
Michael Powell Posted December 17, 2022 Share Posted December 17, 2022 11 hours ago, Bobbyboy said: Mike: Beautiful job. What brand of pressure pump?? Bob L. 08 dynasty Viair and ybelieve it's a 450 C I have used it for 4yrs no problem. You may contact meat mpowell@powellwatson.com Link to comment Share on other sites More sharing options...
Raymond Posted December 17, 2022 Share Posted December 17, 2022 Viair 250C-IG 12 Volt Air Compressor with Thermal Overload Protector Ray W 2008 Dynasty Link to comment Share on other sites More sharing options...
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