mikecollie Report post Posted February 9, 2019 My coach has the 3 point jacks and I cut off engine and turn to acc to let the air out and yes all the air will leak out eventually.It has not always made this noise.If I do not use the acc and leave the switch on my buzzer will go off once the air gets below 90 psi. Share this post Link to post Share on other sites
rayin Report post Posted February 10, 2019 13 hours ago, hermanmullins said: Richard, I may be wrong but when dumping the Airbags it doesn't dump the tanks, just the Airbags. The pressure in my tanks stays full. 2002 Monaco Dynasty on a Roadmaster Chassis. Herman Works the same for my Spartan chassis air system. I really doubt it's the air system, but rather the steel rear suspension components. Here is the Holland rear suspension, it's clear how metal to metal contact may occur when dumping air pressure from the bag. Share this post Link to post Share on other sites
mikecollie Report post Posted February 20, 2019 Update,I was able to determine the noise was coming from the front suspension where the eight bolts that connect the suspension to the coach body.After lubricating the bolts several times everything is now smooth and quiet.Thanks to everyone for comments and suggestions I really appreciate the help.This was one of the main reasons I joined FMCA. Share this post Link to post Share on other sites
f433921 Report post Posted February 20, 2019 Glad you found your problem, thanks for letting us know what the problem was and your solution. Jim Share this post Link to post Share on other sites
wildebill308 Report post Posted February 20, 2019 Glad you fixed your problem. Bill Share this post Link to post Share on other sites
wolfe10 Report post Posted February 20, 2019 13 hours ago, mikecollie said: Update,I was able to determine the noise was coming from the front suspension where the eight bolts that connect the suspension to the coach body.After lubricating the bolts several times everything is now smooth and quiet.Thanks to everyone for comments and suggestions I really appreciate the help.This was one of the main reasons I joined FMCA. Mike, In most cases, bolts holding metal to metal (suspension to body) are torqued so that there is no movement-- so lubricating does not address the root cause of the noise. Exactly what bolts (holding what to what) are they-- want to make sure you are safe to drive. Share this post Link to post Share on other sites
mikecollie Report post Posted February 20, 2019 Wolfe10 thank you for your concern.I sprayed the bolts that go through the bushings that hold the suspension to the coach.I sprayed between the metal and the bushing with a silicone spray that said it would not harm rubber or plastic.I hope I am describing this correctly so you will know what and where I am talking about.The bushings looked good the best I could tell but just dry. Share this post Link to post Share on other sites
wolfe10 Report post Posted February 20, 2019 Sounds like the SWAY BAR end link bushings. There are 8 total bushings-- 4 on each side. If worn, the sway bar does little to control sway. Pretty easy to replace, and polyurethane bushings are far superior to rubber. Share this post Link to post Share on other sites
mikecollie Report post Posted February 20, 2019 Thanks for the reply,yes that sounds correct for what I did.There were eight bushings that went from front to back plus two more from side to side.I have not noticed any excess sway but i will check that again when I get a chance to road test. Share this post Link to post Share on other sites
jleamont Report post Posted February 20, 2019 Mike, can you snap a photo of the bolts in question and post it? A picture back far enough to see the suspension arm or component in question. Share this post Link to post Share on other sites
wolfe10 Report post Posted February 20, 2019 Front to back would not be sway bar end links-- they are vertical. Likely trailing arm bushings, but as suggested, a picture will tell the story. Please verify if you have the 4 inboard or 8 outboard Roadmaster suspension as they are very different. Share this post Link to post Share on other sites
mikecollie Report post Posted February 20, 2019 I am not sure what you mean by 4 inboard or 8 outboard? My unit has 8 airbags and shocks ,I hope this helps. Share this post Link to post Share on other sites
jleamont Report post Posted February 20, 2019 10 minutes ago, wolfe10 said: Likely trailing arm bushings, but as suggested, a picture will tell the story. We are thinking the same thing. My RM8H doesn't utilize sway bars and I don't believe the RR8 doesn't either (from the factory anyway). The brochure calls out 8 outboard mounted air bags, which is a concern its actually a trailing arm bushing issue. on a good note those are available aftermarket should it need them. Share this post Link to post Share on other sites
jleamont Report post Posted February 20, 2019 11 minutes ago, mikecollie said: I am not sure what you mean by 4 inboard or 8 outboard? My unit has 8 airbags and shocks ,I hope this helps. Good, the brochure is accurate that I located. Can you photo the points you lubed? Here is a photo of an aftermarket sway bar on an RR8 chassis, does yours look like that? Share this post Link to post Share on other sites
wolfe10 Report post Posted February 20, 2019 https://supersteerparts.com/product/motorhome/class-a/roadmaster-chassis/monaco-bushing/ Share this post Link to post Share on other sites
mikecollie Report post Posted February 20, 2019 No mine do not look like that.Mine are factory I am sure and I do not have any sway problems.I recently had it serviced and it drove great.My mechanic checked every thing in the front and said it looked good.The only problem I was having was the noise when I let the air out to lower the coach and now that is gone. Share this post Link to post Share on other sites
manholt Report post Posted February 21, 2019 Sorry Mike, lousy mechanic...he should have seen it right away! As mentioned, pictures are what tells the story! Share this post Link to post Share on other sites
