desertdeals69 Report post Posted September 30, 2020 checked into a campground and my air dump is not working. I started it this morning and the tanks aired up but when I move the lever to the right the bags don't air up. When I move the lever to dump there is no air sound. Any Ideas. Freightliner 36 ft Discovery. Share this post Link to post Share on other sites
huffypuff Report post Posted October 1, 2020 Are the airbags already inflated since they didn't dump? Share this post Link to post Share on other sites
desertdeals69 Report post Posted October 1, 2020 No, they won't inflate but I have tank pressure. I think its the dump valve assy because it won't inflate the bags. When I bought this coach it had just under a 100K miles and the air driver filter had never been changes. I think some debris maybe contaminated the system. It has worked ok for over 3 years, 20K miles, since I changed the filter. Share this post Link to post Share on other sites
campcop Report post Posted October 1, 2020 Air driers should be serviced every three years. Share this post Link to post Share on other sites
rsbilledwards Report post Posted October 2, 2020 (edited) Agreed service interval. Valves are not complicated, at least what is on my Panther. Take them out and blow them clean. It may be the solenoid needs replacing or the point filed if serviceable at all. Edited October 2, 2020 by RSBILLEDWARDS Share this post Link to post Share on other sites
desertdeals69 Report post Posted October 2, 2020 Problem solved. Did not have any thing to do with the dump valve. Turns out right front air bag split. Replaced the bag today and it seems to be working fine. Share this post Link to post Share on other sites
wildebill308 Report post Posted October 3, 2020 1 hour ago, desertdeals69 said: Problem solved. Did not have any thing to do with the dump valve. Turns out right front air bag split. Replaced the bag today and it seems to be working fine. Yes I can see how that would cause a problem. Bill Share this post Link to post Share on other sites
rayin Report post Posted October 4, 2020 Duct tape it. Share this post Link to post Share on other sites
manholt Report post Posted October 4, 2020 Ray, that's the old way...now we use Gorilla tape! 😂 Share this post Link to post Share on other sites
jleamont Report post Posted October 5, 2020 On 10/2/2020 at 7:14 PM, desertdeals69 said: Problem solved. Did not have any thing to do with the dump valve. Turns out right front air bag split. Replaced the bag today and it seems to be working fine. DD, how old was that bag? Share this post Link to post Share on other sites
rayin Report post Posted October 5, 2020 Joe, his signature indicates a 1998 MH. MIne is a 1999 Spartan chassis, I will be inspecting my air springs soon as a result of this thread. Share this post Link to post Share on other sites
jleamont Report post Posted October 5, 2020 1 hour ago, RayIN said: Joe, his signature indicates a 1998 MH Yeah, I saw that but DD did took this coach on as a resto/mod build. Share this post Link to post Share on other sites
manholt Report post Posted October 5, 2020 I'm guessing 18/20 years! Share this post Link to post Share on other sites
desertdeals69 Report post Posted October 5, 2020 13 hours ago, jleamont said: DD, how old was that bag? 1998. Lived a full life! I was talking to my friend who is the service trainer for Spartan chassis and he said somewhere around 10 years is the expected life of a bag. Some go a lot longer. I am going to replace all four bags when I get home. I just installed a used bag I carry with me. Share this post Link to post Share on other sites
jleamont Report post Posted October 6, 2020 (edited) 11 hours ago, desertdeals69 said: around 10 years is the expected life of a bag WOW you did good! I got lucky with ours then, Installed 7/2001 (DOB) to this past spring I replaced all 8. Edited October 6, 2020 by jleamont Share this post Link to post Share on other sites
rayin Report post Posted October 6, 2020 I just inspected the air springs under our MH, all are smooth, no cracks, creases, folds, or anything. I'm going to hold off replacing these originals for the present. Share this post Link to post Share on other sites
manholt Report post Posted October 7, 2020 Ray, carry a couple off replacement bags...just in case! Share this post Link to post Share on other sites
hermanmullins Report post Posted October 7, 2020 Thanks to all for this discussion, my bags are almost 19 years old. I am the second owner and know they are original. Since their are 10 of them I plan on buying new ome a couple at a time and next summer having them installed. Good topic that all with air ride RVs should heed. Herman Share this post Link to post Share on other sites
bm02tj Report post Posted October 7, 2020 I have a 1999 Renegade on a FL80 Freightliner chassis I replaced the 4 bags two years ago and they had deep cracks in them You have a choice of quality go for the best as they are not much more Share this post Link to post Share on other sites
rayin Report post Posted October 7, 2020 4 hours ago, manholt said: Ray, carry a couple off replacement bags...just in case! Thanks Carl, great advice. I'll buy a rear and a front, I think they are different numbers. Firestone air spring construction. Share this post Link to post Share on other sites
kaypsmith Report post Posted October 7, 2020 I replaced all 8 of mine two years ago and all 8 shocks, they were 30 years old and one of the left drive axel bags developed a leak. Ride improvement as well. Share this post Link to post Share on other sites
