BAC Forum
General Boards => Technical Support => Topic started by: Christian Fish on July 24, 2021, 05:45:27 PM
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Does anybody know the part number for front airbags on a 2005 36’ Monterey, Roadmaster chassis. We crossed some very rough railroad tracks at about 10 mph and all of the front airbags are deflated. We are in La Crosse, WI
Thanks,
Chris
(425) 985-4075
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Christian,
I would be more inclined to check the height control rod coming loose of the adjustment boot. If you can put your jacks down, you should be able to locate it near the center of the front axle. For safety, you need to block the vehicle raised height before crawling under it. Hope this helps, Fred
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I would almost bet money it's the ride control valve came loose from the front axle. If the bag had blown you would hear air coming out of your bags and you probably would not be able to build air pressure.
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Thanks Fred and Lee, you guys were right. I finally got a chance to crawl underneath it today and the rod is missing and it looks like the upper rubber isolator is broken. I have an appointment on Wednesday at Quent’s Service in Oshkosh to get it repaired. I’m having the front airbags replaced while they are in there.
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I’d not be too quick to spend money on the air bags unless they can for sure show you they’re damaged. Replacing the rod and isolator should be enough under normal circumstances; air bags are often too quickly suspected.
While it’s up on the rack, check the two rear rubber isolators for micro-cracks or deterioration. They are an inexpensive preventive “repair”, $5-$7 at NAPA though not always in stock at some stores. Carrying a couple spares may prove handy one day; but always remember to never mess with them without the coach safely on blocks, over a pit, or on a truck-rated lift.
Joel
https://www.napaonline.com/en/p/MBIRN10JC?cid=paidsearch_shopping_dcoe_google&campaign=GSC-Towing&campaign_id=8911645606&adgroup_id=106416389246&adtype=pla&gclid=CjwKCAjwjbCDBhAwEiwAiudBywnlQp2DtwzJmsHMLRDEyrBA8u1K9jOwPfvTf_yWmOCDBzTHKlo32RoC0WkQAvD_BwE&
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As Joel has stated I would not go and replace the air bags, unless damaged somehow these bags will last a long time. I don't know if I've ever heard of a bag bursting under normal use, what will happen is the bag will start slowly seeping air out through the sides. But these would be a very small leak and take a good bit of time for the bag to loose much air.
One of the guys in here got a quote at $700 a bag to change them.
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My concern with the airbags was due to being 16 years old and subjected to a very violent jolt ( the front axel bounced 3 times and it literally felt like the front tires were airborne. I’m relieved that I didn’t lose the windshield) that they may have been compromised. I was quoted $250.00 per bag plus installation. I had the shop order the bags so I don’t know if they will let me not buy them.I’ll find out tomorrow. There didn’t seem to be any air leaks.
When I finally figured out the airbags were deflated, I had a mobile service come out to replace the bags but he brought the wrong ones. He didn’t detect the broken leveling valve.
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Again I will state you don't need new air bags, just replace the leveling valve and then see what you have. So the noservice person could not see that the leveling valve was bad and not connected to the front axle. Find a different service tech. That would be the first place I would look.