Is there a thread that someone can share a step by step account on how to replace the front airbags on a 2000 U320? I believe there are special tools needed to complete this task.
Pretty good place to start
://www.allthingsforetravel.com/2020/02/17/air-bags/
Search function here works pretty good as well...
Do the shocks at the same time.
The hardest one is the front left air bag. Some members say to remove the fender but I couldn't see how that could help but
removing the wheels would have made a big difference. I didn't remove the left front wheel but I should have. I removed the
right front wheel. The rear wheels I had the wheels off. Someone had pictures of the tools he made up within the last few weeks
that would help. The elbow air fitting a crowsfoot may work as I didn't have one I ground out a impact socket to fit over the fitting
and that worked. Don't forget to block the coach. Others will come up with good ideas also.
I think it depends on the coach. My most difficult were the front side of the rear axle. It was much easier to remove the fender for better access to those. All 4 front axle bags were easy, without removing any fenders.
Look at this post from Scott. Air spring tools (https://www.foreforums.com/index.php?topic=40196.msg404334#msg404334) Special tools are not required, but he fabricated tools to make it much easier.
I believe he said he was able to replace all of them without removing any panels.
Also look at this post from Pierce. Post on air springs (https://www.foreforums.com/index.php?topic=40196.msg400885#msg400885)