I have the same issue parking our 2006 36' in my aircraft hangars, which incidentally requires a parallel parking procedure in a 80í wide opening with a column exactly in the middle of the opening Ė lots of fun. Susan and I along with a half dozen airport neighbors agonized over this for a couple hours as we measured and re-measured trying to figure how to get an 11í11Ē Alpine under a slightly less than 12í opening. Yes, the measured reduction in height is right at 4Ē with the suspension deflated, so it was supposed to fitÖ
I made a couple of calls to WRV and was told to hold down on the HWH Dump button and then back the coach in before the suspension inflated. Well, this sort of worked, but I figured there must be a better way. The next WRV suggestion was to open the air dump valve in the right rear bay. Now that sounded like a great idea. The only problem, when you open the dump valve, at least on our Alpine, the parking brake is applied and you arenít going anywhere. So really, the only way you can do it is to use the HWH Dump button and be very careful.
Whenever we do this docking or undocking maneuver we are always on the cell phones, communication is critical, with the Alpine is positioned just before the rear air conditioner comes up on the opening. I dump the air with the HWH Dump button, back the rear air conditioner through, then back further to the front air conditioner, I again dump any residual air that might have pumped up the bags and continue the backing. I enter the hangars at about a 35 degree angle, turning the wheel to the left as soon as the front air conditioner is clear. Once the air conditioners are clear Iíve got lots of vertical clearance, then itís a simple matter of straightening the wheels and pulling ahead parallel to the opening. Believe it or not, it really is easier to do than to describe. In less than a minute the whole operation is complete. Itís a little scary the first few times, but have faith, it does get easier.
One more item, I was too was concerned about moving the coach on deflated suspension bags; for what it is worth now, WRV said it was not a problem, but they didnít recommend driving any distance with the bags deflated.
2006 Alpine 36' FDTS