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For the centerpoint suspension, be sure to check the connections behind the fill port in the water service cabinet. Air it up and spray some soapy water on each connection and then perform the trimming of the ends of the tubing as described earlier and your system will probably hold air after that. There is also a lube available for these types of fittings used in the OTR class 8 push connect fittings (Parker Fittings) for the air suspension and air brake fittings that eases the insertion of that tubing into the seal inside the fitting to make sure it seats completely and will come apart easily when needed to.
If you run without air or low air you've changed the normal stroke range of the shock absorbers and they will bend or even break the extended tang off the bottom spring pack clamping plate. A quick fix is to interchange two plates from one side to use the other tang welded onto the plate. The worst case scenario with shocks that are bottoming out is the mount welded to the frame of the trailer breaks loose, thats going to require a re-weld of the mount to the frame. You can actually cause the shocks to hyper-extend as well with similar resulting damage, by running too much air in your Centerpoint.
This is all stuff you need to consider if you intend to change the setting of your suspension to another set of holes in the frame stanchions to change the height of your RV.
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Sandra, Bruce
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