I doubt there would be any damage, when the air is let down, the suspension sits on steel stops. I installed electric solenoids so this wouldnt happen, once yiu release the momentary switch, they close. If I had a manual setup, I would probably make it a habit of closing the valve as soon as it dumps. When I park, I do t dump the air, it leaks down in a week or two by itself.
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Brian & Jeannie
2018.5 Seneca 37RB with to many mods to list
2015 Jeep JKU Rubicon
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