proper use of air shocks

inertia said

Uneven load squeezes air outta one shock, fills shock other side, not only does load lower one side, but the displaced air lifts other side, - car leans more .

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I had air shocks on my 72' Dodge Van to rid the rear sag. I installed them on one line. Reason was if and they did leak, the rear would drop the same on both sides. No one mention the shackles extensions for raising the rear. On my B300 Van I just turned the rear shackles over and gain around 4". No more leak down, problem solved!!!!