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INSTRUCTIONS FOR INSPECTING LIFTING NUTS FOR THREAD WEAR IN DUFF NORTON AIR MOTOR JACK MODELS 126RX, 144RX, 528RX, 536RX, 524RX, 228R, AND 326R At the heart of every Duff Norton air motor jack is the sheet metal. The gage has teeth that enter the thread power thread mechanism—comprised of an externally spaces and indicate whether the threads are worn threaded lifting screw and an internally threaded...
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