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If the notch in the piston rod did not engage the Retract Pin in the Ratchet Link when the Link was joined to the Housing, it will engage the Pin automatically during the first advance stroke. 4. When the Link is connected to the Housing and the wrench is started, the reaction surface of the wrench will move against the contact point and the nut will begin to turn. 5. When the nut is no longer turning and the Pump Gauge reaches the preset pressure, release the remote control button. The piston r