When installing a new AODD pump, or one that was repaired and placed on the shelf for later use, you should always check the tightness of the pump’s hardware.
Though this seems intuitive, many operators don’t know that pump hardware tends to loosen up due to material creep, vibration in transit and temperature changes. Hardware torque specifications can be found in the service and operating manual.
Remember: It's important that the pump isn't under pressure when tightening hardware.