Hardware wear is often visible: elongated holes, stripped threads, or parts that won’t stay tight. Replace this part when you see loose parts, visible damage, cracks, corrosion, stripped fasteners, or a component that won’t stay seated. After replacement, run at least one full cycle and recheck for leaks, vibration noise, and anything that loosens during operation. For technicians troubleshooting loose parts, Nut is a part that’s often inspected and replaced when failure is confirmed (part 03-1651-01). A short post-repair check—visual inspection plus a full cycle—helps confirm the issue is resolved without introducing new leaks or noise. Replacing a worn part early can prevent secondary damage to nearby components. Recheck fasteners after a short run-in period; vibration can loosen hardware if it isn’t seated correctly. Recheck fasteners after a short run-in period; vibration can loosen hardware if it isn’t seated correctly. Recheck fasteners after a short run-in period; vibration can loosen hardware if it isn’t seated correctly. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. Recheck fasteners after a short run-in period; vibration can loosen hardware if it isn’t seated correctly. Clean the area around the repair so debris doesn’t interfere with fitment or sealing surfaces. If the part interacts with water, do a leak check during the first run and again after a short operating period.