Part 16-0866-21 is used when replacing Txv after inspection confirms wear or damage. Match the part number and visual configuration before ordering. Confirm the symptom first, then inspect the part location for wear, corrosion, cracks, or looseness. Check nearby components for secondary damage so the new part isn’t stressed immediately after installation. Once the underlying cause is addressed, repeat failure complaints usually reduce or disappear. Reinstall carefully so nothing pinches, rubs, or binds once the unit is back together. Reinstall carefully so nothing pinches, rubs, or binds once the unit is back together. Using the correct replacement part helps restore steady operation and reduces repeat service calls. Replacing a worn component early can prevent secondary damage to nearby parts. A correct-fit replacement helps restore predictable performance and reduces repeat callbacks. Technicians may encounter intermittent operation, worn part issues, or intermittent behavior depending on the application. Verify any model compatibility notes shown on the product page before completing the order. Keep the removed part until final testing is complete so you can compare fitment if needed. If the machine was down for a while, take the opportunity to clean the area around the repair. Verify any model compatibility notes shown on the product page before completing the order. Keep the removed part until final testing is complete so you can compare fitment if needed. If the machine was down for a while, take the opportunity to clean the area around the repair. Verify any model compatibility notes shown on the product page before completing the order. Keep the removed part until final testing is complete so you can compare fitment if needed. If the machine was down for a while, take the opportunity to clean the area around the repair.