overhaul

completely changing a system in order to make it work more efficiently; improving something so that every part of it works properly การปรับปรุงใหม่

Within six years I am sure you'll be able to gauge whether your wiring and cable system needs an overhaul or not.

The pair campaigned successfully against the Lisbon Treaty, disrupting the the European Union’s plans to overhaul its decision-making structures and give it a stronger voice in world affairs.

The Obama administration planned to unveil its sweeping plan to overhaul financial regulation, according to a source familiar with thinking at the US Treasury Department.