This video explains how to change the engine air filter on a R19, the change of this filter improves the cosumption of your car, and as its an easy maintenance operation, it highly recommendable to do it each 15.000 km, or at least yearley. It's not recommended to clean the air filter because the result it's not the same as a new one. Moreover this spare piece could be bought for less than 15 € in evey auto part shop, included online auto part shops!!!
The video tutorial is valid for all the Renault 19 car models, TS, TR, TSE , TXE...