Ricardo link :
https://drive.google.com/open?id=1qV00kO6IdgCSjZu3CEGm31CPQ4qPuiEQ
Lubrication and cooling Link:
https://drive.google.com/drive/folders/1y6H_E_EljBAVtt9WrEXHeKv1A0Aa5NP5
Section videos
https://drive.google.com/drive/folders/1PFqdHKdJ5OtAdY_-0ZGbbfoSTMaCvoVO?usp=sharing