Märklin H0 electric loco BR Ce 6/8 SBB "Crocodile", cleaning, maintenance, CCS 800, 1956, tutorial

In this tutorial I show the cleaning and maintenance of an old Märklin electric locomotive BR Ce 6/8 "Swiss Crocodile".
It is probably one of the most beautiful models from Märklin with fascinating technology
Therefore I am happy to be able to show it here.
Model: Märklin CSS 800.8 (later 3015), year of construction 1956, model of the class Ce 6/8 of the SBB.
Märklin H0