Cleaning up part #1 - rear brakes, electric motor and transmission

Once I got a considerable amount of parts out I started some cleaning and scrubbing to find out what could be used and which parts would definitely have to be replaced.

After scrapping of the bigger pieces of dirt, all was cleaned up with heating fire petrol (odorless) and WD40, and obvious a lot of scrubbing and soaking!!

Here's how shocking it can be:

(not really necessary that say that top ones are before cleaning and bottom ones after) 

The brakes mounting plates after some scratching:

and after cleaning

IMPORTANT: do not clean or soak the suspension bushes, brake pistons or its rubbers in petrol, gasoline, WD40, etc... ! specially the rubbers are not compatible with a lot of solvents! 

Particularly for the brake cilinders and rubbers, use a clean soft tissue (free of sand and dirt) and the brake fluid you got when emptied the brake circuit. Then submerge all parts in remaining brake fluid and leave them there until reassemble, in this way you prevent rubbers from drying and cilinders from getting corrosion. 

The electric motor, transmission pinions and chain were really hard to get clean as they had a lot of old dry grease... with an ambient temperature between 5 and 8°C this even gets harder! 

Nevertheless at the end it looks great 

(check out the previous condition here). 

So far I don't need to scrap any part :] 

Maybe I will just do some sandblasting and corrosion protection coating in a couple small metal parts. 

Brake pistons and cilinder rubbers are pretty ok! 

The mounting plates are made of die casted aluminum with a protective coating. Still good for at least some 10 more years! 

I'll think about the brake shoes latter, but since everything is out most likely I'll have them refurbished. The anchor pins of the brake shoes, are in pretty good with almost no play.