Knowing that folk on here like oily stuff and bearings here is what I was working on yesterday....
....... but then I had to check the axle bearings.
These are the four big black boxes outboard of the wheels. The bottom half of the box is dropped to allow the "Oiling Pad" to be inspected.

This is a spring loaded steel frame with a string woven pad.

The ends of the string sit in thick oil in the bottom of the box, and it slowly acts as a wick to lubricate the steel axle shaft.

The actual bearing is a brass casting with a soft "White Metal" bearing cast onto the brass and machined to size and shape.

This is very basic as wagons usually travel slowly and have very little maintenance over periods of years. The main problem with these bearings is that water can get into the box and displace the oil - this can lead to a "Hot Box" and failure.
The bearings are on another of my "Toys" an ex BR 20ton Brake van now at the Great Central Railway.
It has been in the shed for refurbishment and re - painting.
The other side and end have now been painted black and some minor touching in of the brown has been completed. Also a perspex window has been replaced with glass so the outside is now weather proof again.
As can be seen, it is very dusty in the shed, hence the "splodges" in the images - I will have to get the camera lens cleaned properly!
I still have the inside to repaint but that can be done next week.