An XPJ-14 tanker.

The question here is the red painted roller bearing assembly end keeps.

I haven't a clue. Perhaps a derailment replacement.

In the States, wagons which are damaged and require field installed bogies or parts to get
the wagons home for repair or unload prior to shop repair, are fitted with coloured parts
to signify TEMPORARY.

B.W. Ring, 2001 April 23, Capital Park, South Africa.