"The problem with the brake system was traced to a cracked pipe elbow. The cause is a mystery. It rather looks like frost damage but, unless the entire air brake system was full of water there's no way in which there could have been water in this elbow ( it's at the top of a vertical pipe).
Until we replace the elbow the crane can't function as a vehicle in an air braked train, but the problem doesn't affect it's "stand alone" braking system (the one we normally make use of).
The hand hole covers have were installed and the boiler filled. As usual there was some weeping on the upper tube sheet but otherwise everything looked fine.
Most of the grease cups were refilled, the oilers for the travelling gears were reinstalled, and some oiling was done."