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Tubes and push-fits

Reseat a weeping push-fit

Thin PTFE tubes push into elbows around both boilers. Owners fix a weep in this order, stopping when it is dry.

Unplug, let it go cold and open the machine.
Push the collar in, then pull the tube out.
Push the tube fully home again.
Still weeping: clean the tube end, add a thin smear of Vaseline and refit.
Still weeping: cut a few millimetres off the end, square, with a sharp blade or tube cutter.
Last, replace the fitting, with PTFE tape on its thread.

On the steam boiler's fill fitting, mark how deep the tube sits before you pull it. The factory puts a black mark on it.