Hi all.
Thanks for your replies.
The valve gear to the left (closest to the cab) is where it was attached too. I have removed it to try and refit.
I believe it was connected to the black plastic part under the running plate. I have removed it from the body to gain access but it came off also which I have re glued.
The smaller of the 2 ends connects to black plastic part but can't find where. The service sheets show it does but its not clear at all where it connects too.
I'll assume I've dropped a part off the plastic part? Any ideas if these are repairable/replaceable ?