Does anyone have the weekday (Friday especially) diagrams?
Noticed that the 2005 ex-Belfast only has a trolley service, which is usually a good sign that it's a unit vice loco hauled.
www.translink.co.uk
When I was there back in March 2023, these were what was planned on weekdays. Obviously diagrams 3 and 4 can be combined - there is (was?) a loco swap after A123 arrives at Dublin, with that loco going to Inchicore, the Connolly standby loco going onto the set and a fresh loco coming off Inchicore as the standby. Diagram 2 is the more obvious candidate for a NIR DMU vice and particularly during leaf-fall season that was booked as DMU.
1 - A122 0735 CON-BEL; A125 1035 BEL-CON; A128 1320 CON-BEL; A131 1605 BEL-CON; A134 1900 CON-BEL
2 - A121 0650 BEL-CON; A124 0930 CON-BEL; A127 1235 BEL-CON; A132 1520 CON-BEL; A133 1805 BEL-CON; A136 2050 CON-BEL
3 - A123 0800 BEL-CON
4 - A126 1120 CON-BEL; A129 1405 BEL-CON; A136 1650 CON-BEL; A143 2005 BEL-CON
I think if the 2005 was DMU, then the 0735 the following morning would be as well, so suspect this may just be a catering crew rostering thing - there's only one "trolley only" service in the timetable, which doesn't balance in set diagramming terms.