Two factory train for renewing overhead line equipment on the West Coast Mainline was ordered in 1999, and delivered in 2000. Each train-consist was made up of five separable autonomous units (four of which were single-ended MPVs); the entire train is fitted for multiple working allowing self powered transportation to a work site. In operation the train-consist splits into five sub-trains: the first unit is used to dismantle and recover previously installed wire; the second unit replaces catenary support wires ("droppers"), the third and fourth units install new wire and droppers, and the fifth unit is used for quality control – measuring and recording the new installation. To allow slow speed control the MPVs were fitted with hydrostatic drives. A Windhoff MPV was also used as the basis of a piling train – used to install catenary masts. The piling train including MPV mounted piling hammers (Fambo AB), and installation cranes (Hap, Palfinger).