Tender For annual maintenance contract for servicing, maintenance, overhauling, repairing & supply of spares for 29 nos. caterpillar engines (models i.e. c-9, c-15, c-18 (frm), c-18 (dte), c-2.2 & c-3.3), fitted on plasser make dynamic tamping express, oem crcc make shoulder ballastcleaningmachine, point and crossing tamping machine, multipurpose tamping machine and oem gemac make point and crossing tamping machine over northern railway for a period of two years i.e. f.y. 2026-27 & 2027-28.