... counter-weights, gears ,and flywheels), main bearings,thrust bearings, camshafts and bearings, connect-ing rods and bearings, pistons (including rings and pins), timing gear mechanisms, and auxiliary ... absorption of oils and solvents, and topromote cleanliness and ease of cleanup. Plates and gratings covering floor trenches must be grounded.Rubber matting should be installed in front of and around ... generating units. Operational testing ROUTINE MAINTENANCE Instructions Prime mover maintenance Generator and exciter maintenance Switchgear maintenance LUBRICATING OIL PURIFICATIONPurification...