tender for overhauling and repairing of 245 kv horizontal double break center sl. no. item description 1 overhauling and repairing of 245 kv horizontal double break center operated turn- twist heavy duty isolator rating 2000 amp. hitachi make along with work of dismantling the bottom bearing housing after taking out the solid core support insulator stakes and complete cleaning of housing bearing and housing covers replacement of defective bearings in all respect. replacement of worn out of rollers installed in mechanism after overhauling work re-alignment of isolators stacksby using shim washers complete oiling and greasing of all associated components for smooth operation complete the job satisfactorily. the complete work including all consumable provided by the contractor at his own cost.