supply of air spring failure indication cum brake application device (fiba), knuckle for c.b.c coupler body assembly, distributor valve for escorts and brake accelerator in amdbs of lhb coachair spring failure indication cum brake application device (fiba), knuckle for c.b.c coupler body assembly, distributor valve for escorts and brake accelerator in amdbs of lhb coach,air spring failure indication cum brake application device (fiba) make-escorts as per escorts drawing no. 2eb 8724 [ warranty period: 30 months after the date of delivery ] ] , brake accelerator in amdbs of lhb coaches escorts part no. 1eb6367 [ warranty period: 30 months after the date of delivery ] ] , distributor valve for escorts as per drg. no. 3eb 6621 for lhb coaches. [ warranty period: 30 months after the date of delivery ] ] , knuckle for c.b.c coupler body assembly for aar h type, as per escorts sk 611. (pac item) . specification no.rdso/2011/cg-03(rev-1). [ warranty period: 30 months after the date of delivery ] ]