spares for making readiness of stand by scrapper feeder of 1a2 unit i bottom ash hopper , supply of spares for making readiness of stand by scrapper feeder of 1a2 – unit –i bottom ash hopper technical specification as given below and as per drawing enclosed-25 sheets , main drive gear box , main drive sprocket with shaft complete assembly , carrying side idler wheel complete assembly set , return side idler wheel ( tension wheel ) complete , holeset coupling for scrapper feeder , hydraulic motor , chain with paddles connector and ht bolt and nut , chain tension adjusting assembly , submersible idler wheel with bearing housing assembly , submersible idler wheelmounting shaft rest housing , flight bar for scrapper feeder , scrapper feeder overflow ss 316 pipe with end flange