bids are invited for maint of rota side wagon tippler repl of main rails and raising of rails , tightening, repl. of all bolts, clits , repl,re fixing of bushes , repl of spur gear assembly , repl of rack pinion , oh of reduction gear box , replacement of sector gear , alignment, grouting of tippling base rollers , repl,repairing of hopper grill , alignment of tipplers , repl,repairing of outboard stool , dismantling,repl of top pivot housing , repl of wooden block , matching of teeth of sector gear , re-fixing lock lever , repl of top stop locking gears assly , side beam fixing of tippler , alignment of motors of wagon tippler , servicing of spray line valve size 4 inch , servicing of spray line valve size 3 inch , servicing of spray line valve size 2 inch , oh of overhead spray pumps , servicing of spray nozzles , lifting, proper fixing of vf tray , changing, fixing of side packing , to provide the patches , repl of plates of vf tray, chutes , removal of foreign , fillings oil in gear box , servocoating,tightening, repl of damaged bolts , greasing of all the nipple point , repl of break shoe liner , repl of main rail beam of wagon tippler , provision of backup in main rail beam , work on central platform , repairing of main rail beam , repairing of rollers of coal spill plates , fab, erection of back support of vf mouth chute , fab., installing of vf tray supports , repl of coal spill plate , repairing of pit platform of main rail beam , repl of damaged beam of vf , repairing of counter balance beam , repairing of mdu base structure , repairing of damaged split spur gear , fab., of mouth piece of vf , erection of new fabricated mouth piece of vf , oh of hoisting system , oh of hopper spray pump, line , provision of hopper liners, in coal hopper of vf , fab. erection of coal hopper partition stool , raising and re-fixing of mouth piece of coal liner chute of vf , repl of back,side plate of mouth piece , to attend the coal leakage from top mouth piece , re-fixing,repositioning of side and back supports , repairing,reposition of side guards of mouth piece , repl of buffer block and buffer pads of counter balance beam , repl of brake drum of thruster brake assly , repl of input,output,intermediate pinion of gear box , fab. and erection of counter balance beam , repairing of wagon tippler plate form by cutting and welding , removing the fallen loaded wagon in pit , inserting the side beam pins in bracket , dismantling,removing the broken shafts of wagon tippler , installation of drive and adjacent intermediate shaft , cutting, fabricated and installation of resting outer rail beam bottom plate total quantity : 998