( i ) repairing of limit switch assembly twin entry flss25l2ccwof, ( ii ) fabrication of track chain adjusting bolt, ( iii ) repair & maintenance of hydraulic traction motor lh ( pt. no. 611b050000067 ) , ( iv ) repairing of track link assembly lh side ( pt. no. 011m100000079 ) , ( v ) repair & rectification work of upper desk assembly & lift cylinder mounting of sdl 971 at 4, 5 & 6 incline of dhori ( k ) colliery.-1.01 limit switch assmebly twin entry flss25l2ccwof (enter zero for this row) 1.02 limit switch (c.c.w.) (625vo40000129) 1.03 terminal box, twin entry m/c (eec0013286) 1.04 enclosure f.s. (machining) (eec0004083) 1.05 cable gland s. c., f. c. s. -25 -plc2 (625a040000177) 1.06 2 pin modled terminal (eea0003900) 1.07 stud (eea000390) 1.08 track chain adjusting bolt (enter zero for this row) 1.09 sdl machine track chain adjusting bolt new making with head and adjustment nut. size- 60 mm head x 430 mm long x 45mm od x 300 mm long thread. 1.1 hydraulic traction motor lh (pt. no. 611b050000067) side part. (enter zero for this row) 1.11 repairing of hyd. traction motor assly. rh part no. 611b 050000068 (enter zero for this row) 1.12 a) opening of rotary group, cleaning & refitting (eea 000 9359) 1.13 b) making new threaded pin (eea 000 9361) 1.14 c) repairing of housing (eea 000 9362) 1.15 d) repairing of cover (eea 000 9395) 1.16 e) making new plug (eea 000 9387) 1.17 f) repairing piston with piston ring (eea 000 9556) 1.18 opening, cleaning & refitting of seal kit, part no. (eea 000 9368) . (enter zero for this row) 1.19 a) replacement of shaft seal ring (eea 000 9364) 1.2 b) replacement of o ring (eea 000 9366) 1.21 c) repairing of seal lock nut (eea 000 5031) 1.22 track link assembly 011m100000079 lh side. (enter zero for this row) 1.23 making new track bush (1027a 060000003) 1.24 making of track pin (1027a 060000009) 1.25 cutting of old pin & bush & fitting of new pin & bush. 1.26 upper desk assembly & lift cylinder mounting. (enter zero for this row) 1.27 upper desk arm place both side pin seat damaged, oval & worn out portion repairing & recitifcation with the help of metal filling by spl. welding electrodes as required up to roundness & welding reshaping by grinding/machining as per pin size. 1.28 lift cylinder plate both side damaged seat, oval & worn out portion repairing & rectification with the help of metal filling by spl. welding electrodes as required up to roundness & after welding reshaping by grinding as per pin size & also making required size, distance ring 2 nos. & welding with both side of lifting cylinder pin place with centre & alignment & also making locking arrangement of pin. 1.29 en- 9 steel bush new making as per sample. 1.3 lift cylinder worn out pin welding, machining as per original shape. 1.31 upper desk bodies at broken bolts removing by drilling. 1.32 oversize new thread making by tapping. 1.33 press lock plate new making as per size. 1.34 lift cylinder opening & fitting mounting upper desk arm assmebly.