biennial maintenance contract for motorized actuator valve installed in stp-2 plant at rcf ltd , chembur , mumbai , deputation charges for service engineer per day basis , torque switch drive assembly , worm shaft assembly , hollow drive shaft assembly , compression spring , clutch ring , o-ring kit , oil seal kit , circlip kit , clutch fork assembly , retainer ring , limit switch drive assembly , declutch lever with stopperarrangement , declutch tripping arm , return spring , sub assembly shaft and pinion , compression spring , limit switch , torque switch , four train assembly , rgu change gears , motor , control module assembly , power module assembly , push button cover sub assembly , tolr