tender for refurbishment of thrusters - nt arga - 3 service charges for carrying out the following jobs:- ( i ) dismantling completely of upper gearbox, lower gearbox, stem section, wet clutch unit and steering section spares. ( ii ) cleaning calibrating and dye-penetration checks. ( iii ) cleaning of exterior thruster assembly body, shaft and propeller. ( iv ) inspection and checking of propeller shaft for trueness. ( v ) de preservation, dismantling of complete thruster. ( vi ) inspection and checking all spares. ( vii ) cleaning, inspection and fitting of new spares in upper and lower gear box. ( viii ) torque tightening of all fittings. ( ix ) grease lubrication of all parts as per oem recommendation. ( x ) re-assemble complete thruster in work shop premises. ( xi ) fitting of thruster on board with all associated mechanical pipe connections. ( xii ) sea trials to be undertaken by the firmpost fitment of thruster and proving of satisfactory performance . 4 materials 5 priority flow control valve 6 hexagonal head screw 7 washer 8 washer spring 9 washer 10 hex nut 11 gasket nbr 70 12 anod for hrp 4111 wm 13 hydraulic oi, l cooler kit 14 hexason head bolts 15 socketr head cap screw 16 hexagonal head screw 17 liner 18 pressure spring 19 temp gauge 20 rotation union 21 retaining ring 22 bearing set 23 seal set for hrp 41111 wm 24 socket head cap screw 25 seal set for hrp 41111 wm 26 torquemotor 27 filter 28 relieve valve 29 hex.head screw plug 30 socket set screw 31 seal holder 32 o-ring 33 lip seal 34 hexagonal head screw 35 washer 36 bearing 37 pressure spring 38 pump shaft 39 clutch plate for hrp 4111wm ( woc ) 40 bearing 41 parallel pin 42 bush 43 o-ring 44 o-ring 45 lip seal 46 lip seal 47 bearing 48 o-ring 49 spring 50 seal 51 bearing set for hrp 4111 wm 52 seal set for hrp 41111 wm 53 gasket 54 filler breather cap 55 lock nut 56 seal set for hrp 41111 wm 57 liner 58 bolt set lgb 4000 prop seal change consisting of follwing item: ( i ) propeller shaft seal, ( ii ) .socket set screw, ( iii ) .hexagon head bolts ( iv ) . washer 59 anode 60 seal cover plate 61 washer 62 retaining ring 63 retaining ring 64 seal set for hrp 41111 wm 65 spring pin 66 retaining ring 67 retaining ring 68 hexagonal head screw 69 customs duty