bids are invited for repairing of rig mse replacement of suitable rotary head with z plate fixing and accommodate in dth lmp 87 80 rig , replacement of suitable hydraulic motor for rotary head oem 400 , replacement of suitable hydraulic motor for winch , replacement of suitable direction control valve for rotation head , replacement of suitable direction control valve for feed system , replacement of suitable direction control valves for other winch, breakout jib boom, drill rod carousal and other hydraulic system , replacement of suitable hydraulic pumps , replacement of suitable micro feed control valves and auto feed control valves , replacement of suitable hydraulic filters system , replacement of suitable hydraulic rod lock cylinder , replacement of seal kits in leveling jacks , replacement of hydraulic hoses where ever required , replacement of suitable guide bottom bush plates , drill rod carousal to be repaired , mast crack and bend should be repaired , micro plating of cylinder piston should be carried out , conversion of hydraulic system to latest system , control panel board should be replaced , glass fitting should be carried out , denting works should be carried out , painting and writing works , electrical works should be carried out and head lights and parking lights should be replaced total quantity : 23