The vessel is a container feeder vessel equipped with Tsuji Deck cranes, type SSCHS4525-T1 with a lifting capacity of SWL 45t at 28m and 40T at 25m radius. Crane 2 developed a hoisting problem and ALATAS Tsuji Crane Specialist went on board to investigate. It was determined that the planetary gearbox had seized, and the gearbox needed to be removed from the crane and sent to Alatas Engineering workshop for strip down and inspection.
The hoisting winch gearbox is a planetary gearbox, make Sumitomo ComPower, type CPHFL-160A-QS-67A, drawing Nr. KHA760G. As it turned the gears were found completely smashed and a new gearbox had to be procured and installed. (download inspection report here)
Alatas mobilized engineers, tools & rigging equipment to remove the damaged rope winch gearbox from the crane and installed the new gearbox. The job to remove the hoisting winch is a large job and needed careful planning, mainly because of the hoisting which is located underneath the luffing winch frame and it is further complicated because of the very limited space inside the crane house. Also, considerations had to be made on how to lift the gearbox down to deck from the high up crane maintenance hatch.