Alatas Turkey technicians assessed the deck crane’s upkeep. They began with a visual assessment and a task list. They examined all of the Crane’s damaged parts and performed the required changes such as cleaning, replacement, and recommendations, to resolve the issues.


The customer contacted Alatas Turkey for deck Crane maintenance. The Alatas Turkey technicians came to Greece to service the deck crane.


The Alatas Turkey technicians attended to the vessel to maintain the deck crane. They made all the detections and based on these detections they made replacements, cleaning, and some recommendations to address the issues.

Job Scope

  • The specialists from Alatas Turkey flew to Greece, Syrus, to attend to the vessel.
  • They started with a pre-business meeting and then started working.
  • Since there is no electricity in the cranes, the technicians made a visual inspection and created a work list.

For crane 1:

  • The Alatas Turkey technicians observed the cabin interior was in poor condition and needed to be repaired.
  • Then they detected oil leakage in the solenoid valves of the hoisting system.
  • The technicians opened the filter in the hydraulic oil tank and found a minor number of metal particles in the magnet; it was cleaned and the cover was closed.
  • They then saw that the filter cover o-ring needed to be replaced.
  • The hoisting gearbox was checked and the oil level was found to be high.
  • The technicians checked the electrical switch box and it was seen that there was a bypass at 152/153/155/156.
  • Following the examinations, the experts discovered that the Wiper is not operating and that its connectors are disconnected.
  • The technicians of Alatas Turkey made some recommendations.
  • They recommended changing the slewing motor bolts and hydraulic oil and gearbox oil.
  • They recommended cleaning the hydraulic tank and cleaning and regreasing the dirty greases on the slew bearing.
  • They also recommended cleaning the coal dust because it was found in the slip ring.
  • The Alatas Turkey specialists checked the wiper water motor and discovered that it did not operate even though the motor was turned on, therefore they suggested replacing it.
  • They advised changing the motor since, following the wiper motor inspections, they discovered that the motor was always powered but did not move.
  • Then they cleaned the slew bearing and changed the slewing gearbox oil. They changed the feed pressure filters.
  • Hoisting valve solenoid removed. Since there were no suitable o-rings on board, old o-rings were used again.
  • The Alatas Turkey technicians finished cleaning the Crane.
  • Following the completion of these works, Alatas Turkey employees removed the main switch and electrical lines and handed them over to an electrician for testing.
  • They solved the water leakage with silicon and they also solved the hydraulic tank hose’s oil leakage.
  • Bypasses were checked and it was seen that the Load Corner Pressure switches were not working.
  • They tested the hook.
  • Then they changed Crane 1 Hoisting Load Brake valve.

For crane 2:

  • Alatas Turkey technicians detected the cabin interior was in poor condition and it needed to be repaired.
  • The filter in the hydraulic oil tank was opened and a small number of metal particles were seen in the magnet, it was cleaned and the cover was closed.
  • They detected that the filter cover o-ring needs to be changed.
  • Electrical switch box checks were made and it was seen that there was a bypass at 152/153/155/156.
  • The technicians deactivated the F28 fuse.
  • Slewing motor bolts were found to be in bad condition so the technicians recommended to change them.
  • They observed there was a dirty grease on the slip bearing and they  recommended to clean and re-grease it.
  • Then the technicians recommended cleaning the coal dust found in the slip ring.
  • Alatas Turkey technicians moved the hydraulic filters and oils. Then they cleaned the slew bearing gears and they detected that slew bearing gears had wear and stratches. Then they changed the slewing gearbox.
  • The hydraulic tank hose’s oil leakage was solved. Then feed pressure filters were changed by Alatas Turkey technicians.
  • Oil leakage was seen between Hoisting Gearbox and Drum,  so the technicians recommended to disassemble and check the drum.
  • Then hoisting solenoid valves were removed and the technicians transferred the valves to the workshop and checked. They observed that the 4HS27 Valve electrical cable was seen to melt. So they replaced the valve cable.
  • Crane 1 and Crane 2 Slew bearing greasing were carried.
  • The technicians drained the hydraulic oil and then cleaned the hydraulic tank.
  • Then they removed the damaged hoses.
  • The crane 1 hydraulic tank filter was changed.
  • Stud Bolts and Nuts were carried to the Scaffolding of the Crane 2.
  • Preparations have been made for the Crane 2 slewing bolt replacement and the technicians began to cut the bolt.
  • 68 pcs bolts were changed with new ones and tightening was made. Bolts were tightened according to Alatas bolt torque procedure.
  • The technicians of Alatas Turkey montaged the stud bolts and they greased the stud bolts and nuts.
  • They montaged the new hoisting hoses and main switch and cables.
  • The technicians fixed the Crane 1 jib’s electric cable.
  • They changed the Crane 1 luffing cylinder hoses and filled the Crane 1 hydraulic oil.
  • After they completed the main pump bleed process, they tested the Crane.
  • A hydraulic oil leak check was done. Then they made luffing limit settings and hoisting limit settings.
  • The technicians did the rocking test and hoisting brake test.
  • They replaced the 4HS22 pressure switch.  Then they drained Crane 2 hydraulic oil.
  • And lastly for Crane 2; the Alatas Turkey technicians changed the luffing hoses and filled the hydraulic oil. After that, they tested the Crane and did the rocking test. Hoisting and Luffing limit switches were set and then the hoisting wire was changed by Alatas Turkey technicians.
  • When the Technicians of Alatas Turkey finished their work, they turned over both cranes to the customer in working conditions.

Cabin interior


Checking the hoisting gearbox

Checking the electrical switch box

Slewing motor bolts in bad condition

Coal dust was found in the slipring

Checking the wiper water motor

Cleaning the slew bearing

Changing the slewing gearbox oil


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