GBS Gearbox Services international brand of Schaaf- en Boorwerk Rotterdam B.V.
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On-site Inspection and repair on HANGZOU ADVANCE GEARBOX GWC 6066 gearbox

Inspection and repair on HANGZOU ADVANCE GEARBOX GWC 6066 gearbox

  • GWC 6066
  • Input=___ rpm / ____ KW
  • Denmark

Scope of work:

We performed an inspection and repair on a gearbox HANGZOU ADVANCE GEARBOX GWC 6066.

This client from Denmark came to us with this HANGZOU ADVANCE GEARBOX GWC 6066. We inspected the gearbox and performed a repair. After a succesful testrun we shipped the gearbox back to the client.

This page presents the findings of the performed inspection onboard a ship.

GBS international was invited to perform the below mentioned work.

Scope of work:

- Visual inspection propulsion gearbox, Hangzhou Advance GWC 6066

Small leakages were observed around the gearbox oil pipes and covers.

Micro pitting is observed on the working flank of the pinion gear of the intermediate shaft ahead and working flank on the output shaft gearwheel of the output shaft.

Small steel particles were observed in the filter elements.

The bearings that were visible by eye show running marks. (the pictures taken with our camera were not detailed enough to add in the report) (endoscope was not available during inspection)


- Repair any leakages around the gearbox.

- Perform an inspection with endoscope within 6 months to complete the inspection, most bearings were not visible during inspection.

- Check the running hours of the gearbox. In case the running hours exceed the OEM recommended running hours a complete overhaul is advised. This overhaul includes opening the white metal bearings to inspect on any damages.

- It is recommended to perform an annual visual inspection on this gearbox to observe if the micro pitting is progressive or stable.

- To check and clean the oil filters monthly.

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Location - date:

Denmark - January 2018

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