• The assembly of a gearbox, which contains a large number of precision-machined parts, must be perfectly mastered and executed by trained and qualified personnel.
    • Before the actual assembly process, all parts are controlled and stored in our warehouse.
    • After the validation of a client’s order, a technical data card is emitted. This card will follow the gearbox throughout the entire assembly process, to allow for its traceability.
    • Each fitter will assemble a complete gearbox. His first task will be to fetch the parts from the warehouse and make sure all the components are available, before starting the assembly.
    • Next, the parts are being cleaned. This is done in a special “washing machine”.
    • Then, the component units can be assembled. See picture below.
    • After this, the assembly of the gearbox itself will begin. The job is executed under strict respect of our quality rules.
    • Once completed, the gearbox will receive its external pipework: this will establish the hydraulic connections required for operation: ahead clutch / reverse clutch pressure, lubrication of the rotating parts and gearwheels, monitoring equipment for pressure, temperature and other parameters…
    • Now the transmission is installed on the test bench to undergo a strict testing routine, making sure of good operation under almost-real life operating conditions. For further information, please refer to the “test bench” section.
    • Having undergone testing with success, the gearbox is cleaned and dried.
    • It will then receive a specific corrosion protection coating for marine environment.
    • Finally, the gearbox receives its paint coating according to the client’s specification.
    • Quality control then make a final inspection.
    • After this last inspection, the QC quality certificate will be delivered, in accordance with the appropriate survey organisation specifications (client’s choice).
    • On Masson-Marine level, the QC certificate will enable us to invoice and to pick up the gearbox for shipping.
    • Thus, the last operation is the packing of the gearbox.

    • Propeller assembly

    • The assembly of our propellers takes place in the perfectly adapted AMP factory in China. However, they can also be tested, reassembled and inspected at our French site.
    • The environment of this kind of assembly process is of course absolutely clean and orderly.
    • CPP are products that require the handling of long, large, and heavy components (such as the propeller shaft, hub, blades, etc.)

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