Inspection:

• Backlash and tooth pattern verification,
• Trust bearing clearance verification on pinion and propeller shaft,
• Propeller blades seals exchange,
• Propeller shaft seals exchange,
• Functional test.

General overhaul:

• Current state check,
• Thruster disassembling,
• Thruster parts check, measure parts,
• Machining,
• Assembling,
• Backlash and pattern adjustments,
• Pressure test.