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6 Basic Principles For Protecting Yacht Engines
Jun 23, 2018

1, engine preventive maintenance

Good maintenance can maintain high engine productivity, control the operating costs of the yacht, extend equipment life, reduce downtime, and increase the value of old machines.

2, comply with the maintenance schedule

Maintenance time can be calculated based on engine operating hours or fuel consumption. It is divided into maintenance when required, daily maintenance, first 250 hours of maintenance, every 250 hours of maintenance, every 500 hours of maintenance, and every 1000 hours of maintenance. 2000 hours of maintenance, every 3000 hours of maintenance, and every 6,000 hours of maintenance.

3, pay attention to the use of lubricants

Lubricants can reduce the friction between the surfaces of parts and reduce wear and frictional power loss of parts. Take away some of the heat absorbed by engine components and metal abrasive particles and other impurities to clean engine parts. Neutralizes acid to prevent it from corroding engine parts and prevent engine parts from rusting.

4, to avoid the failure of the cooling system

More than 50% of the engine damage is caused by the failure of the cooling system. The causes of the failure are: 1) overheating, leakage of the water pump, blockage of the radiator, and corrosion of the cylinder liner. These faults can be avoided with proper maintenance. The maintenance of the coolant is very important for the life and performance of the engine.

Reducing cooling system failures Use the correct starting procedure 1) After the engine reaches normal operating temperature, load the engine again. Remove the heat sink and foreign objects on the fan. 2) Check the seal on the radiator cover to ensure that the rubber seal is not damaged. Check the water pump daily for leaks or oil leaks. 3) selection of the correct coolant, the coolant consists of three parts: water additive glycol, preventing heat conduction, to prevent boiling and freezing, to prevent corrosion, to prevent the formation of mineral deposition and prevent cavitation, anti-foaming.

5, maintenance of fuel system

Compared with 30% in 1970, the current fuel cost accounts for 60% to 90% of the total operating cost of the engine. The cost of fuel is the biggest expense during the entire use of the engine. Contaminant pollutants can enter the fuel from the outside and cause malfunction. Even if it is invisible to the naked eye, it cannot be ignored. A spoonful of dust in the fuel tank can damage an injector within 8 hours. Proper maintenance of the fuel system is critical to the normal operation of the engine.

When the engine is running, check the lid of the fuel tank, the vent pipe of the fuel tank, and perform repairs in time. Repair the engine with a clean repair site and cover all disassembled lines and openings.

6. Planned overhaul

Overhaul considerations (X) and costs (Y): 1. Planned maintenance and repairs; 2. Unplanned maintenance and repairs; overhauls taking into account pre-failure overhauls. It makes sense to have a planned overhaul before a failure, which avoids costly unscheduled downtime; many of the original parts can be used according to the reusable parts standard; the engine life can be extended without major engine damage The danger of a disaster; for each additional hour of life, the best cost/value ratio can be obtained. If the engine has had a major accident and the engine must be dismantled, the engine block or crankshaft must be repaired before major repairs are required. Overhaul considerations Factors that influence the overhaul time: Routine maintenance performance Lubricant, antifreeze and fuel, correct installation, correct operating environment, engine speed and load.


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