6 Basic Principles For Protecting Yacht Engines
1. Preventive engine maintenance
Good maintenance can maintain high engine productivity, control yacht operating costs, extend equipment life, shorten downtime, and increase the value of old machines.
2. Observe the maintenance schedule
Maintenance time can be calculated according to engine operating hours or fuel consumption, divided into maintenance when needed, daily maintenance, first 250 hours maintenance, every 250 hours maintenance, every 500 hours maintenance, every 1000 hours maintenance, every There are eight stages of maintenance of 2000 hours, every 3000 hours of maintenance, and every 6000 hours of maintenance.
3. Pay attention to the use of lubricating oil
The lubricating oil can reduce the friction between the surfaces of parts and reduce the wear and friction power loss of parts. Take away some of the heat absorbed by the engine parts and metal abrasive particles and other impurities to clean the engine parts. Neutralizes acidic substances to prevent them from corroding engine parts and preventing engine parts from rusting.
4. Avoid cooling system failure
More than 50% of engine damages are caused by cooling system failures. Causes of failures: 1) Overheating, water pump leakage, radiator blockage, and cylinder liner pitting. These failures can be avoided through proper maintenance. The maintenance of the coolant is very important to the life and performance of the engine.
Use correct starting procedures to reduce cooling system failures 1) After the engine reaches normal operating temperature, load the engine. Remove foreign objects from the radiator and fan. 2) Check the seal on the radiator cover to ensure that the rubber seal is not damaged, and check the pump every day for water leakage or oil leakage. 3) Select the correct coolant. The coolant is composed of three parts: water + additives + ethylene glycol. It has the functions of preventing heat conduction, preventing boiling and freezing, preventing rust, preventing the formation of mineral deposits, preventing cavitation, and resisting foaming.
5. Maintain the fuel system
Compared with 30% in 1970, the fuel cost now accounts for 60% to 90% of the total operating cost of the engine. Fuel cost is the largest expenditure in the entire process of using the engine. Pollutants and pollutants can enter the fuel from the outside and cause malfunctions. Even if it is invisible to the naked eye, it cannot be careless. As long as there is a spoonful of dust in the fuel tank, an injector can be damaged 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 fuel tank cover and fuel tank vent pipe and make repairs in time. When repairing the engine, there must be a clean repair place and cover all the dismantled pipes and openings.
6. Planned overhaul
Consideration time (X) and cost (Y) for overhaul: 1. Planned maintenance and repair; 2. Unplanned maintenance and repair; Overhaul considers overhaul before failure. Planned overhaul before the failure occurs makes sense, so that expensive unplanned shutdowns can be avoided; many original parts can be used according to reusable parts standards; engine life can be extended without major risk due to engine damage The danger of disaster; every hour of life extension, the best cost/value ratio can be obtained. If the engine has undergone a major accident and the engine must be disassembled, the engine block or crankshaft must be overhauled if it needs repair. The consideration of overhaul factors that affect the time of overhaul: the implementation of regular maintenance lubricants, antifreeze, and fuel, correct installation, whether the operating environment is used correctly, engine speed and load.