Key points for the daily maintenance of aviation piston engines

The key points of daily maintenance for aviation piston engines mainly include the following aspects:

First, regular inspection and maintenance

Engine appearance inspection

Regularly inspect the exterior of the engine to check for any oil, air or water leakage.

Check whether the engine fixing bolts are tightened to ensure that the engine is stably installed on the aircraft.

Check whether the connection between the engine and other components of the aircraft is normal, such as the pitot tube, throttle lever, etc.

Fuel system inspection

Regularly inspect the fuel system, including whether the fuel pump, fuel injectors, fuel filters and other components are operating normally.

Check if the fuel filter is clogged and replace it regularly.

Use aviation fuel that meets the standards provided by the engine manufacturer to ensure the quality of the fuel.

Lubricating oil system inspection

Regularly inspect the lubricating oil system, including lubricating oil pressure, lubricating oil temperature, lubricating oil filter, etc.

Check the lubricating oil level, add lubricating oil in time, and ensure that the lubricating oil level is within the normal range.

Check if the lubricating oil filter is clogged and replace it regularly.

Regularly conduct lubricating oil spectral analysis to effectively monitor the wear condition inside the engine.

Cooling system inspection

Regularly inspect the cooling system, including whether the water tank, water pump, radiator and other components are operating normally.

Check the coolant level and quality, and add or replace the coolant in time.

Make sure the engine vent is unobstructed to prevent the engine from overheating.

Second, inspection and replacement of key components

Ignition system inspection

Regularly inspect the ignition system, including whether the ignition coil, high-voltage wires, spark plugs and other components are working properly.

Use the dedicated electrical connector tester recommended by the electrical connector manufacturer to test the electrical connectors and eliminate the substandard ones.

Regularly check the spark plug clearance and adjust or replace it if necessary.

Intake system inspection

Regularly inspect the intake system, including the wear and deformation of the cylinder valves, cylinder heads and their sealing gaskets.

Check whether the intake and exhaust ducts are unobstructed and free of foreign objects blocking them.

Check if the air filter is clogged and replace it regularly.

Mechanical component inspection

Regularly check whether key components such as the crankshaft, connecting rod, piston and valve are worn or failed.

Check whether the piston pins, piston rings and other components are worn or damaged, and replace the expansion rings or pistons as necessary.

Check if there are any foreign objects inside the engine, such as carbon deposits or metal shavings, and clean them up in time.

Third, operation norms and precautions

Correct use of the engine

Follow the operating procedures provided by the engine manufacturer and use the engine reasonably.

Avoid long-term low-speed operation to prevent carbon deposits and wear.

When taking off and landing, be careful to operate gently and avoid overloading the engine.

Pay attention to engine preheating and cooling:

When starting in a low-temperature environment, use the preheater to heat the engine and fuel system.

After the flight, let the engine idle for a period of time. Wait until the engine cools down before turning it off.

Regular break-in and maintenance

New engines or those that have undergone major overhauls need to be run-in in accordance with the prescribed procedures.

Regularly carry out deep maintenance on the engine, including cleaning the interior of the engine and replacing vulnerable parts, etc.

Fourth, recording and monitoring

Maintenance record

Establish detailed engine maintenance records, including maintenance time, maintenance content, replaced parts, etc.

By maintaining records, track the usage and maintenance of the engine, and promptly identify and solve problems.

Performance monitoring

Regularly monitor the performance of the engine, including parameters such as rotational speed, temperature and pressure.

Through performance monitoring, assess the working condition of the engine and adjust the maintenance plan in a timely manner.

In conclusion, the key points of daily maintenance for aviation piston engines cover multiple aspects such as regular inspection and maintenance, inspection and replacement of key components, operation norms and precautions, as well as record-keeping and monitoring. Only by conducting comprehensive and meticulous daily maintenance work can the safe and reliable operation of aviation piston engines be ensured and their service life be prolonged.