VERTICAL AIR-COOLED DIESEL ENGINE

Note for using the vertical shaft air-cooled diesel engine

1. Pre-start check

Check the oil level to ensure the oil volume is within the appropriate range because insufficient oil may wear engine parts. For example, can be viewed through the oil ruler, the oil level should be between the scale markers. Also check whether the fuel is sufficient and the fuel filter is clean to avoid impurities entering the fuel system and affecting the engine start.

Check the cooling fan and vents to ensure no debris blockage. Vertical shaft air-cooled diesel engine relies on air cooling, and good ventilation is the premise of ensuring normal cooling.

Check whether the connection part is firm, such as the tightness of the belt should be moderate, too loose may lead to insufficient power transmission, too tight will accelerate the belt wear.

2. Start process

When starting, place the shift lever in the neutral position. If it is an electric start, press the start button time should not be too long, generally not more than 5-7 seconds, so as not to damage the start motor. If a start is not successful, wait about 30 seconds for the next start to prevent the start motor from overheating.

After starting, observe the instrument panel (if any), such as oil pressure, water temperature (air cooler mainly observe oil temperature), etc. The oil pressure should be within the specified range, and the rise of the oil temperature should be stable to avoid abnormal rise.

3. In the process of running

Avoid long time operation at high load or overspeed conditions. Vertical shaft air-cooled diesel engine has its rated power and speed, beyond the rated range will make the engine overheating and wear more parts. For example, when the engine appears abnormal jitter, smoke and other conditions, should immediately reduce the load or stop inspection.

Pay attention to the ventilation situation of the operating environment. Although it is an air-cooled engine, but the ambient temperature is too high or poor ventilation will also affect the heat dissipation effect. Do not let the debris close to the cooling part of the engine.

Check the running status of the engine regularly, including listening to the engine sound; check the exhaust color, normal exhaust should be light gray, if black smoke may be insufficient fuel combustion, blue smoke may be oil into the combustion chamber.

4. Downtime precautions

Before shutdown, the load should be unloaded first, and the engine should run in the no-load state for 1-2 minutes, so that the temperature of the engine parts gradually decreases, so as to avoid local overheating caused by sudden shutdown.

For the vertical shaft air-cooled diesel engine with the turbocharged device (if any), do not cut off the power supply immediately after shutdown, to let the cooling system of the turbocharger continue to work for a period of time, generally 30-60 seconds, to protect the supercharger.

Maintenance key points of air-cooled diesel engine：

1. Clean the air cleaner

Air-cooled diesel engine depends on air cooling, and the cleaning of the air filter is crucial. Regularly clean or replace the air filter, because dust and other impurities if into the engine, will aggravate the parts wear. For example, after use in a dusty environment, the air filter is easy to block and should be cleaned in time. It is recommended to check every 50-100 hours.

2. Check the cooling fan and the guide hood

The cooling fan and air guide hood are key components of the air cooling system. To ensure that the fan blade is not damaged, deformed, and can rotate normally. The air shield shall be intact and tightly connected to ensure that the air can be effectively guided to the heating parts of the engine. If the fan is damaged, the cooling efficiency will decrease and the engine temperature is too high, the status of the fan and the guide hood should be checked once a month.

3. Oil inspection and replacement

Oil is the "blood" of the engine, and the oil level should be checked regularly. Too low oil level will affect the lubrication and heat dissipation effect. At the same time, the oil should be changed according to the prescribed cycle, because the oil will deteriorate after a period of use. In general, change the oil is operation every 100-150 hours or every 3-6 months (whichever comes first), and the oil level is checked before each use.

4. Fuel oil system maintenance

Clean the fuel filter regularly to prevent impurities from blocking the injection nozzle. In addition, the fuel tank should be kept clean to avoid the entry of moisture and impurities. After use in a humid environment, more attention should be paid to check whether the fuel system is flooded. It is recommended to clean the fuel filter every 200-300 hours and check the fuel quality each time the fuel is added.

5. Inspection and adjustment of valve clearance

The o-valve clearance varies with the use of the engine. If the valve clearance is not appropriate, it will affect the intake and exhaust of the engine, resulting in a decrease in power and increased fuel consumption. Generally, check and adjust the valve clearance every 300-500 hours to ensure the normal opening and closing time and lift of the valve.

6. Spark plug or injection nozzle check (for different types of engines)

For the gasoline air-cooled diesel engine, check the spark plug regularly. Spark plug electrode wear and carbon deposition will affect the ignition effect. For diesel air-cooled engines, check the fuel injection quality and atomization of the fuel injection nozzle. For example, the blockage of the fuel injection nozzle can cause uneven fuel injection and unstable engine operation. Spark plugs are recommended to be checked every 100-150 hours and the injection nozzle every 200-300 hours.