Buying a heavy diesel generator is one of the biggest choices you will make for your factory. When the city power grid fails on a hot summer day in Bangladesh, your whole business stops. You need that backup machine to start immediately. Every minute your workers sit in the dark, you lose hard-earned money.
Many business owners think their job is done after they buy the generator. But a neglected engine will break down very fast. It will cost you hundreds of thousands of Taka in repairs. A heavy industrial engine needs daily and weekly care to survive the extreme heat, heavy monsoon rain, and thick dust of our local weather.
Following a strict care routine is the only true way to make your generator last for many years. It does not matter if you own a Perkins, Cummins, Baudouin, or EMSA engine. They all need human care to stay strong.
Follow these 10 essential maintenance steps to protect your heavy engine and keep your business running safely all year round.
1. Check the Engine Oil Very Often
Engine oil is exactly like blood for your machine. Inside the engine, heavy metal pieces slide against each other thousands of times every single minute. The oil puts a thin, smooth layer between these metal parts. If the oil runs low or gets dirty, the metal parts will grind together and destroy the engine block completely.
You must check the oil level every single week. Pull out the long metal dipstick from the side of the engine. Wipe it clean with a fresh cloth. Put it back in, and then pull it out one more time. Look at the marks on the stick. The oil must sit between the “Low” and “Full” marks.
Also, look at the color of the oil. Fresh oil looks like clear honey. If the oil looks completely black, feels thick like mud, or smells burnt, you must change it right away.
2. Clean the Air Filters Regularly
Factories and big construction sites in Bangladesh have a massive amount of dust in the air, especially during the dry winter months. Your generator breathes in this air to burn the diesel fuel. If the air is dirty, thick dust gets sucked right inside the engine.
To stop this dirt, your generator has a large paper air filter. This filter catches the dust before it goes deep inside. But this filter gets choked very fast. A choked filter makes the engine work too hard. It will burn extra diesel and give you less power.
Open the filter box and take out the paper filter. Tap it gently on the ground to knock the loose dust off. You can also blow the dirt away with a gentle air hose. Never wash a paper filter with water. If the filter is totally black and the dirt is stuck deep inside, throw it away and buy a new one immediately.
3. Watch the Cooling Water Level
Heavy diesel engines create a massive amount of internal fire and heat during a long work shift. If this heat stays inside, the metal parts will melt. The cooling system uses special water (coolant) to pull this extreme heat away from the engine.
During our hot summer months, the cooling system works extremely hard. You must always check the radiator water tank before you turn the machine on. Look at the clear plastic overflow bottle to see if the water level is high enough.
Important Safety Warning: Never, ever open the metal radiator cap while the engine is hot. The water inside is boiling and under high pressure. If you open it, boiling water will shoot out and burn your skin badly. Always wait for the engine to cool down completely before you open the cap to add more coolant.
4. Test and Clean the Starter Battery
A dead battery is the number one reason a generator fails to turn on during a sudden power cut. The heavy diesel engine needs a massive electrical spark to start moving. The battery provides this strong push.
Keep a close eye on the battery every single week. Look at the metal posts on top of the battery. Do you see a white, crusty powder? That is leaked battery acid. This white powder stops the electricity from flowing. Clean the white powder off using a small wire brush and some warm water.
Make sure the wire nuts are turned completely tight. A loose wire will cause a starting failure. Batteries usually live for about two years. Replace the battery every two years, even if it looks fine. Buying a new battery is much cheaper than stopping your factory floor for a whole day.
5. Drain Water from the Diesel Fuel
You might not know this, but water naturally builds up inside your diesel fuel tank. During the day, the metal tank gets very hot. At night, the metal tank gets cold. This temperature change makes “sweat” or water drops form on the inside walls of the tank. These water drops fall into your diesel fuel.
Water is poison to a diesel engine. It causes deep, heavy rust inside the tiny fuel pipes and fuel injectors. To fix this, your engine has a special part called a fuel-water separator.
Water is heavier than diesel, so it sinks to the very bottom of this separator bowl. Find the small twist valve at the bottom of the bowl. Open it slightly once a week. Let the dirty water drip out into a cup. Close the valve tightly the second you see clean, pure diesel coming out.
6. Look for Floor Leaks Like a Detective
Make it a solid habit to walk all the way around the machine every single morning before anyone turns it on. You must look closely at the concrete floor right under the engine block.
If you see dark, slippery drops, you have an oil leak. If you see bright red or green watery drops, your cooling system is leaking. If you see clear drops that smell very bad, your diesel fuel pipe is leaking.
Finding a few drops today is a good thing. It means you can fix a small, loose pipe right now for very little money. If you ignore the small drops, the pipe will burst later. A burst pipe will ruin the engine and stop your business completely.
7. Turn the Engine On Every Week
A generator is just like a human body. It needs regular exercise to stay healthy. If you let the machine sit quiet and cold for a full month, the oil will drop to the bottom, and the top metal parts will dry out.
You must turn the generator on for 20 to 30 minutes every single week. Do not just run it empty. Turn on some heavy factory lights or small machines so the generator feels a real load.
This weekly test does three great things. First, it pushes fresh, wet oil back to the top of the engine. Second, it burns off any wetness hiding inside the exhaust pipe. Third, it proves to you that the machine is truly ready to work when a real grid failure happens.
8. Wipe Off the Dust and Keep It Clean
Dirt and oily grime act exactly like a thick, warm winter blanket. If your engine is covered in thick dirt, it cannot cool down. The heat stays trapped inside the dirt layer.
Take a clean, dry cloth and wipe the outside metal canopy every week. Wash away any bird drops or sticky tree sap on the outside so the metal paint does not rust in the heavy monsoon rain.
Also, wipe the digital control screen very gently. You must be able to read the warning numbers clearly. A clean engine room shows that your workers respect the heavy machinery. A clean engine always runs much cooler and lasts much longer.
9. Check the Rubber Belts and Soft Hoses
Look inside the engine room. You will see black rubber belts spinning the big cooling fan and the water pump. You will also see thick rubber hoses carrying the hot cooling water.
Rubber absolutely hates high heat. The extreme heat inside the metal box makes the rubber dry out, crack, and snap. If the fan belt snaps while the engine is running, the generator will overheat and shut down in just two minutes.
When the engine is totally off and cool, push the rubber belt with your finger. It should feel very tight and strong. Shine a flashlight on the belt. Look very closely for tiny dry cracks. Squeeze the rubber water hoses with your hand. If they feel super soft or mushy, they are about to burst. Replace bad belts and hoses immediately.
10. Call a True Expert Once a Year
Your daily workers can easily do the first nine steps on this list. But once a year, you need a true master mechanic to look deep inside the machine.
A heavy industrial engine has hidden parts that a normal worker cannot test. A professional engineer will bring special computer tools. They will test your Automatic Voltage Regulator (AVR) to make sure the electricity output is perfectly safe for your factory tools. They will adjust the engine valves and clean the tiny fuel injectors. This deep yearly check finds hidden, silent problems before they explode and cause a massive fire or shutdown.
Protect Your Heavy Investment Today
Routine care is the only secret to long engine life. It saves you massive amounts of money and stops sudden, scary factory shutdowns. Do not wait for your engine to blow black smoke or stop completely. Fix small things today to prevent big disasters tomorrow.
If your internal factory team needs expert help, contact Run Power Engineering Ltd. today. Our highly trained mechanics travel all across Bangladesh. We know exactly how to service Perkins, Cummins, Baudouin, and EMSA generators properly. Call our support office to set up a monthly service plan. Keep your daily power running safely, protect your machines, and stop fearing dark days.