Diesel generator water leaks can be caused by leaking fresh water pump, water radiator or water pipes. Below we will talk in detail about the solutions to leaks of each component; Treatment of water leaks in diesel generator set:
1. Solution for water leaks in the fresh water pump
(1) If the monitoring hole of the fresh water pump is also leaking, the fresh water pump should be removed from the body and repaired. Disassemble it and replace the hydraulic seal.
(2) When the drain valve installed on the fresh water pump leaks due to a damaged spring, you can replace it with a new spring or drain valve. Maintenance personnel should apply grease to the drain valve spring to prevent the spring from rusting.
2. Solutions to water radiator leaks
(1) Methods for repairing the upper and lower water chambers of the water radiatorradiator After detecting the leaking part of the radiator, clean the leaking part. . Clean, then use a wire brush or scraper to completely remove metal paint and rust, then repair with solder. If there is a large area of water leakage at the fixing screws of the upper and lower water chambers, you can disassemble the upper and lower water chambers and then create two new water chambers of appropriate size. Before assembling the upper and lower water chambers, apply adhesive or sealant to the upper and lower sides of the joint, then secure it with screws.
(2) Method of repairing the radiator water pipe. If the damaged area of the radiator outer water pipe is found to be small during the inspection process, welding can be used to repair it. If the damaged part is large, use needle-nose pliers to tighten the pipe heads on both sidesdamaged pipe to make it watertight. However, the number of blocked water pipes should not be too large, otherwise it will affect the cooling effect of the radiator. If the radiator internal water pipe is damaged, remove the upper and lower water chambers, then replace or weld the radiator internal water pipe.
3. Solutions to water pipe leaks. When water pipes leak due to aging, they need to be replaced with new ones. If water lines are difficult to purchase, they can be wrapped with waterproof tape. If water leakage occurs due to clip corrosion, the clip can be replaced or wire wrapped.
How to block small circulation in Cummins 4B engine
Engine water blockage has been in contact with antifreeze for a long period, associated with high temperature, corrosion may occur. Ifthe cylinder is penetrated by rust, the antifreeze present in the water channel will escape and mix with the engine oil. The motor will not be cooled sufficiently and a high temperature alarm will be issued. This will also cause loss of lubricity of the engine oil and increased engine wear. Therefore, if you find that the coolant is leaking or the car is making noise
Tips for replacing the engine water cap
The engine water cap has been in contact with the car's antifreeze for a long time, coupled with the high temperature, it is very likely that rust will occur. If the engine water cap on the top of the cylinder is completely rusted, the automobile antifreeze in the waterway will leak out and mix with the automobile oil. The engine will not be cooled sufficiently, a high temperature alarm will sound, and the automobile oil will lose moisture, resulting inwill increase engine damage. Therefore, if a coolant leak or high temperature alarm is issued by the vehicle, check the time and check whether the water cap is intact. If a problem occurs, the engine water cap should be replaced immediately.
Engine water cap replacement method
Before replacing the engine water cap, the water should be drained cleanly, then the water filter element air and the air inlet must be removed, then the compressor. and the generator must be moved. Open it and you can see the water blockage after removing the heating pipe. The engine water cap is a replaceable ring-shaped metal cap. When removing the water cap, pull down one side of the water cap until the other side is lifted, pick it up with needle-nose pliers, then install one. new water cap.
On certain car models, theThe transmission must be removed to replace the engine water cap. After removing the transmission and removing the timing chain cover from the engine, you can see that there is a water plug on the engine block and. another on top of the cylinder. Water blockage, the overall replacement project is very important and should be carried out in a professional after-sales repair shop.
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Is it better to have a high or low flash point of the oil engine
What We Now talk about the flash point of engine oil, not only does this indicate that the engine oil is exposed to high temperatures, but it is less volatile and can be a fire risk indicator. So, is it better to have a higher or lower engine oil flash point? Let’s discuss it together today?
Under the same viscosity conditionsof engine oil, if the flash point of engine oil is higher, it means that the volatility of engine oil is lower, even if the engine oil is at . higher temperature, it can still maintain its temperature. Not easy to catch fire. If it is too low it can cause safety risks, so this point may need to be taken seriously. Generally speaking, the flash point of automobile oil is about 220°C, and the flash point should be 20-30°C higher than the operating temperature of the engine oil. Selection should be based on the operating temperature of the engine oil. After all, the working conditions of all automobile series are not the same.
Generally speaking, the flash point of engine oil is a very critical indicator, so when we buy engine oil, we should pay attention to the price of the flash point. flash point. But oneSpecial attention should be paid to the fact that everyone should try to buy engine oil reliably. After all, there are so many inferior motor oils on the market that you could accidentally be cheated. The flash point of this type of low-grade engine oil is generally not guaranteed (slightly lower), which brings certain risks to storage work, so we need to pay attention to it when purchasing. Tips for Replacing Engine Water Caps: Is It Better to Have a High or Low Engine Oil Flash Point @2019
How to Deal with Water Leaks in the Engine Oil Reservoir water from a diesel generator?
Small circulation means that after the cooling water has flowed out of the body, most of it does not flow through the water tank for heat dissipation and cooling., et the condition for entering the body to cool the engine is that the water temperature is below 70 degrees. In the small cycle, when the engine water temperature is lower than 76 degrees Celsius, the main thermostatic valve is closed, the bypass valve is opened, and the cooling water channel from the cylinder head to the radiator is cut off.
Performance of the Cummins 4B engine stuck in small cycle
The cooling water flows from the water jacket of the cylinder head and enters through thermostat bypass valve and bypass pipe. Water pump and sent to the water jacket of the cylinder block through the water pump. Since the cooling water does not dissipate heat through the radiator, the engine temperature can rise quickly. This method of circulation is called a small cycle. Air is mixed in the generator's cooling system, causing the blockageof the pipe. Damage to the suction valve and exhaust valve of the expansion tank will also directly affect circulation. , you should always check whether their pressure values meet the requirements. It is stipulated that the suction pressure is 10 kpa and the exhaust pressure is 40 kpa. In addition, the smoothness of the exhaust pipe is also an important factor affecting circulation.
Cummins generator coolant level is too low or not within regulations. Too low a fluid level can directly cause the coolant temperature to rise and prevent the coolant from circulating. The coolant is 50% anti-limescale. freeze in accordance with regulations. Add 50% deionized water to the liquid and add DCA4. If it does not comply with the regulations, it will cause a pip blockeline and rust in the pipe wall, which will prevent the coolant from circulating normally if the diesel generator. The water pump fails, check if the water pump is working well. If the water pump driveshaft is found to be worn beyond the limit, it means that the water pump can no longer operate and must be replaced before the cycle can be performed. normal.
How to drain the water tank of the diesel generator. Generator manufacturers believe that because the external ambient temperature is too low, the cooling water should be discharged after 15 minutes of shutdown when the water temperature has dropped, not immediately, otherwise the temperature difference between the fuselage and the external environment will be too important. , causing the diesel generator to fail. Some parts of the unit are deformed, which in turn affects the performance of the diesel engine (such as deformationation of the cylinder head, etc.). When the cooling water stops flowing, it is best to shake the diesel generator several times. At that time, the remaining cooling water that does not flow easily will flow out due to the vibration of the diesel engine. can prevent the water on the cylinder head from freezing. If it falls, cooling water will flow into the engine oil pan. The operator should also note that if the water drain switch is not removed, the water drain switch must be in the open state after water draining is completed to avoid the remaining cooling water cannot flow temporarily for various reasons and freezes. the corresponding parts of the diesel engine. Generator manufacturers remind users not to activate the water release switch and everything will be fine when releasing the water. They must also pay attention to the specific conditions of the diebit of water to see if the water flow is steady and if it is getting smaller. or faster and slower. If these conditions occur, it means that the cooling water contains impurities that hinder the normal flow of water. At this point, it is best to remove the water drain switch and let the cooling water flow directly from the body. If the water flow is still not smooth, use hard, thin steel objects such as wire to dredge it until the water flow is smooth.