Some of the maintenance and maintenance of diesel pump points:
Diesel engine is an important component of the diesel fuel supply system, its working condition is good or bad, a direct impact on the engine power, economy and reliability. Correct maintenance is to ensure the normal operation of diesel pumps and extend the life of an important prerequisite. The author summed up the use of the correct maintenance of diesel pumps should do the following "points."
1, to use a good diesel and filter off to ensure that the diesel engine into the diesel fuel within a high degree of cleanliness.
In general, the diesel engine diesel fuel filtration requirements much higher than gasoline petrol requirements, in use to meet the requirements of the selection of diesel, and at least after 48h precipitation. According to operating conditions in a timely manner to clean the diesel tank to completely remove the oil tank at the bottom of the sludge and water, any diesel fuel impurities in the pump plunger on the diesel engine, the oil out of the oil filter, Valve parts and transmission parts cause serious corrosion or wear.
2, should always check the diesel engine pump oil pool of oil and its quality is in line with the requirements.
Main points of maintenance of diesel
Every time you start the diesel engine should check the amount of diesel engine oil and its quality (by the engine forced lubrication of the diesel pump), to ensure adequate quantity of oil, good quality, if the oil mixed with water or diesel and deterioration, the light caused Plunger and the oil valve even pieces of the early wear and tear, leading to diesel engine power shortage, start-up difficulties, causing serious plunger and oil valve even pieces of corrosion corrosion. As the pump leakage, the oil valve work, fuel pump tappet and shell wear, seal damage, will make diesel oil leaks into the oil pool and dilute the oil, it should be based on the quality of oil in a timely manner to replace the oil The pool to conduct a thorough cleaning, the oil sump at the bottom of the sludge and other impurities removed, or use the oil will not deteriorate for a long time. The number of oil can not be too much or too little, too much fuel within the governor, easily lead to diesel "speed", too little fuel will make poor lubrication should be oil feet or oil plane screw shall prevail. In addition, when the diesel engine is not used for a long time, be sure to check the oil in the pump oil tank whether there is water, diesel and other impurities, if you want to immediately replace, or because of long storage, water easily plunger, Pieces of rust stuck and scrapped.
3, to regularly check and adjust the diesel engine fuel supply advance angle and the cylinder fuel supply interval angle.
In use, due to coupling coupling bolt looseness, camshaft and the roller body parts wear, often lead to fuel supply advance angle and the cylinder fuel supply interval angle changes, the diesel combustion deterioration, diesel engine power, economy Sexual variation, while starting difficult, unstable operation, issued abnormal sound and overheating. In actual use, most drivers pay attention to the overall fuel supply advance angle of the inspection and adjustment, but ignoring the fuel supply angle (involving a single pump fuel supply advance angle adjustment) inspection adjustment, resulting in the overall adjustment of the first cylinder oil supply , But the rest of the cylinder due to the camshaft, wheel drive components such as the wear and tear of the fuel supply is not necessarily timing, the same will lead to diesel engine starting difficulties, lack of power, unstable operation, especially for longer use of diesel pumps to Said that more attention should be paid to the fuel supply interval inspection and adjustment.
4, to regularly check and adjust the fuel pump cylinder diesel engine.
As the plunger and the valve even pieces of wear and tear, resulting in diesel leakage, the cylinder will reduce the fuel supply or uneven, leading to diesel engine start-up difficulties, lack of power, fuel consumption increased, unstable operation. So to regularly check and adjust the fuel pump cylinder diesel engine to ensure that the diesel engine power play. In actual use, can be observed by diesel exhaust smoke, listen to the engine sound, touch the exhaust manifold temperature and other methods to determine the size of the fuel supply of the cylinder.
5, to regularly check the camshaft clearance.
On the diesel engine pump camshaft axial clearance is very strict, generally between 0.03 ~ 0.15mm, the gap is too large, will increase the wheel drive components on the cam surface impact, thereby increasing the cam surface of the early wear and tear, change the supply Oil advance angle; camshaft bearing shaft, diameter clearance is too large, easy to cause instability of the camshaft running, oil adjustment jitter rod, oil supply cyclical changes, so that diesel engine operation is not stable, so regular inspection and adjustment. Camshaft axial clearance is too large, can be added on both sides of the gasket adjustment, radial clearance is too large, generally to replace the new.
6, to regularly check the valve on the machine even pieces of the sealed situation.
Diesel pump work for some time, by checking the seal of the valve can be on the piston wear and oil pump work to do a rough judgment, which will help determine the repair and maintenance methods. Check, unscrew the cylinder high-pressure tubing connector, with the pump hand pump oil, so that the top of the diesel pump tubing oil outflow, then the oil valve seal bad (of course, such as the valve spring break will Such as multi-cylinder sealing bad phenomenon, the pump should be thoroughly debugged diesel engine maintenance, replacement parts.
7, to use the standard high-pressure tubing.
Diesel pump in the oil supply process, due to the compressibility of diesel, high-pressure tubing flexibility, high-pressure diesel fuel in the tube to form pressure fluctuations, pressure wave transmission in the tube takes a certain time, to ensure the same cylinder interval angle, The amount of uniform, stable diesel engine work, high-pressure tubing length and diameter is selected after the calculation. Therefore, when a cylinder high-pressure tubing is damaged, the application of standard length and diameter tubing replacement. In actual use, due to the lack of standard tubing, with other tubing instead of tubing length, diameter is the same, so that tubing length and diameter vary widely, although you can emergency use, but will lead to the tank of oil The angle of advance and fuel supply changes, resulting in machine work is not stable, so in use must use the standard high-pressure tubing.
8, to regularly check the relevant keyway and fixed bolt wear.
Related to the key groove and bolt mainly refers to the camshaft keyway, coupling flange keyway (with coupling transmission power of the pump), semi-circular keys and the coupling bolt. Diesel engine pump camshaft keyway, flange keyway, semi-circular key As a result of long-term use, the light wear and tear, so that the keyway widened, semi-circular key installation is not strong, the oil advance angle changes; heavy key roll down, resulting in power failure , It is necessary to regularly check, timely repair or replacement of worn components.
9, it is necessary to replace the wear and tear of the plunger and the valve even pieces.
When it is difficult to start the diesel engine, power down, fuel consumption increases, by adjusting the diesel engine and injector still does not improve, it should be dismantled diesel pump plunger and the oil valve even pieces, such as the plunger and the oil valve wear to a certain Degree, should be replaced in time, do not insist on reuse. Due to wear and tear caused by dual-engine diesel engine startup difficulties, increased fuel consumption, lack of power and other losses far more than the cost of replacement parts, the replacement of diesel engine power and economy will be significantly improved, so in time for wear Couplings to be replaced.
10, to properly maintain the diesel engine pump accessories.
Oil pump bolt, oil plane screws, oil pump fixing bolts, etc., to ensure that intact, these accessories on the work of the diesel pump plays a crucial role in the work of the pump, the oil pump, Important role. Such as the side cover to prevent dust, moisture and other impurities intrusion, breathing apparatus (with filter) can effectively prevent oil deterioration, oil spill valve to ensure that the fuel system has a certain pressure without entering the air. Therefore, these accessories must be enhanced maintenance, damage or loss to be found in time to repair or replacement.
Diesel engine is an important component of the diesel fuel supply system, its working condition is good or bad, a direct impact on the engine power, economy and reliability. Correct maintenance is to ensure the normal operation of diesel pumps and extend the life of an important prerequisite. The author summed up the use of the correct maintenance of diesel pumps should do the following "points."
1, to use a good diesel and filter off to ensure that the diesel engine into the diesel fuel within a high degree of cleanliness.
In general, the diesel engine diesel fuel filtration requirements much higher than gasoline petrol requirements, in use to meet the requirements of the selection of diesel, and at least after 48h precipitation. According to operating conditions in a timely manner to clean the diesel tank to completely remove the oil tank at the bottom of the sludge and water, any diesel fuel impurities in the pump plunger on the diesel engine, the oil out of the oil filter, Valve parts and transmission parts cause serious corrosion or wear.
2, should always check the diesel engine pump oil pool of oil and its quality is in line with the requirements.
Main points of maintenance of diesel
Every time you start the diesel engine should check the amount of diesel engine oil and its quality (by the engine forced lubrication of the diesel pump), to ensure adequate quantity of oil, good quality, if the oil mixed with water or diesel and deterioration, the light caused Plunger and the oil valve even pieces of the early wear and tear, leading to diesel engine power shortage, start-up difficulties, causing serious plunger and oil valve even pieces of corrosion corrosion. As the pump leakage, the oil valve work, fuel pump tappet and shell wear, seal damage, will make diesel oil leaks into the oil pool and dilute the oil, it should be based on the quality of oil in a timely manner to replace the oil The pool to conduct a thorough cleaning, the oil sump at the bottom of the sludge and other impurities removed, or use the oil will not deteriorate for a long time. The number of oil can not be too much or too little, too much fuel within the governor, easily lead to diesel "speed", too little fuel will make poor lubrication should be oil feet or oil plane screw shall prevail. In addition, when the diesel engine is not used for a long time, be sure to check the oil in the pump oil tank whether there is water, diesel and other impurities, if you want to immediately replace, or because of long storage, water easily plunger, Pieces of rust stuck and scrapped.
3, to regularly check and adjust the diesel engine fuel supply advance angle and the cylinder fuel supply interval angle.
In use, due to coupling coupling bolt looseness, camshaft and the roller body parts wear, often lead to fuel supply advance angle and the cylinder fuel supply interval angle changes, the diesel combustion deterioration, diesel engine power, economy Sexual variation, while starting difficult, unstable operation, issued abnormal sound and overheating. In actual use, most drivers pay attention to the overall fuel supply advance angle of the inspection and adjustment, but ignoring the fuel supply angle (involving a single pump fuel supply advance angle adjustment) inspection adjustment, resulting in the overall adjustment of the first cylinder oil supply , But the rest of the cylinder due to the camshaft, wheel drive components such as the wear and tear of the fuel supply is not necessarily timing, the same will lead to diesel engine starting difficulties, lack of power, unstable operation, especially for longer use of diesel pumps to Said that more attention should be paid to the fuel supply interval inspection and adjustment.
4, to regularly check and adjust the fuel pump cylinder diesel engine.
As the plunger and the valve even pieces of wear and tear, resulting in diesel leakage, the cylinder will reduce the fuel supply or uneven, leading to diesel engine start-up difficulties, lack of power, fuel consumption increased, unstable operation. So to regularly check and adjust the fuel pump cylinder diesel engine to ensure that the diesel engine power play. In actual use, can be observed by diesel exhaust smoke, listen to the engine sound, touch the exhaust manifold temperature and other methods to determine the size of the fuel supply of the cylinder.
5, to regularly check the camshaft clearance.
On the diesel engine pump camshaft axial clearance is very strict, generally between 0.03 ~ 0.15mm, the gap is too large, will increase the wheel drive components on the cam surface impact, thereby increasing the cam surface of the early wear and tear, change the supply Oil advance angle; camshaft bearing shaft, diameter clearance is too large, easy to cause instability of the camshaft running, oil adjustment jitter rod, oil supply cyclical changes, so that diesel engine operation is not stable, so regular inspection and adjustment. Camshaft axial clearance is too large, can be added on both sides of the gasket adjustment, radial clearance is too large, generally to replace the new.
6, to regularly check the valve on the machine even pieces of the sealed situation.
Diesel pump work for some time, by checking the seal of the valve can be on the piston wear and oil pump work to do a rough judgment, which will help determine the repair and maintenance methods. Check, unscrew the cylinder high-pressure tubing connector, with the pump hand pump oil, so that the top of the diesel pump tubing oil outflow, then the oil valve seal bad (of course, such as the valve spring break will Such as multi-cylinder sealing bad phenomenon, the pump should be thoroughly debugged diesel engine maintenance, replacement parts.
7, to use the standard high-pressure tubing.
Diesel pump in the oil supply process, due to the compressibility of diesel, high-pressure tubing flexibility, high-pressure diesel fuel in the tube to form pressure fluctuations, pressure wave transmission in the tube takes a certain time, to ensure the same cylinder interval angle, The amount of uniform, stable diesel engine work, high-pressure tubing length and diameter is selected after the calculation. Therefore, when a cylinder high-pressure tubing is damaged, the application of standard length and diameter tubing replacement. In actual use, due to the lack of standard tubing, with other tubing instead of tubing length, diameter is the same, so that tubing length and diameter vary widely, although you can emergency use, but will lead to the tank of oil The angle of advance and fuel supply changes, resulting in machine work is not stable, so in use must use the standard high-pressure tubing.
8, to regularly check the relevant keyway and fixed bolt wear.
Related to the key groove and bolt mainly refers to the camshaft keyway, coupling flange keyway (with coupling transmission power of the pump), semi-circular keys and the coupling bolt. Diesel engine pump camshaft keyway, flange keyway, semi-circular key As a result of long-term use, the light wear and tear, so that the keyway widened, semi-circular key installation is not strong, the oil advance angle changes; heavy key roll down, resulting in power failure , It is necessary to regularly check, timely repair or replacement of worn components.
9, it is necessary to replace the wear and tear of the plunger and the valve even pieces.
When it is difficult to start the diesel engine, power down, fuel consumption increases, by adjusting the diesel engine and injector still does not improve, it should be dismantled diesel pump plunger and the oil valve even pieces, such as the plunger and the oil valve wear to a certain Degree, should be replaced in time, do not insist on reuse. Due to wear and tear caused by dual-engine diesel engine startup difficulties, increased fuel consumption, lack of power and other losses far more than the cost of replacement parts, the replacement of diesel engine power and economy will be significantly improved, so in time for wear Couplings to be replaced.
10, to properly maintain the diesel engine pump accessories.
Oil pump bolt, oil plane screws, oil pump fixing bolts, etc., to ensure that intact, these accessories on the work of the diesel pump plays a crucial role in the work of the pump, the oil pump, Important role. Such as the side cover to prevent dust, moisture and other impurities intrusion, breathing apparatus (with filter) can effectively prevent oil deterioration, oil spill valve to ensure that the fuel system has a certain pressure without entering the air. Therefore, these accessories must be enhanced maintenance, damage or loss to be found in time to repair or replacement.
Manufacturers recommend: Shenlong stainless steel submersible pump
Keywords:Diesel pump, maintenance points
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