10 misunderstandings in winter construction of excavator
Inadequate preparation to start the engine in cold weather
It is also one of the wrong operations to directly start the excavator engine on a cold day without doing sufficient inspection work. You should first check whether the safety lock lever is locked; Set fuel control knob to low speed position; The start switch key is kept in the preheated position; Do not operate the walking pedal or joystick after engine start if the oil pressure monitor indicator is on.
Start with an open flame
Special attention to a point with open flame combustion start is absolutely not, in simple words, the air filter is removed, and then dipped in the cotton diesel ignited after the ignition is placed in the intake pipe combustion start.
Doing so hurts the machine, because impurities in the air will enter the cylinder, causing the piston and other parts to wear, damage to the machine.
Run the machine without getting warmed up
For faster and more simple, many tractor driver there is a wrong way to start the machine, such as no preheating is in a hurry to start the engine, it is also very hurt machines, to master the correct preheating method, excavator before the start of the correct preheating operation check is: first press the preheating switch, preheat 10 seconds after starting the engine, momentum motives smooth operation, also check the meter and the indicator light is normal, etc.
Do not warm the machine directly operate the excavator
In winter, after the excavator engine starts, the operator will immediately go to work and start operating directly without warming the machine, which is strictly prohibited. The operation of the warm engine is essential. The warm engine mainly includes the warm engine of the engine and the preheating of the hydraulic oil. After the engine starts, it should first run at low speed for no more than 5 minutes. Remember to warm the machine after the end of the formal start of construction work.
Bake oil pan over open heat
When operating excavators in winter, it is quite dangerous to use an open fire to bake oil sump.
This is easy to make the oil in the oil pan deterioration and burning, leading to the decline of oil lubrication, causing serious wear and tear of the machine, serious when there will be a major accident of burning the machine.
Choose the wrong diesel and oil
In winter, when choosing diesel oil, oil and hydraulic oil for excavators, it is too random. This is a big mistake in operation. The use of unreasonable oil will affect the service life of excavators. In winter, light diesel oil with low freezing point and good ignition performance should be selected. The oil should also choose low freezing point. The oil filter should be replaced, and the hydraulic oil that can adapt to the local lowest temperature in winter should be replaced.
Premature release of cooling water
When will the cooling water be released in winter? First of all, it is necessary to know that premature release or not release cooling water is a wrong operation. If all the water is not discharged, the remaining cooling water will freeze and expand; If the earlier cooling water, the engine temperature is too high at this time, suddenly meet the cold air will shrink, serious crack; The correct operation is: the engine flameout idle for a while, until the cooling water temperature reaches below 60℃, then flameout and discharge water.
Don't care about the insulation of the equipment
Who says excavators don't need heat in winter? Winter should take good care of your love machine, after the winter work, do not forget to cover the insulation curtain on your excavator engine, insulation sleeve, when necessary in front of the radiator with cardboard to block the wind.
Improper walking operation
When the excavator moves, it is necessary to walk. In winter, the excavator should pay more attention to walk. Remember to keep a constant speed, avoid sliding slope, such as sliding, do not hit the direction and suddenly swing on the car body, it is easy to produce side sliding and lead to dangerous situation; When the excavator is walking, it should keep away from the surrounding obstacles as far as possible to avoid the collision between the parking pulley and the obstacles.
Ignore the excavator after shutdown
Don't think that when you're done, you can just put the digger aside. It's dangerous. After shutdown, the mud and water on the body of the excavator should be removed to prevent the damage of the seal due to the mud and dirt entering the seal together with the water droplets. It is important to place the machine on a hard, dry ground and to drain water from the fuel system to prevent freezing.
The above are only a few of the many maintenance of excavators. When using excavators in winter, we can not forget the daily maintenance of butter, fuel filter element, hydraulic system and so on, so as to ensure the efficient work of excavators.