Under Extremely Cold Weather Excavator Driver Needs To Know

In this article, we will introduce some of the issues that excavator drivers need to be aware of in cold weather.

1. For cold weather, choose the right fuel and oil

The low temperature in winter makes the diesel fluidity worse, the viscosity increases, it is not easy to spray, and the atomization effect is poor. Therefore, the diesel model should be selected based on the lowest temperature of 7-10 °C below the current local season.

10 diesel engine: suitable for high speed diesel engine with preheating equipment

5 Diesel: Suitable for temperatures above 8 °C.

0 diesel: suitable for use at temperatures from 8 ° C to 4 ° C

-10 diesel: suitable for use at temperatures from 4 ° C to -5 ° C

-20 Diesel: Suitable for use at temperatures from -5 ° C to -14 ° C.

-35 Diesel: Suitable for use at temperatures from -14 ° C to -29 ° C.

-50 Diesel: Suitable for temperatures below -29 ° C to -44 ° C or below -29 ° C.

This is currently the domestic application of light diesel oil is divided into 7 labels according to the freezing point, the appropriate amount of diesel should be selected according to the local minimum temperature to avoid the diesel being frozen.

At cold temperatures, the oil becomes more viscous, causing increased engine load, affecting performance, and even damaging parts. In order to ensure good performance output of the engine, special low viscosity oil should be selected at low temperature, and special antifreeze oil can be used if necessary.

2. the correct use of antifreeze

In cold weather, choose a lower freezing point antifreeze and select the appropriate antifreeze according to the lowest temperature in the area. If necessary, drain the coolant after work breaks every day to prevent the coolant from freezing, causing the engine to fail to start and damage related parts. However, it should be noted that the engine is running at idle speed before the flameout. When the cooling water temperature drops below 60 ° C, the water is not hot and then the water is turned off. The water discharged from the bucket is placed in the cab and added the next day. Also very good.

3. How to start excavator

Diesel engines often start to run hard at cold temperatures. First, the battery is low, and the battery will be seriously degraded in a low temperature environment. The battery is not enough to drive the motor, causing the motor to fail to start. Therefore, it is especially important to protect the battery in a cold environment. After the work is finished, the battery can be taken out and stored in a dry, temperature-friendly place to keep the battery charged. Another reason for the difficulty in starting the engine in winter is that the speed is not high, the preheating is insufficient, and the diesel does not reach the combustion temperature. There are two general preheating methods: air preheating and combustion chamber warming. Ordinary engines are air preheated. We can find that the old excavator does not have a preheating function and often needs to spray the starter fluid. To help warm up, many new machines now have this feature, usually in the cab start switch. Before the excavator starts, it is usually preheated for 5-10 minutes before starting the excavator.

4. Some misunderstandings of excavators in low temperature environment

In heavy snow, visibility is low and the ground is covered with thick snow. When walking, it is forbidden to walk upwards, otherwise it is easy to cause danger such as side slip. Check the ground conditions during operation and operate at a constant speed. If the engine is difficult to start, do not operate the starter for more than 15 seconds. The interval between starts should be more than 30 seconds to avoid burning the motor. The engine cannot be started. It is forbidden to grill the engine intake pipe or even the fuel tank with an open flame. This seems to be possible, but in reality it can damage the engine and burn the machine, causing a fire.

You Must Know The Seven Reasons Why The Excavator Tubing Bursts

Hydraulic tubing electric squibs are a headache for many excavator masters. Due to the leakage of hydraulic oil caused by the electric squib, maintenance after the accident is time consuming and costly. So what are the common causes of hydraulic tube bursts?

1. use inferior hydraulic pipe

Many people in the original hydraulic pipe damage, in order to be cheap, many people choose quality inferior hydraulic pipe that does not meet the standard, the performance and reliability of this hydraulic pipe is far lower than the original.

In addition, the metal joints at both ends of the hydraulic pipe are poorly crimped, and the sealing and reliability cannot be guaranteed. After using for a period of time, there will be fuel consumption and even oil leakage. Therefore, the replacement of hydraulic pipes must use regular large brand products.

2. the hydraulic system pressure is too high

The pre-set pressure of the hydraulic system increases the likelihood of an explosion. The method is to test the pressure generated by the main pump in combination with various actions. If the pressure value is confirmed to be too large, the pressure of the multi-way valve can be appropriately reduced.

3. the hydraulic oil temperature is too high

If your machine's hydraulic system is hot, it will also affect the sealing of the hydraulic components, causing the pipe to explode; in addition, high temperatures can cause the hydraulic components to expand, causing the valve plug and the valve body to get stuck, causing local high temperatures and causing the pipe to burst.

4. Mix different grades of hydraulic oil

The excavator factory uses 46 hydraulic oil by default. If you add 68 hydraulic oil commonly used in the accessory library during use, the hydraulic oil will be unstable and damage the parts. High viscosity hydraulic oil has poor fluidity, which can cause high pressure in the hydraulic system, causing pipeline leakage.

5. bad operating habits

If the operator is rude during operation, a large impact load can create a transient impact pressure in the hydraulic system. Impact pressure can cause premature failure of high pressure tubing joints and hoses, pressure or bursts, greatly reducing hydraulic pressure. The service life of the pipe. In addition, rude operations can affect the durability of other components, resulting in frequent mechanical failures. Therefore, the operation of the excavator must be gentle, do not do high-intensity, high-risk movements.

6. hydraulic tube corrosion

Although most hydraulic pipes currently have a certain degree of corrosion resistance, after a long period of exposure of rubber products to diesel oil, the colloids are fluffy. Produce certain adverse effects, try not to let the hose contact with gasoline and diesel. Generally, rubber will expand the colloid and fluff when soaking gasoline and diesel for a long time. Therefore, in normal use, contact with corrosive liquids such as diesel should be avoided, and the outer surface of the hydraulic pipe should be cleaned frequently.

7. Abnormal vibration of hydraulic pipe

Both the gear pump and the plunger pump have oil pulses during operation. This pulsation causes high frequency vibration of the hydraulic pipe, and this high frequency vibration cannot be completely eliminated. Long-term abnormal vibrations can cause fatigue and wear of the hydraulic pipe. Therefore, be sure to check the pipe clamps and protective sleeves of the hydraulic pipes. Once the pipe clamp is loose, it will wear the hydraulic pipe and even wear the hydraulic pipe.

Easy Replacement Of Excavator Air Filter In Just Six Steps

Excavator air filter(excavator parts drawing system)is one of the important products of the engine. It protects the engine, filters hard dust in the air, provides clean air to the engine, prevents the engine from being worn by dust, and is reliable and durable for the engine. Sex plays a key role.

To avoid this, the filter must be installed as required to enhance routine maintenance practices. The excavator reaches the specified maintenance time. There are a lot of excavator spare parts drawing on www.partsdic.com. The general filter is replaced for 500 hours and the fine filter is replaced for 1000 hours. Below I will tell you the steps to replace the air filter.

Step 1: When the engine is not starting, open the rear door and filter end cover of the cab, remove and clean the rubber vacuum valve at the lower cover of the air cleaner case, check if the sealing edge is worn and replace if necessary. (Please note that it is forbidden to remove the air filter while the engine is running, or wear a protective eye shield if you use compressed air to clean the filter).

Step 2: Remove the air filter element and check if the filter element is damaged. If yes, please replace it in time. Clean the external air filter from inside to outside with high pressure air. Note that the air pressure should not exceed 205 kPa (30 psi). Illuminate the inside of the external filter with a light. If there is a small hole or thin residue on the filter element after cleaning, replace the filter.

Step 3: Remove and replace the air filter. Note that the internal filter is a disposable part. Do not clean or reuse.

Step 4: Clean the inside of the box with a rag. Note that high pressure air purge is prohibited here.

Step 5: Install the inside and outside of the filter element and the filter end cap correctly, and make sure the arrow mark on the cover is facing up.

Step 6: After the outer filter is cleaned 6 times or the working time reaches 2000 hours, the outer filter needs to be replaced. When working in harsh environments, the air filter maintenance cycle should be shortened appropriately. If necessary, an oil bath prefilter should be used to replace the oil in the prefilter every 250 hours.

Rainy Day Excavator Maintenance Method

In this article, let's talk about several aspects of rainy day excavator repair for your reference.

1. Timely cleaning

In case of heavy rain, it should be cleaned up in time.

2. Paint surface

The acidic components in the rainwater have a strong corrosive effect on the surface of the excavator paint, which can damage the paint surface of the excavator over time. Therefore, in the rainy season, it is best to paint the excavator. The easiest way is to wax. In a long time, the sealing effect is better. Regardless of the method used, the excavator should be coated with an invisible protective layer to prevent fading and aging of the paint surface.

3. Chassis care

The chassis is closest to the ground, especially affected by road conditions. In general, this part is most prone to rust, and the wheel casing may even loosen the perforations. Therefore, it is necessary to pay attention to the cleaning and anti-rust treatment of the excavator chassis, and to do the anti-rust treatment of the chassis.

4. Ignition start

On rainy days, if you run into problems where the engine is not easy to start, sometimes it will be weak even if you barely start it. The most likely cause of this problem is that the ignition system is leaking due to moisture, thus losing the normal ignition function.

Once the ignition system performance is found to be poor, the ignition performance is poor and the engine performance is degraded. It is best to wipe the inside and outside of the distribution plate and wire with a dry paper towel or a dry cloth, and then spray the desiccant with a special desiccant spray can. At the switchboard cover, battery connector, line connector, high voltage line, etc., the engine can be started after a period of time.

Excavator Lovers Need to Know How to Maintain The Excavator

The purpose of regular maintenance of the excavator is to reduce the failure of the excavator, shorten the downtime of the excavator, extend the service life of the excavator, and improve the working efficiency of the excavator. According to scientific statistics, as long as the fuel, other oil, water and air inside the excavator are managed, it can reduce the failure by 70%. After all, the failure of many excavators is due to the lack of regular maintenance.

1. Fuel management

Different types of diesel oil should be selected according to different working environment temperatures. Try to choose high-quality diesel. The high content of paraffin and sulfur in inferior diesel will cause damage to the engine of the excavator. It is important to note that diesel cannot be mixed with impurities such as dust and water, which would otherwise cause severe wear on the fuel pump. After the daily operation, the fuel tank should be filled with fuel to prevent water droplets from forming on the inner wall of the tank. Open the drain valve at the bottom of the fuel tank before the daily work. After the engine fuel is exhausted or the filter element is replaced, the air in the lane must be drained.

2. Management of lubricating oil

The use of lubricating oil can reduce the wear on the surface of the excavator components during exercise and prevent noise. Do not mix dust, sand, water and other impurities when storing the lubricant. When filling the lubricating oil, try to clean all the old oil to prevent the impurities from sticking.

3. Management of other oils

Other oils include engine oil, hydraulic oil, gear oil, etc. The oils of different models cannot be mixed. Different types of excavator oils are added with different additives in the production process. It is necessary to ensure oil cleaning and prevent debris (water, Dust, granules, etc. are mixed in, and the type of oil is selected according to the ambient temperature and use. The viscosity of the gear oil is relatively large to accommodate large transmission loads, and the viscosity of the hydraulic oil is relatively small to reduce the resistance to liquid flow. If the ambient temperature is high, oil with high viscosity should be used. For low ambient temperature, oil with low viscosity should be used.

4. Filter maintenance

The filter element acts as a filter to filter impurities in the oil path or the gas path, preventing it from invading the inside of the system and causing malfunction. Various filter elements should be replaced periodically according to the requirements in the operation and maintenance manual. When replacing the filter element, it should be checked whether metal particles are attached to the old one. On the filter element, if there are metal particles found, it is necessary to find the cause and take corresponding measures. The use of high-quality filter elements that meet the requirements of the excavator, the poor filter capacity of the inferior filter element will seriously affect the normal use of the excavator, which may cause serious consequences, and will not be worth the candle.

5. Regular maintenance

Every 100H maintenance project

Check the oil level in the swing mechanism box, the water and sediment discharged from the fuel tank, the boom cylinder pin shaft, the boom pin, the boom cylinder rod end, the arm cylinder pin shaft, the boom , stick connecting pin, stick cylinder rod end, bucket cylinder head pin shaft, half rod connecting rod connecting rod, stick rod, bucket cylinder rod end, bucket cylinder head pin shaft, stick connecting rod Connecting pin.

Every 250H maintenance project

Check the tension of the fan belt, check the tension of the air conditioner compressor belt, check the oil level in the final gearbox, check the battery electrolyte, replace the oil in the engine oil sump, replace the engine filter, and lubricate the slewing ring.

Every 500H maintenance project

At the same time, every 100 and 250H maintenance items, replace the fuel filter, clean the air filter inside and outside the air conditioner system, replace the hydraulic oil vent filter, check the height of the rotary pinion lubricant, check and clean the radiator fin, oil cooling Heat sink and cold heat sink, replace the hydraulic oil filter and replace the oil in the final gearbox.

Maintenance items per 1000h

At the same time, every 100, 250 and 500h maintenance items, replace the oil in the swing mechanism box, check the oil level of the damper housing (return oil), check all the fasteners of the turbocharger, check the turbocharger rotor The clearance, the inspection and replacement of the tension of the generator belt, the replacement of the anti-corrosion filter, and the replacement of the oil in the final transmission.

Maintenance items every 2000h

First complete every 100, 250, 500 and 1000h maintenance items, clean the hydraulic tank filter, clean, check the turbocharger, check the generator, start the motor, check the engine valve clearance, check the shock absorber.

6. Excavator maintenance for not used for a long time

When the excavator is stored for a long time, the whole machine should be washed and dried before being stored in a dry indoor environment. If it is limited to outdoor conditions, the machine should be parked on a well-drained concrete floor. Full fuel tank, lubricate all parts, replace hydraulic oil and oil. Start the engine once a month and operate the machine.