What you want to ask is why Lingong 150 excavator has generator abnormality? The SDLG 150 excavator shows that the generator is abnormal and the engine system is defective. Because when the generator of Lingong 150 excavator generates electricity, the power generation indicator light will have correct display. If the light indicates that the generator is abnormal, it means that the generator system is faulty. Therefore, the SDLG 150 excavator shows that the generator is abnormal and the engine system is faulty.
1. Little knowledge of daily maintenance of excavator
Little knowledge of daily maintenance of excavator 1. Knowledge of daily maintenance of excavator and detailed operation steps of excavator, please ask for help Daily maintenance of excavators In order to avoid breakdowns of excavators, great attention should be paid to the maintenance of excavators whentheir daily use.
Routine maintenance includes checking, cleaning or replacing the air filter element; cleaning the interior of the cooling system; checking and tightening the track plate bolts; checking and adjusting the rear of the track; tension ; checking the intake air heating machine; replacement of bucket teeth; adjusting the front window cleaning fluid level; cleaning the cabin floor; replacement of the circuit breaker filter element (optional accessory). When cleaning the inside of the cooling system, wait until the engine has completely cooled, then slowly loosen the water fill cap to release the pressure inside the water tank before draining the water. Do not clean while the engine is running, as the pressure is high; -the high-speed rotating fanwill cause danger when cleaning or replacing the cooling system. When using liquid, the machine must be parked on level ground.
At the same time, before starting the engine, you need to check the coolant level (add water); check engine oil level and add engine oil; (add fuel); check hydraulic oil level (add hydraulic oil); check if the air filter is blocked; check if the horn is normal; check the oil for water and sediment; -water separator.
2. Daily maintenance methods of excavators
(1) Maintenance levels and elements of excavators
The maintenance levels of excavators include four levels. : shift maintenance (daily), first level maintenance (performed every 100 working hours), second level maintenance (performed every 400 hourswork) and third level maintenance (performed every 1,200 work hours). Added to this are special maintenances, such as maintenance during the running-in period, seasonal maintenance, long-term non-use maintenance, etc. The maintenance levels and maintenance items of the excavator are shown in Table 2-1.
Table 2-1 Excavator maintenance levels and maintenance items
Table 2-1 Maintenance levels and items Excavator Maintenance Levels Maintenance Items (Continued)-1
Table 2-1 Excavator Maintenance Levels and Maintenance Items (Continued)-2
< p > (2) Oil filter maintenance
①The oil filter is a very important component. It can prevent impurities from entering important devices of oil and gas pipelines, thereby reducing breakdowns. Oil filters need to be replacedregularly if necessary. When using the excavator in harsh conditions, the replacement cycle should be shortened depending on the quality of the diesel (sulfur content) used.
②Do not clean the oil filter (cylindrical) and reuse it. The oil filter must be replaced with a new one.
③When replacing the old oil filter, you should check whether there are metal particles, rubber debris, etc. in it. adsorbed on the old filter element. If metal or rubber particles are detected, please seek professional inspection and treatment.
④ Before using the oil filter, do not open the box prematurely.
(3) Maintenance of electrical equipment
① If the wires are wet or the insulation is damaged , the electrical system This will leak electricity and may cause a malfunctionoperation of the machine or other accidents.
② Check the fan belt for tension, damage and wear, and the battery electrolyte level.
③Do not disassemble or disassemble any electrical components installed on the machine.
④Fake and substandard electrical components that do not meet the requirements should not be installed.
⑤ When cleaning the machine or working on rainy days, do not expose the electrical system to water.
⑥When working on the beach, the electrical system should be carefully cleaned to avoid corrosion.
⑦ When installing an air cooler or other electrical equipment, it must be connected to an independent power connector. The selected power source should never be connected to a fuse, starter switch or battery relaye.
(4) Hydraulic system maintenance
During operation and immediately after operation, the oil temperature hydraulic is still very high. . Therefore, special precautions must be taken when inspecting and maintaining hydraulic systems.
① Place the machine on level ground, lower the bucket to the ground, then release the pressure from the hydraulic line.
②Stop the engine and wait for the oil temperature to drop before performing maintenance. Even if the oil temperature drops, there is still pressure inside the system. When inspecting and maintaining the hydraulic system, in order to release the pressure inside the system, air must be exhausted from the hydraulic tank.
③ Check the hydraulic oil level regularly, replace the oil filter and add hydraulic oil.
④After disassembling the high pressure pipe, check whether the O-ring or seal is damaged. If it is damaged, it must be replaced.
⑤ After cleaning or replacing the hydraulic oil filter element and screen, or after disassembling the hydraulic pipeline, the air in the oil line must be evacuated.
⑥ There is high pressure nitrogen in the accumulator. Improper use is quite dangerous. It must be used in strict accordance with regulations.
3. Excavator maintenance knowledge
① The fuel filter element and supplementary fuel filter element should be replaced after the new engine has been running for 250 hours ; check engine valve clearance.
② Daily maintenance; check, clean or replace the air filter; clean the inside of the cooling system; check and tighten the plate boltscaterpillar; tension ; check air inlet heater; replace bucket teeth; adjust the front window cleaning fluid level; clean the cabin filter floor; When cleaning the inside of the cooling system, wait until the engine has completely cooled, then slowly loosen the water fill cap to release the pressure inside the water tank before draining the water. Do not clean while the engine is running, as the pressure is high; -high-speed rotating fan will cause danger; when cleaning or replacing the cooling system. When cooling, the machine should be parked on a level ground and the anti-corrosion device should be replaced according to Table 3;
The antifreeze/water ratio meets the requirements of Table 4. Coolant type Cooling system internal cleaning and replacement cycle Cycthe replacement of the anti-corrosion device Antifreeze AF-ACL (super antifreeze) Every 2 years or every 4,000 h Every 1,000 h or when replacing the coolant Antifreeze AF-PTL (long-life antifreeze) Every year Or 2,000 h AF-PT antifreeze (winter type) every 6 months (added only in autumn) Table 4 Antifreeze and water mixing ratio Ambient temperature °C/capacity L -5 -10 -15 -20 -25 -30 PC200 antifreeze 5.1 6.7 8.0 9.1 10.2 11.10 PC220 5.4 7.0 8.4 9.6 10.7 11.65 Water PC200 17.1 15.5 14.2 13, 1 12.0 11.10 PC220 17.9 16.3 14.9 13.7 12.6 11.65③Inspection items before starting the engine.
Check the coolant level (add water); check the engine oil level and add engine oil; check fuel level (add fuel); oil) ; check if the air filter is clogged; check the wires; check if the horn is normal; check for water and sediment in the oil-e separatorAt. ④All 100 maintenance items.
Arrow breech pin; boom foot pin; arm cylinder rod end; boom and arm connection pin; ; half-connecting rod connecting pin; end of bucket rod and bucket cylinder; bucket rod connecting pin; check the orientation mechanism. Oil level in tank (add engine oil); and fuel tank sediment. ⑤Maintenance items every 250 hours.
Check the oil level in the final gearbox (add gear oil); check the battery electrolyte; replace the oil in the engine oil pan, replace the engine filter element; the slewing bearing (2 locations); check fan belt tension and check air conditioning compressionCheck machine belt tension andmake the settings. ⑥Maintenance items every 500 hours.
Carry out maintenance operations every 100 and 250 hours at the same time; replace fuel filter element; check the rotating gear grease height (add grease, check and clean); radiator fins and oil cooler radiator and air conditioner radiator; replace hydraulic oil filter element; replace the oil in the final transmission case (only every 500 hours for the first time, and once every 1000 hours in the future); and outside the air conditioning system; replace the hydraulic oil ventilation filter. ⑦Maintenance items every 1000 hours.
At the same time, carry out maintenance operations every 100, 250 and 500 hours; replace the oil in the slewing mechanism housing; check the oil level in the shock absorber housing (return);oil); check the turbocharger All compressor fasteners; check the turbocharger rotor clearance; check and replace generator belt tension; replace the anti-corrosion filter element; replace the oil in the final transmission case; ⑧Maintenance items every 2000 hours.
First perform maintenance items every 100, 250, 500 and 1000 hours; clean the hydraulic tank filter; clean and check the turbocharger, check the generator and starter; check the engine valve; play (and adjustment); check the shock absorbers. ⑨Maintenance for more than 4000 hours.
Increase inspection of water pumps every 4000 hours; increase hydraulic oil replacement every 5000h; ⑩Long-term storage.
When the machine is stored for a long time, in order to avoid rusting of the hydraulic cylinder piston rod, the deviceworking tif must be placed on the ground; be washed and dried before storing in a dry indoor environment; If conditions require that it can only be stored outdoors, the machine should be parked on a cement floor with good drainage before storage, lubricate all parts, replace the hydraulic system; oil and engine oil, and coat the exposed metal surface of the piston rod of the hydraulic cylinder with a thin layer of butter, remove the negative terminal of the battery, or remove the battery and store it separately, add an appropriate proportion of cooling antifreeze; water according to the lowest ambient temperature; Start the engine once a month and run the machine to lubricate moving parts. At the same time, charge the battery and run it for 5-10 minutes.