How to Deal with an Excavator's Inability to Start a Fire

Ways to solve the problem of excavator fire failure

Difficulty starting the excavator is also known as "the excavator cannot start" , “the excavator has difficulty starting”, “the excavator cannot start”, “Digging The engine does not start.” This means that before the excavator starts working, when the key is turned on and the excavator is started, there will be no sign of the excavator starting to catch fire. Below I will share with you how to deal with the shovel not catching fire. I hope this is helpful to everyone!

When the excavator is working If the excavator does not restart after a flameout suddenly, this is usually due to a fault in the oil pump or oil nozzle of the excavator. A common solution is to pour cold water over the oil pump. If the startup is smooth, there is a problem with theoil pump and you need to calibrate the oil pump and check the oil nozzle. If the startup is not smooth, you need to do step-by-step troubleshooting based on the causes of the cold. difficulty starting the car mentioned above.

Difficulty starting the excavator when it is cold means that the excavator cannot start when it is cold and there is no sign of starting. The reasons for failure are:

① Incompatible fuel is used. Different fuels should be selected according to different working conditions for excavator work. For example, diesel with higher viscosity should be used in winter and diesel with it. higher viscosity should be used in summer.

②The excavator battery is insufficient or the battery circuit connector is loose.

③The engine cylinder pressureof the shovel is insufficient and the engine valve is not closed properly.

④The excavator solenoid valve is defective.

⑤ The excavator fuel injection pump does not inject enough fuel. Normally, after the excavator is parked, the fuel in the fuel injection pump will flow back to the fuel tank and there will be no fuel left in the tank. fuel injection pump, resulting in a hard-to-start failure.

⑥Fuel system failure.

⑦The matching gap between the engine cylinder liner and the piston is too large, and the valve timing mechanism leaks seriously.

⑧The diesel pump piston is worn or the oil distribution valve spring is cracked.

⑨Circuit problem, debug motor is damaged.

⑩ In addition, it is easy to have difficulty starting the excavator when working in winter. Therefore, it is generalIt is necessary to preheat the excavator in advance when working in winter if the excavator still cannot start. After using the preheating function, you can use the engine fluid spray method to solve the problem, but you cannot use more engine fluid. If the generator fails, the starter fails.

1. Check if it is caused by a circuit failure. The fault manifests itself by a lack of response when the ignition switch is turned on or by an engine starting speed that is too low.

2. Routine maintenance and inspection are very important. Check the excavator battery power frequently. If the battery power is low, please charge it in time.

3. Check if there is enough oil in the fuel tank. Of course, if there is no oil, elIt will not ignite and sufficient fuel must be added in time.

4. Check for a short circuit or open circuit in the start relay or machine relay circuit.

5. Check if the excavator generator is damaged. Of course, if it can't get electricity, it won't start a fire.

6. Consider choosing hydraulic oil with different viscosities depending on the ambient temperature.

7. Check the battery wiring harness, flameout solenoid valve, diesel pump, fuel system, etc.

8. Check if the excavator ignition switch is in poor contact.

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

Maintenancedaily life of excavators In order to avoid breakdowns of excavators, great attention should be paid to the maintenance of excavators during 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 reservoirof water 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 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. : maintenance by team (quotidienne), first level maintenance (performed every 100 working hours), second level maintenance (performed every 400 working hours) and third level maintenance (performed every 1,200 working 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

①The oil filter is a very important component. It can prevent impuritiesto penetrate important devices of oil and gas pipelines, thereby reducing breakdowns. The oil filter should be replaced regularly if necessary. existWhen 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 Ifthe wires are wet or the insulation is damaged, the electrical system will leak electricity and may cause machine malfunction 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 a power connector.we are independent. The selected power source should never be connected to a fuse, starter switch or battery relay.

(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.

④ After 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

①NewThe fuel filter element and supplementary fuel filter element should be replaced after 250 hours of engine operation; check the engine valve clearance;

② Daily maintenance; check, netclean or replace the air filter; clean the inside of the cooling system; check and tighten track plate bolts; 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 complies with erequirements in Table 4. Coolant type Cooling system internal cleaning and replacement cycle Anti-corrosion device replacement cycle AF-ACL antifreeze (super antifreeze) Every 2 years or every 4000 hrs Every 1000 hrs or when replacing the coolant AF-PTL antifreeze (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 Antifreeze PC200 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 fiair filter is clogged; check the wires; check if the horn is normal; check for water and sediment in the oil-water separator. 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 thefan belt tension and check air conditioning compressor leatherBelt tension and adjustments. 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 inthe slewing mechanism housing; check the oil level of 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 pFor a long time, in order to avoid rusting of the piston rod of the hydraulic cylinder, the working device should 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; turn on the air conditioner and run it for 5 to10 minutes.