Maintenance of hydraulic system of excavator

Maintenance of hydraulic system of excavator

Importance of hydraulic system maintenance of excavator:
Excavator in daily use may encounter a few problems, big trouble, a lot of master excavators after the fault problems often are consulting excavator repair shops, spend a lot of breakdown maintenance cost, in fact, if master excavators in daily excavator excavator operation can conduct routine maintenance can be deep extent avoid the occurrence of these faults.

1. Firstly, the proper hydraulic oil of excavator should be selected for the maintenance of the hydraulic system of excavator.

Hydraulic oil of excavator is particularly important for excavators. Hydraulic oil plays the role of lubrication, cooling and sealing in excavators. Therefore, the selection of appropriate hydraulic oil of excavators is something that excavators must know.
When selecting the hydraulic oil of excavator, it must be selected according to the requirements of the specification. If the substitute oil is used under special circumstances, it should also be selected with the performance of the original hydraulic oil. The above two points can effectively prevent the hydraulic system failure of the excavator
In addition, the discolored hydraulic oil is not available.

2. maintenance method of hydraulic system of excavator "prevent impurities from entering hydraulic system when oil is used"

If impurities enter the hydraulic system during the oil change process of the excavator, it may cause the internal parts of the hydraulic system to pull, get stuck or the oil channel is blocked, etc.
Therefore, what is involved in the replacement process of excavator: the working clothes, refueling tools, and the environment when changing oil should be strictly in accordance with the instructions.

3 maintenance method of excavator hydraulic system "cleaning of excavator hydraulic system"

The same hydraulic oil should be used when cleaning the hydraulic system of the excavator, and the temperature of the hydraulic oil generator set should be 45 to 80 degrees, and the hydraulic oil should be cleaned more than three times. After cleaning, the hydraulic oil should be released, and the filter and filter core should be cleaned, and then the new oil should be added.
Please note in the process of refueling:
To prevent air from entering the hydraulic system, if air enters the hydraulic system, it may cause the pump to suck up air, which will cause cavitation and reduce the working efficiency of the excavator. Therefore, attention should be paid to the oil change.
.also keep water out of the hydraulic system. Water entry will lead to corrosion of hydraulic system components, oil emulsion deterioration, speed up mechanical wear. Therefore, the maintenance of the hydraulic system of excavator must pay attention to the need to replace the hydraulic oil can not have water.

4. Maintenance method of hydraulic system of excavator

Failure to operate the excavator according to the instruction will also cause the failure of the excavator.

5.Maintenance method of hydraulic system of excavator

A.After working for a new excavator for 250h, the fuel filter element and additional fuel filter element should be replaced; Check the clearance of the engine valve of the excavator.

B.Check, clean or replace the air filter element; Clean the inside of the cooling system; Inspect and tighten caterpillar plate bolts; Check and adjust the back tension of the track; Check the air intake heater of the excavator; Replace bucket teeth; Adjust the bucket clearance of excavator; Inspect front window cleaning liquid level; Inspecting and adjusting the air conditioning of excavator; Clean the floor of the driving room; Replace the breaker filter core (optional). When cleaning the inside of the cooling system, after fully cooling the generator, slowly unscrew the cover of the water injection, release the internal pressure of the water tank, and then release the water. Do not clean the engine when working, high-speed rotating fan will cause danger; When cleaning or replacing coolant, place the machine on the horizontal ground; The coolant and anticorrosion shall be replaced in accordance.

C.Check items before starting the engine.

Check the liquid level position height (water addition) of the excavator's cooling liquid; Check the oil level of excavator engine and add oil; Check the oil level of excavator (add fuel); Check v hydraulic oil level (add hydraulic oil); Check whether the air filter is blocked; Check electrical wiring; Check whether the horn is normal; Check the lubrication of the bucket; Check the water and sediment in the oil and water separator.

D.Every 100 maintenance items.

Excavating motor arm cylinder head pin shaft; Moving arm pin; Movable arm cylinder lever end; Cylinder head pin shaft; Connecting pin of moving arm and bucket bar; Cylinder stem end; Cylinder head pin shaft; Half link connecting pin; Bucket bar, bucket cylinder cylinder end; Cylinder head pin shaft; Bucket link connecting pin; Check the oil level in the rotary mechanism box (add oil); Discharge water and sediment from the fuel tank

E. Maintain the project every 250h.

Check the oil level in the final drive box of the excavator (add gear oil); Check battery electrolyte; Replace the oil in the engine oil sump, and replace the engine filter core; Lubrication swing bearing (2 points); Check the tension of the fan belt and the air conditioner compressor belt and adjust them.

F. Maintain the project every 500h.

Replace the oil filter element of the excavator; Check the height of the grease (add grease) for small gear turning; Inspect and clean the radiator fins, oil cooler fins and coolant fins of the excavator; Replace hydraulic oil filter element; Replace the oil in the final transmission box (only for the first time at 500h, once after 1000h); Cleaning the internal and external air filters of the digger air conditioner system; Replace the hydraulic oil vent filter element.

G. Maintain the project every 1000h.

Replace the oil in the rotary gear box of the excavator; Check the oil level of the shock absorber housing (return oil); Check all fasteners of the turbocharger; Check the clearance of the rotor of the turbocharger; Check and replace the tension of generator belt; Replace the anti-corrosion filter core; Replace the oil in the final transmission.

H. Maintenance project every 2000h.

Clean the hydraulic oil tank strainer; Clean and inspect the turbocharger; Check generator and start motor; Check engine valve clearance (and adjust); Check the shock absorber.