10 Excavator Fault Self-Inspection Methods

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10 Excavator Fault Self-Inspection Methods

1. There is oil in the water tank

① The oil cooler core is split.

② The water seal of the pump is destroyed and the drainage hole is blocked.

③ The cylinder cushion is damaged.

 

2. There is coolant in the bottom of the oil

① The oil cooler core is split.

② The cylinder cushion is broken.

③ There are cracks in the cylinder head or cylinder block.

 

3. Low oil pressure

① Lack of oil.

② diesel oil, coolant.

③ The oil filter element is obstructed.

④ oil pump suction tubing disclosed.

⑤ oil safety valve (bypass) stuck in the overflow form or spring break.

⑥ The oil pump is worn.

⑦ The clearance between the crankshaft or camshaft and the bearing bush is outstanding

 

4. The water temperature is too high

① Small coolant capacity.

② The thermostat is destroyed.

③ Loose belt, low fan speed.

④ The pump is damaged.

⑤ Overload operation of advocacy machine

⑥ Water tank internal or external infarction.

 

5. Generator not charging

① Battery damaged.

② charging circuit or grounding circuit fault.

③ advocating mechanical and electrical brush wear.

④ Regulator or rectifier secondary pipe damage.

⑤ The rotor (excitation coil) is damaged.

 

6. The hydraulic pipe shivers, the hydraulic pump is loud

① There is an atmosphere in the hydraulic pump.

② wear of the swash plate or plunger slipper in the hydraulic pump.

 

7. Walking wandering

① improper tuning of crawler tensification.

② the corresponding walking motor leakage, or reducer damage.

③ The hydraulic pump internal leakage, small flow.

④ walking control pilot circuit fault, or walking main circuit fault.

⑤ The center rotary comment inside the oil seal damage, string oil.

 

8. Slow walking speed

① The pilot control oil circuit or main oil circuit component faults.

② The pilot pump or hydraulic pump fault.

③ The oil seal in the center rotation is damaged and the oil is in string.

 

9. Walking and climbing inability, lack of digging power

① The main circuit, pilot circuit safety valve fault, low pressure.

② the corresponding safety relief valve, balance valve, buffer valve and other problems.

③ The hydraulic pump, pilot pump and hold valve internal leakage.

 

10. Electrical function of a certain circuit is not available

① The corresponding fuse is damaged.

② The circuit element is damaged or the conductor is faulty.

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