General fault diagnosis and maintenance

Fault type

NO.

fault phenomenon

Analysis of causes

Disposal method

Enginery

1

Excavator action abnormal sound

Inadequate grease injection

Injection grease

2

Drop the track while walking

Insufficient tightening of crawler belt

Adjust the crawler rise tightening volume

Hydraulic class

1

The machine is slow and weak

In low temperatures, the hydraulic oil is relatively viscous

Low-speed operation of the machinery, gradually heating up

2

In high temperature weather, the hydraulic oil leakage is seriou

Replace the high-viscosity hydraulic oil or stop it for cooling

3

In the normal environment, the hydraulic system pressure is low

Adjust the hydraulic system pressure

4

Low hydraulic system flow under normal environment

Check and replace the hydraulic pump

5

Hydraulic oil less

Check and replenish the hydraulic oil

Engine

1

The engine cannot start or emit black smoke

Lack of fuel

Check and add the fuel oil

2

Battery loss

Replace the storage battery or use the external battery

3

Power line loose

Check the power cord and repair it

4

Engine failure

Replace the engine

5

Air intake blockage

Check and clean up or replace the air filter element

Transportation and placement

When hoisting the machine, the ceiling should be removed, and the bulldozer should be placed under the counterweight. Both ends of the bulldozer should be used as lifting points, and there should be a lifting hole at the earplate of the oil cylinder on the top of the boom, and the force should be lifted at three points.