This is the biggest expense in repairing an excavator.

The details that you need to pay attention to during the maintenance process are far more than what you know. If the safety awareness is not in place, many safety accidents can occur!

In fact, these maintenance accidents can be completely avoided! This requires everyone not only to master skilled maintenance techniques, but also to be familiar with the following maintenance experience. Let's take a look!

The engine should be turned off for inspection and maintenance

Depending on different situations, sometimes the engine must be turned off for maintenance, but it is not ruled out that some inspections must start the engine. At this time, in addition to placing the safety lock lever in the locked position, two experienced people are required to cooperate.

One of them is responsible for maintenance, and the other needs to be ready to turn off the engine at any time in the driver's seat. Only in this way can close cooperation ensure rapid maintenance while ensuring personnel safety.

Replace or add oil

Whether it is replacing hydraulic oil or engine oil, the first point is to avoid places with large dust and sand. The whole process must ensure that the oil is clean and not contaminated. If there is splashed oil, it should be wiped clean in time. Be careful not to use diesel to clean parts. Tighten the fuel cap after the replacement.

Check chassis parts

Safety accidents are particularly prone to occur when replacing or repairing slewing mechanisms and chassis parts. Imagine if an excavator weighing dozens of tons overturns or rolls over, the consequences can be imagined.

Therefore, when you lift up the machine to check the bottom, the angle of the boom and the dipper should be kept at 90°-110°, then lower the bucket so that the bottom is facing down, prop up the machine, and then support the machine with a safe bracket.

excavator Release internal pressure

Under normal circumstances, there is a lot of pressure in each hydraulic oil pipe, so before releasing the internal pressure, do not add oil, drain oil, or perform maintenance and inspection to avoid unnecessary losses.

excavator Prevent burns

During summer construction, high engine temperature has always been a problem that bothers everyone, especially when encountering a boiling situation, and many machine friends have been scalded on their faces and arms by rashly checking.

Therefore, everyone must remember that when the engine is just stopped, the engine coolant and the oil in various components and pipelines are still in a high temperature and high pressure state. At this time, it is particularly easy to get burned if you open the lid to drain water, drain oil or replace the filter element. Therefore, it is necessary to wait until the temperature drops before inspection or maintenance.

excavator Adjusting the track

When adjusting the tightness of the track, be careful with high-pressure butter. There is high-pressure butter in the tensioning cylinder. If the screw plug or grease nozzle is loose, the high-pressure butter will spray out, causing damage or casualties.

Therefore, when loosening the drain plug counterclockwise, it must not exceed one circle. It is forbidden to face the drain plug or grease nozzle with your face, hands, feet or other parts of the body.

excavator Repairing the circuit

Maintaining the circuit can easily cause a short circuit and other situations that may cause a fire. Therefore, in addition to cleaning and tightening all electrical parts frequently, you should also check whether the wires are loose, aged, or cracked. In addition, aged wires or lost terminal covers must be replaced or supplemented in time.

Replace the blown fuse with a fuse of the same capacity. Do not replace it with a fuse of a larger capacity, and do not use thin copper wire.

It is true that repairing excavators is a technical job, but it is also a dangerous technical job. We often hear about or experience people being injured by the bucket, scalded when draining water, or even causing fires when repairing circuits.

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