The excavator is on strike and cannot be started? These tips can help you solve it quickly
Posted: Mar 11th, '25, 04:00
For the masters who often fight on the front line of construction, mechanical failure is undoubtedly a big worry. However, some minor faults can actually be easily eliminated by themselves. Reserve some emergency knowledge in advance, which can come in handy at critical moments. Today, the excavator parts manufacturer will analyze in detail the problems frequently encountered by excavator drivers - [Causes and solutions for the failure of excavator to start].
There are two main situations in which the excavator cannot start, namely long-term inability to start and temporary inability to start. If you encounter a long-term inability to start, especially in the cold winter, it means that your excavator is likely to have to "see a doctor". In this case, it may be that the valve is leaking, or the piston ring gap is too large, resulting in insufficient compression temperature, of course, there may be other reasons. In short, this situation requires a professional maintenance master to deal with it. But if it cannot start temporarily, for example, it has been working normally before, but suddenly it cannot start, or it fails to start again after just stopping the operation, in the face of such situations, we can check the root cause of the problem by ourselves. When checking, first check whether the power is connected, and then check whether the fuel is sufficient and whether the pipeline is blocked.
When troubleshooting "[reasons why the excavator cannot start]", you need to start from the following key aspects:
1. Start the switch, no sound means no power
Excavator parts manufacturers remind that at this time, you should check whether the battery pile head has poor contact or burns out. For some models, you must first confirm whether the hydraulic main switch is in a locked state. Because many models cannot be started when the hydraulic main switch is not turned on. This is an important step in troubleshooting "[excavator start-up fault troubleshooting]".
2. The start switch is on, but the speed is slow and the sound is weak
This phenomenon indicates that the battery power is insufficient. Excavator parts manufacturers recommend checking whether the generator belt is normal. If conditions permit, it is best to measure the power generation. If all checks are normal, generally speaking, you need to contact a professional repairman. After all, power problems may involve more complex circuit systems, and professionals are more reliable.
3. The starter motor speed and sound are normal, but it cannot be started
This means that the fuel has not reached the corresponding position. It is recommended to clean the diesel pipeline to see if it is blocked. The small filter at the bottom of the diesel tank and the hand oil pump are two parts that are very easy to clog. In addition, it is possible that air was mixed in when the filter element was replaced. In this case, just loosen the exhaust screw and use the hand oil pump to pump oil to remove the air and solve the problem of "[What to do if the excavator cannot start]".
4. Cold car is easy to start, hot car is difficult to start
Different from conventional cognition, this situation is that the excavator is easy to start in the morning or when the temperature is low, but when the water temperature of the machine rises to a certain level, it will not be successful to turn off the engine and restart it. It is necessary to wait until the machine cools down before starting again.
After troubleshooting and processing, if the excavator is finally started successfully, if it is found that there is no movement, after eliminating the hydraulic problem, there are two other reasons in principle that may cause this phenomenon.
First, the rubber block connecting the engine and the hydraulic pump is broken, so that the rotation of the engine main shaft cannot be transmitted to the hydraulic pump. However, the probability of this failure is relatively low.
Second, the hydraulic master switch fails. There are usually two designs for the hydraulic master switch of an excavator. One is directly controlled by hydraulic components, and the other is controlled by electronic components. Currently, most of them are controlled by electronic components, but because of this, they are more likely to malfunction and fail.
There are two main situations in which the excavator cannot start, namely long-term inability to start and temporary inability to start. If you encounter a long-term inability to start, especially in the cold winter, it means that your excavator is likely to have to "see a doctor". In this case, it may be that the valve is leaking, or the piston ring gap is too large, resulting in insufficient compression temperature, of course, there may be other reasons. In short, this situation requires a professional maintenance master to deal with it. But if it cannot start temporarily, for example, it has been working normally before, but suddenly it cannot start, or it fails to start again after just stopping the operation, in the face of such situations, we can check the root cause of the problem by ourselves. When checking, first check whether the power is connected, and then check whether the fuel is sufficient and whether the pipeline is blocked.
When troubleshooting "[reasons why the excavator cannot start]", you need to start from the following key aspects:
1. Start the switch, no sound means no power
Excavator parts manufacturers remind that at this time, you should check whether the battery pile head has poor contact or burns out. For some models, you must first confirm whether the hydraulic main switch is in a locked state. Because many models cannot be started when the hydraulic main switch is not turned on. This is an important step in troubleshooting "[excavator start-up fault troubleshooting]".
2. The start switch is on, but the speed is slow and the sound is weak
This phenomenon indicates that the battery power is insufficient. Excavator parts manufacturers recommend checking whether the generator belt is normal. If conditions permit, it is best to measure the power generation. If all checks are normal, generally speaking, you need to contact a professional repairman. After all, power problems may involve more complex circuit systems, and professionals are more reliable.
3. The starter motor speed and sound are normal, but it cannot be started
This means that the fuel has not reached the corresponding position. It is recommended to clean the diesel pipeline to see if it is blocked. The small filter at the bottom of the diesel tank and the hand oil pump are two parts that are very easy to clog. In addition, it is possible that air was mixed in when the filter element was replaced. In this case, just loosen the exhaust screw and use the hand oil pump to pump oil to remove the air and solve the problem of "[What to do if the excavator cannot start]".
4. Cold car is easy to start, hot car is difficult to start
Different from conventional cognition, this situation is that the excavator is easy to start in the morning or when the temperature is low, but when the water temperature of the machine rises to a certain level, it will not be successful to turn off the engine and restart it. It is necessary to wait until the machine cools down before starting again.
After troubleshooting and processing, if the excavator is finally started successfully, if it is found that there is no movement, after eliminating the hydraulic problem, there are two other reasons in principle that may cause this phenomenon.
First, the rubber block connecting the engine and the hydraulic pump is broken, so that the rotation of the engine main shaft cannot be transmitted to the hydraulic pump. However, the probability of this failure is relatively low.
Second, the hydraulic master switch fails. There are usually two designs for the hydraulic master switch of an excavator. One is directly controlled by hydraulic components, and the other is controlled by electronic components. Currently, most of them are controlled by electronic components, but because of this, they are more likely to malfunction and fail.