Methods to troubleshoot the problem of slow excavator movement

Hydraulic Crawler Excavators are indispensable operating equipment in engineering project construction. Due to the impact of many factors such as long-term load operation and harsh construction environment, slow movement and lack of power will inevitably occur during construction. This is also a problem for many people. Problems that excavator operators will encounter in daily operations. So, how can you get rid of the sluggish performance of Crawler Excavators?

The slow movement of Large Excavators is mainly reflected in three aspects: slow single movement, slow movement of the entire vehicle, and slow movement of the warm-up engine. Let’s do a detailed analysis on these three issues:

1. Check whether the pressure of the relief valve of the relevant components of Excavator Spare Parts is too low;

2. Check whether the Hydraulic Main Pump, low pressure sensor, and multi-way valve are faulty;

3. Are there any faults in the relevant solenoid valves and valve cores?

Now that we know the problem, what exactly should we do?

✔First check whether the whole machine is maintained on time and whether the hydraulic oil is replaced on time; whether the hydraulic oil line is blocked, please check the system pressure at idle speed and check whether the oil return filter element is blocked;

✔The engine output power is too low and the power is insufficient. Please analyze the engine output based on DX data to see if all cylinders can work at the same time; check whether there is black smoke in the engine. If the fuel injector is severely worn, it will also cause the engine power to drop;

✔Hydraulic Main Pump output is insufficient, enter the service diagnostic system to perform related pressure tests;

✔Insufficient pilot pressure causes insufficient pressure to open the valve core, resulting in insufficient flow and slow movement;

✔To rule out whether there are circuit problems, you can check the excavator CPU, high and low pressure sensors, solenoid valves and line faults;

✔Check the oil in time to see if the oil is clean. If there is dirt, replace it immediately; check the oil inlet filter to see if there are copper shavings, which will cause wear and tear on the main pump and need to be disassembled and inspected.

According to the above-mentioned points, you can basically prescribe the right medicine according to the specific reasons for the slow movement of the excavator. If you haven't learned yet, you can contact us at +8615910016951, and we will professionally help you repair the machine.