Excavator Unilateral Walking Weak? How To Solve It?

Have you ever encountered unilateral walking weakness when driving an excavator? What causes this? Let's analyze it!

Common reasons for failure of excavator unilateral walking

1. unilateral pump displacement is small or damaged.

2. The rotary joint is leaking.

3. The pilot pressure of the side travel motor is not enough, and the pedal valve is worn or oil return is not smooth.

4. The main control valve leakage or stuck.

5. The oil suction valve is faulty, and the two switch joints under the foot valve are inversely connected

Analysis of excavator unilateral walking weakness

1. First measure the hydraulic oil temperature? The excavator is weak when walking. Are other movements normal? It is suggested to check whether the plunger of the travel motor of the excavator is worn or not. Check whether the balance valve of the travel motor acts as a hairpin. And check whether there is abnormal sound of the excavator travel motor?

2. If the hydraulic oil temperature is detected to be high, the unilateral walking weakness of the excavator may be caused by excessive internal leakage or the walking spool hairpin of the main valve.

3. Disassemble the drain port of the motor and see whether the drain quantity on both sides is the same. If it's not the same, then there's a problem on the side with the big drain.

4. Check the pump pressure before and after the excavator? How much pressure is the engine under load? If the pump pressure before and after the specified value, it must be adjustedvExcavator | unilateral walking weak? How to solve it?

Have you ever encountered unilateral walking weakness when driving an excavator? What causes this? Let's analyze it!

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