Why is my Zoomlion Construction Equipment hydraulic pump making unusual noises?
- VvgarciaAug 27, 2025
Unusual noises from the hydraulic pump in your Zoomlion Construction Equipment can stem from various causes. The fluid level in the hydraulic tank might be too low, so add hydraulic oil. Air in the suction union could be another reason, in which case you should repair the seal ring. Check for loose mounting bolts and tighten them. Old or dirty hydraulic oil can also cause this issue, so replace the oil and filter element. Other potential causes include a shaken drive shaft, a worn universal joint, or a defective hydraulic pump; repair or replace these components as needed.








