In construction and material handling, hydraulic grab are essential for moving bulk materials. Their complex hydraulic systems enable powerful gripping, but lack of maintenance leads to performance decline and costly breakdowns. This guide offers practical tips to keep your hydraulic grabs efficient, durable, and safe.

1. Daily Pre-Operational Checks

Start each workday by visually inspecting the grab. Check the body for cracks, especially at welds and joints. Examine hydraulic hoses for leaks, abrasions, and ensure the fluid level is within the recommended range to avoid cavitation. Test the grab’s opening and closing cycles; unusual noises like grinding indicate potential issues. If any problems are found, don’t use the grab and seek professional help immediately.

2. Hydraulic System Maintenance

Fluid Management

Regularly sample hydraulic fluid for contamination and replace it per the manufacturer’s schedule. Monitor fluid temperature to prevent seal damage; high temperatures may signal clogged filters or overloading.

Filter Maintenance

  • Suction Filters: Clean or replace regularly to protect the pump from large contaminants.
  • Return Filters: Replace as recommended to keep the fluid clean.
  • Pressure Filters: Monitor pressure differential and replace when it exceeds the limit.

Component Inspection

Check pumps, motors, valves, and cylinders for wear, leaks, or malfunction. Ensure cylinders move smoothly and components meet manufacturer specifications.

3. Structural Maintenance

Wear Assessment

Inspect teeth, edges, joints, and welds regularly. Replace worn teeth promptly, lubricate joints to reduce friction, and repair any defective welds.

Corrosion Prevention

Apply protective coatings to the grab’s surface and use cathodic protection in marine environments to prevent rust.

4. Storage and Winterization

When idle, clean the grab thoroughly, lubricate moving parts, and cover it. In cold climates, drain hydraulic fluid or add antifreeze, and remove the battery to prevent freezing.

5. Professional Servicing

Schedule annual professional checks by qualified technicians. They’ll conduct comprehensive inspections, analyze fluid quality, replace worn parts, calibrate the system, and ensure safety compliance.
By following these steps—daily checks, hydraulic system upkeep, structural care, proper storage, and professional servicing—you can maximize your hydraulic grab’s lifespan and performance. For more guidance, contact our expert team to keep your equipment running at its best.