In tunnel boring and underground construction, the A8VO160 hydraulic main pump is frequently exposed to high load, dust, and moisture. To ensure long-term stable performance, follow these five key maintenance strategies:

1. Replace Seals Regularly

Tunnel operations often involve continuous work in humid environments that accelerate seal wear. It is recommended to replace OEM-grade seal kits every 1,000 working hours.

2. Use Wear-Resistant and Anti-Corrosive Components

Mixed mud, water, and dust can cause accelerated wear to valve plates, pistons, and drive shafts. Choose Rexroth original or premium aftermarket parts with surface treatments for better durability.

3. Keep the Hydraulic System Clean

Regularly clean the hydraulic oil tank, replace high-efficiency filters, and prevent debris from damaging the internal structure of the pump.

4. Avoid Frequent Start-Stop and Cold Starts

Tunnels often have drastic temperature changes between day and night. Cold oil in early hours can increase wear—preheat the oil before startup when necessary.

5. Implement Real-Time Monitoring

Install pressure and temperature sensors to track the operating condition of the pump. If abnormal noise or pressure drops occur, shut down the machine for inspection immediately.