How to Install Hydraulic Breaker Pipelines on Excavators — A Step‑by‑Step Guide from a Professional Chinese Factory

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Installing the hydraulic pipelines for an excavator breaker may seem challenging at first. Many operators think the job requires factory technicians, but in reality, with the correct method and attention to detail, you can complete the installation yourself. At Zhengzhou Hanyun Hydraulic Breaker Factory, a full‑chain hydraulic breaker manufacturer in China, we’ve summarized a simple yet professional installation process to help users save time and ensure reliable performance.

1️⃣ Preparation and Material Quality
The quality of the pipeline directly affects the stability of the hydraulic breaker system. Hanyun uses high‑grade seamless fluid pipes produced by large industrial suppliers. All pipes are gas‑shield welded, acid‑cleaned, phosphated, and sprayed with original excavator‑color paint. This process prevents corrosion, increases durability, and ensures the inner wall remains smooth for efficient oil flow.

Before starting installation, clean every hose and fitting, check for burrs or slag, and confirm that oil passages are unobstructed. Proper preparation will reduce contamination and extend the hydraulic breaker’s service life.

2️⃣ Installing the Pilot Foot Control Valve
Locate a suitable position around the operator’s pedal area. Some excavators have pre‑drilled holes; if not, select a comfortable spot according to leg length and accessibility. Drill or cut the mounting holes and bolt the pilot foot valve securely. The valve is typically marked as P (inlet pressure line), T (return line), and A (control line).

Next, find the pilot oil source valve block on the excavator. Connect the valve’s P and T ports to the corresponding points on the block using tee fittings. The A port should lead to the front end of the breaker valve block, which controls oil flow to the hydraulic hammer. If the valve block’s rear return path is closed, add a return‑oil line to T to prevent back‑pressure and ensure the spool moves easily.

How to Install Hydraulic Breaker Pipelines on Excavators — A Step‑by‑Step Guide from a Professional Chinese Factory

3️⃣ Connecting the Breaker Oil Circuit to the Main Control Valve
On the excavator’s multi‑way valve, locate the spare breaker valve block. Usually, the red port (A) indicates the control‑oil input, and the opposite side (T) is the return‑oil port. Remove the plugs carefully — the front port connects to the breaker’s main pressure line, while the rear port connects to the return line.

In some cases, if the return port is difficult to access, it is acceptable to route the line directly back to the hydraulic oil tank. This method is simpler and avoids additional fittings, though ensure the pipe angle allows smooth oil return without kinks.

4️⃣ Safety Checks and Testing
Once all lines are tightened, double‑check that the P and T positions are not reversed — incorrect connection can cause immediate system failure. Verify that all joints are sealed, then start the engine, operate the pilot pedal slightly, and check for leaks or abnormal vibration.

5️⃣ Maintenance Tips
After 10–20 hours of operation, re‑inspect all fittings and re‑torque loose joints. Keep pipes clean and avoid twisting during excavator movements to prolong hose life.

Proper hydraulic line installation ensures stable hammer performance, reduces oil leakage, and protects expensive components. Following correct procedure not only improves work efficiency but also helps you fully experience the power and durability of a Hanyun hydraulic breaker.