1. Pre-Installation Preparation
System Depressurization
（1）Ensure the hydraulic system is fully depressurized before connecting to prevent high-pressure oil spray hazards.
Cleaning & Inspection
（2）Thoroughly clean the pipe ends and fittings to remove oil, dirt, and debris.
（3）Check threads, seals, and O-rings for damage or deformation.
2. Proper Selection & Compatibility
Correct Sizing & Pressure Rating
（1）Ensure fittings match the pipe size and system pressure (e.g., 24° cone seals, JIC standards).
（2）Choose materials based on environment:
（3）Carbon steel (galvanized) for general use.
（4）Stainless steel (304/316) for corrosive conditions.
Seal Integrity
（1）Use high-quality O-rings and avoid twisting or damaging them during installation.
3. Installation Guidelines
Tightening & Torque
（1）Follow manufacturer-specified torque values to prevent leaks or thread damage.
（2）Avoid using improper tools (e.g., pliers) to tighten fittings.
Bending & Routing
（1）Maintain a minimum bend radius of 10× the hose diameter to prevent kinking.
（2）Protect steel tubing from abrasion with sleeves if necessary.
4. Maintenance & Inspection
Regular Checks
（1）Inspect for leaks, cracks, or swelling in hoses.
（2）Increase inspection frequency in high-temperature environments.
Replacement Criteria
（1）Replace fittings if seals fail, threads wear, or hoses show signs of corrosion.
5. Special Considerations
Transition Fittings: Ensure thread compatibility (e.g., metric vs. imperial) to avoid cross-threading.
Hose Assemblies: Allow extra length for movement (hoses expand/contract ~4% under pressure).
Note: Follow industry standards (e.g., GB1885, SAE J514) and consult professionals for installation.
