Rubber hose maintenance

The maintenance procedures for hoses and fittings will reduce equipment downtime and maintain optimal operational performance of the hydraulic system. Here are some maintenance reminders:

Based on the previous history of the equipment, a complete set of maintenance/testing procedures, and the strictness or potential hazards of the usage requirements, the hose assembly should be tested regularly.

Always be careful when inspecting the hose assembly. During the system inspection process, in order to reduce the risk of personal injury, do not touch the components and pay attention to potential hazardous areas near the hose assembly.

The inspection of the hose and connector is as follows:

The steel wire is exposed, broken, or corroded.

Leakage at the pipe body or joint.

Joint rupture, damage or corrosion.

Other obvious signs of damage.

If any of the above situations occur, the hose assembly should be replaced immediately.

The hydraulic system should also be tested as follows:

Leakage port

Rubber hose clamp, protection or protection system damage or omission.

Excessive dust or oil stains on the assembly.

The condition of the system fluid, fluid temperature, pollution, and trapped air.

If any of the above situations are discovered, appropriate and correct actions should be taken.

Functional testing should be performed to determine whether the system is leak free and operates correctly.

If the hose assembly can be tested and separated from the hydraulic system, further measures can be taken to ensure a properly repaired assembly:

After separating the hose assembly, blow it with clean compressed air or rinse it with a compatible clean medium.

Check the incision, residue, and cleanliness of the rubber inside the hose.

Check the straightness of the rubber hose to ensure that it is not twisted.

Ensure that the joint is in good condition and properly fastened or assembled onto the assembly.

If any of the above conditions are found, the hose assembly should be replaced.

The hose assembly shall undergo hydrostatic testing in accordance with the approved test bench and procedures outlined in SAE J1517. Test for 30 seconds to 1 minute at twice the experimental pressure or working pressure of the hose.

When the test pressure is reached, visually inspect the rubber hose for any damage, leakage, or signs of movement of the pipe body relative to the loose joint. If any of these situations exist, the assembly should be replaced.

The specific joint replacement interval must be based on the previous service life, government and factory recommendations, otherwise damage may cause personal injury or property damage.

Rubber hose storage

Temperature, humidity, ozone, direct sunlight, oil, solvents, corrosive liquids, insects, rodents, and radioactive materials can all pose a threat to rubber hose products and cause premature failure. Rubber hoses should

When stored in a dark, dry environment and away from heat sources, electrical equipment, and harmful elements mentioned above. The ideal storage temperature for rubber hoses is+10 ℃ to+20 ℃, with a maximum of 38 ℃.