Action When Abnormality Is Found During Inspection If any abnormality is found during inspection, always carry out repairs. In particular, if the machine is used when there are still problems with the brake or work equipment systems, it may lead to serious injury. If necessary depending on the type of failure, please contact your DOOSAN distributor for repairs. Precautions with High-pressure Lines, Tubes and Hoses X When inspecting or replacing high-pressure piping or hoses, check to verify that pressure has been released from the circuit. Failure to release the pressure may lead to serious injury. Always do the following: Wear protective glasses and leather gloves.
X Fluid leaks from hydraulic hoses or pressurized components can be difficult to see but pressurized oil has enough force to pierce the skin and cause serious injury. Always use a piece of wood or cardboard to check for suspected hydraulic leaks. Never use your hands or expose your fingers. Do not bend high-pressure lines. Do not strike high-pressure lines. Do not install lines, tubes or hoses that are bent or damaged. Make sure that all clamps, guards and heat shields are installed correctly to prevent vibration, rubbing against other parts, and excessive heat during operation. HDO1045I Figure 41 If any of the following conditions are found, replace the part:
Damage or leakage from hose end. Wear, damage, cutting of covering, or exposure of strengthening wire layer. Cover portion is swollen in places. There is twisting or crushing at movable parts of hose. Foreign material is embedded in the covering. Hose end is deformed. NOTE: Refer to “Hose In-service Lifetime Limit (European Standard ISO 8331 and EN982 CEN)” on page 4-54, for additional European regulations. OP001759 Safety 1-40