| Message: | Pasternak is the purchasing manager of a Russian hydraulic equipment company. The hydraulic equipment they sold 2 years ago could not be disassembled after 1 year and was requested for after-sales service. During the annual maintenance, it was found that the relief valve hole on the hydraulic manifold was blocked, but the valve was just installed under the motor, and the clearance was less than 3cm. It was difficult to disassemble, so they had to contact the equipment supplier and complained about the improper design of the hydraulic manifold, also unwilling to pay maintenance fees. The after-sales engineer spent 2 weeks to complete the cleaning of the whole hydraulic manifold. Pasternak thought of a customer complainted last month that the hydraulic system pressure was abnormal, but the hydraulic components were normal after inspection. Pasternak realized that there may be problems in the design of hydraulic manifold. If it is not solved, there will be more and more complaints later, and the unlucky one is still him. The original hydraulic manifold manufacturer was not sure where the design deviation was. Pasternak asked more than 10 hydraulic manifold manufacturers, and there was no substantive feedback.
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