(Continued a) 2) pump for excessive wear, lose a big inside. The work of the pump must be inspected, repaired or replaced. (3) The power steering is not loaded check valves; impurity paving it with a check valve ball seat Mifengbuyan; one-way valve between the ball fall into the valve sleeve and the body of the ring groove, which can lead to a power steering When the check valve closed lax, into and out of the oil port connectivity. Should check the installation of a check valve, the oil is clean, wash steering; check valve seal Check the ball and seat, can be lax when grinding repair and installation of new ball. Excavator excavator structure includes an overview of common Tai'an schools excavator telephone, power plant, equipment, excavator slewing school address Tai'an, steering mechanism, transmission, running gear and auxiliary facilities. Judging from the appearance of the school excavators, excavators from the working device, the upper turret, walking bodies of three parts. According to its structure and purpose can be divided into: Crawler, tire type, walker, hydraulic, semi-hydraulic, full swing, non-full rotation, general-purpose, special type, articulated, telescopic boom and other types. Working device is a direct means to complete the mining task. It consists of the boom, arm and bucket three parts hinged together. Landing boom, arm and bucket rotation are used telescopic double-acting hydraulic cylinder reciprocating control. In order to meet the various needs of different construction jobs, excavators can be equipped with a variety of work equipment, such as digging, lifting, loading, smooth, clamps, dozer, hammer, and other work tools. Rotary and walking device is a hydraulic excavator body, the upper part of the turret with a power plant and transmission. The engine is the power source of the excavator, they use diesel fuel at a convenient venue to Tai'an excavator Which school is strong, but also can switch to an electric motor. Transmission through the hydraulic power of the engine is transmitted to the hydraulic motor, hydraulic cylinders and other actuators, to promote the work means action to complete the various operations Tai'an excavators strong school Which school _ _ excavators and excavator Kerry school (view) from the Taian Jia and Heavy Machinery Limited. Taian Jia and Heavy Machinery Co., Ltd. (www.tajhzg.com/) is Tai'an, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Heavy leader in Kerry and the staff warmly welcome all inquiries negotiations to create Kerry and heavy industry a better future.