What the hydraulic system pressure does not increase because how to troubleshoot A:?? Hydraulic system pressure does not improve the common reasons are: The pressure relief valve. Adjust properly, Tai'an biggest excavator schools, crooked needle, the needle valve spring does not meet the requirements, excavators school, poor piston action, Tai'an excavators school telephone, the internal parts are worn, the system back to the oil spill too much, hydraulic pump and poor. Solution: adjust the pressure, clean the inside, exchange damaged parts, eliminate oil spills, pump repair. The steering wheel can be rotated and the steering wheel unlimited no action is mainly two-way diverter valve within the buffer failure or hydraulic cylinder piston ring damage. Replace the hydraulic cylinder piston seals; check bidirectional buffer valve, the valve body and the valve seat knit. Tai'an best schools excavator _ Kerry and excavators school (online consultation) _ excavators school by 泰安嘉 and Heavy Machinery Co., 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.