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, askew needle, needle spring does not meet the requirements of Tai'an biggest excavator schools, poor schools excavator Tai'an regular piston movement, the internal parts wear excavators school system back to the oil spill too much, bad hydraulic pump, etc. . Solution: adjust the pressure, clean the inside, exchange damaged parts, eliminate oil spills, pump repair. Within the structure of the excavator slewing gear are: rotary motor, motor bracket, a shaft drive, a Samsung frame, a shaft, Samsung hoist, drive ring, vertical. Kerry and excavator excavator schools _ schools _ Tai'an schools excavator phone provided by 泰安嘉 and Heavy Machinery Co., Ltd .. Kerry and excavator excavator schools _ schools _ Tai'an excavators school phone is 泰安嘉 and Heavy Machinery Co., Ltd. (www.tajhzg.com/) this year introduced a new upgrade, the above picture is for reference only, please call or pictures on this page contact telephone number, to obtain the latest information, contact: Xing Jingli.