Good hydraulic oil cooling system for large hydraulic excavator hydraulic oil cooling system (or rather should the hydraulic oil temperature control systems) to improve, although the specific ways the manufacturers use different, but the basic idea is the same, both the temperature of the hydraulic oil in continuous operation in the balance in the ideal range, but also make the hydraulic system in the cold state can be quickly put to work when the temperature (up to normal operating temperature range of oil). In the case of a qualified hydraulic oil under the premise, when there is overheating hydraulic oil, hydraulic oil cooling temperature control system checks the following steps: ①, hydraulic oil cooler if there is dirt clogging, resulting in decreased cooling efficiency, if necessary, cleaned heat sink. ②, fan speed detection system actually working pressure under extreme conditions, to determine the hydraulic circuit is faulty, if oil temperature sensor or control circuit is normal. In this case the fan speed and system pressure should be a maximum value; otherwise the price mini excavator, response system parameters can be adjusted accordingly or replace damaged components. Currently large hydraulic excavator working pump control, there are two main methods: limit load adjustment with pressure shut-off function (ie CUT-OFF function) (GLR) and load sensing regulator (LS) mode. The role of CUT-OFF function, when system pressure reaches the setting value, the swash plate angle variable pump is reduced, the pump can only be maintained at the pressure required to maintain the "residual" flow state to avoid overflow overflow valve overheating. To achieve this purpose, the system parameters to match the technical requirements so that the setting value is lower than the CUT-OFF valve set-value of the primary circuit pressure valve; otherwise, the primary pressure relief valve open will result in overheating. Also, check the secondary valve is working properly, this work must be carried out strictly in accordance with the technical requirements, respond to system parameters adjusted if necessary restorative. Quotations exclusive master excavator mini excavator price, you make it? No technology is not NO.1 brother excavators price list is your land grievances. NO.2 virtual earth excavator dug price of others, let others go dig hard. NO.3 reversing that you do not use technology to challenge my ability to the bucket. NO.4 had a good block of stone, but was I broke, if God give me another chance, I am not using it to hit that loaded B dumpers. NO.5 most proud of is this: I have not filled the earth, you Ah car and ran, but to the dump, they do not give you a ticket pull soil. NO.6 most schadenfreude is: especially bad place in my car passed, and followed to the car fell out. NO.7 open Big Ben amazing ah, you can go sideways. Could you? NO.8 I have in front of the meteor, we do not have to work overtime excavation machine so nice, but when I opened my eyes, TMD, the meteor to 200 times faster than the original backtrack. NO.9 brother is not open digging machines, is lonely. Henan excavator price | Kerry and Heavy | mini excavator price offered by 泰安嘉 and Heavy Machinery Co., Ltd .. Taian Jia and Heavy Machinery Co., Ltd. (www.tajhzg.com/) is specialized in "Hydraulic excavators, loaders construction machinery, mining machinery, metallurgical machinery, oil machinery, ring" of the enterprise, the company adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: punishment manager.