Good hydraulic oil cooling system for large hydraulic excavator hydraulic oil cooling system (or rather should the hydraulic oil temperature control system) to improve hand digging machine manufacturers, although the specific way the manufacturers use different, second-hand digging machine plant, but the basic idea is the same, both the hydraulic oil temperature 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 oil ??? In the case of a qualified hydraulic oil under the premise, when there is overheating hydraulic oil, hydraulic oil cooling step to check the temperature control system of visual inspection: visual inspection should be carried out before the starter car. In the following order a thorough examination of the surrounding environment and the bottom of the locomotive: 1, whether there are oil, fuel and coolant leaks. 2. Are there loose bolts and nuts. 3. Are there electrical lines broken wires, short circuit and battery connectors are loose. 4, if there is oil. 5, whether people buildup. Used Digging Factory Jin Hao _ _ used excavators digging machine manufacturers used by Shanghai Used Construction Machinery Co., Ltd. Jin Hao. Used used excavators digging Factory Jin Hao _ _ Used excavator manufacturers are Shanghai Jin Hao Used Construction Machinery Co. (www.jinhaosh.cn) 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: Mr. Chairman.