forklift brief talk about the causes and solutions of high temperature in water tank of internal combustion forklift truck: drivers know that sometimes, especially in summer, the water tank of internal combustion forklift truck will have a high temperature, and it is necessary to stop, which will affect the operation of forklift truck and damage parts in severe times. what causes the high temperature in water tank of forklift truck? how to solve this problem?
reasons for excessive water temperature of forklift trucks
there are many reasons for the high water temperature: temperature control switches, pumps, fans, rusted water pipes, poor backwater and other factors can cause such a knot phenomenon. the concave and convex of engine water temperature is mainly related to whether the thermostat is working properly, whether the pump can establish the satisfied pressure, and whether the cooling fan can reach the standard speed. how to check the temperature of forklift truck is abnormal? cooling system is generally composed of cooling fans, radiators, thermostats and other components. cooling fans are often driven directly by the engine, and the speed of the fan is the same as that of the engine. the control of cooling water temperature mainly relies on thermostat.
principle of thermostat
the function of thermostat is to actively adjust the amount of water entering the radiator according to the concave and convex temperature of cooling water and change the circulation range of water to adjust the cooling capacity of the cooling system and ensure that the engine works in the appropriate temperature range. it is necessary for thermostats to adhere to outstanding technical conditions, otherwise it will seriously affect the normal operation of the engine. if the main valve of the thermostat is opened too late, the engine will be overheated; if the main valve is opened too early, the preheating time of the engine will be prolonged and the temperature of the engine will be too low. at this time, it can be judged whether the operation of thermostat is outstanding or not. when the engine starts running, if there is cooling water flowing out from the water inlet pipe of the water tank, the main valve of the thermostat can not be closed. when the cooling water temperature of the engine exceeds 70 degrees celsius, there is no cooling water flowing out from the water inlet pipe of the water tank, the main valve of the thermostat can not be opened normally. it needs to be repaired.
the thermostat can be checked in the car by the following methods:
1. view after engine starting: open the radiator nozzle cover, if the cooling level is still, it indicates that the thermostat works normally, otherwise, it indicates that the thermostat works abnormally.
2. this is because when the water temperature is lower than 70 c, the expanding cylinder of the thermostat is in a shortened state and the main valve is closed; when the water temperature is higher than 80 c, the expanding cylinder expands, the main valve gradually opens, and the circulating water in the radiator begins to flow.
3. when the water thermometer indic