1 fan cooling fan air flow testing tissue can be put in front of a radiator when the engine is running, if the paper can be blown open, then the air flow is sufficient. This front-engine car fan inward suction different. Leaves can not hold against, and should ensure complete and effective fan shroud release. 2. Radiator radiator placed in the rear forklift vehicle. Due to lower truck chassis, and poor factory working environment, some of the debris, dust can easily accumulate in the radiator surface, if not cleaned, it will seriously affect the cooling effect. Every job is completed carefully deal with the radiator surface cleaning, try to avoid using water cannons. Because thin wall radiator, if the cleaning pressure is too high, then it is easy to punch deflated, affecting circulation effect. In addition, prohibited the use of cooling water "hard water" in order to prevent scale radiator, resulting in insufficient cooling water added. 3. Check the thermostat on the engine currently used in the wax-type thermostat thermostat based. Its main performance indicators at different temperature thermostat should have a different lift. To dynamically control the level of cooling water temperature. For non-disintegration of the cooling system to check the thermostat is good or bad, mainly through the radiator inlet and outlet temperature difference to distinguish. In the engine cold start time ago, into the outlet temperature difference should be obvious touch at work for some time, the temperature difference was significantly reduced. Touch no obvious difference in temperature sensation (80 ℃ -90 ℃) when the engine reaches the normal operating temperature. Of course, the most accurate method for detecting or removing the thermostat, placing it in hot water, gradually heated, and the check valve opening temperature of the valve lift. 4, the power cooling water pump in the cooling system checks continuously circulated from the pump source. Pumps can build up enough pressure is the key to the cooling system working properly. When adding coolant, if as the engine speed increases, the coolant level decreased significantly, indicating that the pump is working properly. On the contrary, it may loose water pump impeller, cooling water is not circulating. In domestic forklift engines, pumps, generators, cooling fans share a belt, belt tightness and therefore directly affect the pump, fan, generator speed. Pressed with your finger in the middle belt, under deflection should be 11-13mm (CPC3L models) as normal, so the General Assembly leading to the water temperature is too high, too will be on the water pump bearings, generator bearing damage.
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