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There are two simple ways to judge the failure of North Ben V3 thermostat:
(1) on the vehicle judgment method. When the engine water temperature is high, check the coolant expansion tank also changes the liquid level in the lot, that pump works, you need to check beiben V3 parts thermostat failure to work. The method is: if the engine outlet is very hot, and the cooling water tank inlet and outlet are not hot (when troubleshooting tank not), it can be concluded that the thermostat failure. This is because the coolant can not enter the big cycle caused by high engine water temperature. Otherwise the thermostat is normal.
(2) a simple test: Test methods from the new thermostat thermostat car removed or replaced by the quality is reliable is the thermostat into the pot, put a water table, pour 82-85 hot water, wait 5 minutes, if the thermostat can not be opened more than 0.1mm the thermostat failure; pour water (95-100 DEG C to boil water, immediately pour) wait for 5-6 minutes, remove the check, cycle valve clearance should be 10mm, a small bypass valve should be closed. At this point, if the large circulation valve can not open or clearance is less than 10mm, indicating north Ben V3 parts thermostat can not meet the engine operating conditions under normal conditions.