1. The loading inspection method of the excavator thermostat:
1.Inspection after engine operation.
When the engine starts, open the drain cover of the heat pipe radiator to see if the coolant is quiet. If it is quiet, it means that the thermostat is normal; on the contrary, it means that the thermostat is not working.
Note: At this time, the temperature of the water temperature meter should be carried out under the standard that the main gate valve of the thermostat is closed, otherwise it will endanger the whole process of distinguishing the thermostat.
2. The other part waits for your engine temperature to rise, and the thermostat main gate valve is opened to the standard before carrying out the inspection.
At this time, we must be concerned about the change of the water temperature meter. If the temperature reaches the standard of opening the main gate valve of the thermostat
If the cooling fluid's temperature increasing rate slows down, it means that everything is normal during the work of the thermostat; if the cooling fluid's temperature increasing rate has been rapid, causing the coolant to boil and suddenly overflow, it means that the thermostat's main gate valve cannot be normal. Open, at this time, the thermostat must be disassembled or repaired.
Two installation methods of excavator thermostat:
1. Excavator thermostat is generally installed at the drain outlet above the engine.
Advantage:
①Conducive to maintenance.
②It is very easy to discharge the gas when dismantling and replacing the coolant, which prevents the gas from corroding the water pump.
Disadvantages:
The engine is very prone to thermostat fluctuations during the warm-up period.
This causes frequent fluctuations in the engine temperature, which promotes the intermittent fuel atomization of the engine, which in turn increases the fuel consumption, which will accelerate the damage of the engine in the long run, leading to the destruction of the engine characteristics in a certain state.
2. Another installation method of the excavator thermostat is to install it at the inlet of the water pump.
Advantage:
This is the junction of the hot water pipes, which is a particularly sensitive area. The thermostat has a small adjustment range for the water flow at this part, and the adjustment precision is high. It is not easy to cause the temperature of the engine cylinder body The horizontal ups and downs ensure that the engine can run smoothly.
Disadvantages:
When disassembling and replacing the coolant, it is not easy to discharge the gas, and it is very easy to cause the gas to corrode the water pump.
Note: When the thermostat installed at the water inlet of the water pump is damaged, be sure to immediately dismantle and replace the new thermostat. Do not dismantle the thermostat.
If the thermostat is removed immediately, it is very easy to cause the engine to overheat (that is, to "cook the pot"), and then cause damage to the engine, or even damage.
hint:
If the thermostat is arbitrarily removed, the engine will not be able to achieve a suitable working temperature in winter and high temperature in summer. Therefore, it is not necessary to remove the thermostat to prevent unnecessary damage.
