What does a expansion tank thermostat do?
An expansion tank is designed so there is space in the tank for the coolant to expand. If an expansion tank is overfilled it will discharge coolant when the system is at operating temperature. An expansion tank can also be used as a fill point for the system.
Can a radiator be used as an expansion tank?
If an expansion tank is overfilled it will discharge coolant when the system is at operating temperature. An expansion tank can also be used as a fill point for the system. When an expansion tank is used the radiator doesn’t require a pressure relieving cap.
Why is there no coolant in the expansion tank?
I traced it down to the hose between the radiator and expansion tank. It acted like a check valve. The coolant would be forced into the tank, but the vacuum created when the radiator cooled could not pull the coolant into the radiator. $2 worth of tubing and clamps and 10 minutes labor fixed the problem.
Do you need a pressure relieving cap for an expansion tank?
When an expansion tank is used the radiator doesn’t require a pressure relieving cap. The expansion tanks cap will perform the duties that the cap on the radiator traditionally did.
Where is the coolant tank located in a liquid cooled car?
A liquid cooled system typically features a radiator, fan, thermostat, water pump, a coolant tank, and a fill point. The type of coolant tank and the fill point location can vary depending on the system. In many modern cars the radiator is mounted lower than the engine.
If an expansion tank is overfilled it will discharge coolant when the system is at operating temperature. An expansion tank can also be used as a fill point for the system. When an expansion tank is used the radiator doesn’t require a pressure relieving cap.
I traced it down to the hose between the radiator and expansion tank. It acted like a check valve. The coolant would be forced into the tank, but the vacuum created when the radiator cooled could not pull the coolant into the radiator. $2 worth of tubing and clamps and 10 minutes labor fixed the problem.
When an expansion tank is used the radiator doesn’t require a pressure relieving cap. The expansion tanks cap will perform the duties that the cap on the radiator traditionally did.
Where does the hose from the radiator go?
On this type, the hose from the radiator is connected to a port on the tank itself. The other type has a hose that hangs down from the overflow cap and the hose from the radiator connects to a port on the top of the cap. Problems could be a crack in the molded tube above the coolant level in the tank.