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Level 20

Cooling System

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Lower, Jacket
Water pump sucks water up from ___ radiator hose and pumps it up and around the water ___ of the engine also to the inner heater matrix
When the ___ opens water will flow to the radiator via top hose where it cools as it travels down the radiator towards the bottom hose.
Wax, Engine
The ___-based plastic pellet is located on the ___ side of the thermostatic valve. As the engine warms, heat swells the wax pushing open the stat.
The boiling temperature will increase by approximately ___°C for each increase in PSI above ATM
1, 125
At sea level, water boils at 100°C. With a 15 PSI or ___ Bar, pressure cap, water will boil at ___°C, which is a maximum operating temperature for an engine.
Boil, Air
A weak (below 1 Bar) pressure cap can cause a system to ___ at a lower temperature, hence ___ locking
Low, Cavitation
If the coolant system pressure is too ___ then boiling and ___ can occur which may damage the water pump.
Spring, Collapsing
The lower radiator hose has a ___ inside to keep that hose from ___ due to the lower pressure created at the inlet to the water pump.
Pressure Cap, Equalise
A collapsing top hose is normally caused by a faulty ___ ___ not allowing the pressure to ___ with the outside after it cools and reduces below ATM
Centrifugal, Pressure
Water pumps are not positive displacement pumps but are ___ pumps that can move a large volume of coolant without increasing the ___ of the coolant.
Center, Centrifugal, Tips
The pump pulls coolant in at the ___ of the impeller. ___ force throws the coolant outward so that it is discharged at the impeller ___.
Hour, 20
A typical water pump can move a maximum of about 28,000 liters of coolant per ___, or recirculate the coolant in the engine over ___ times per minute.