Range Rover (LP) V8-4.0L (1999)
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Coolant Reservoir: Description and Operation
Expansion tank
The expansion tank is located in the engine compartment and attached to the right hand inner wing. The tank is made from molded plastic and has a
maximum coolant level when cold mark molded on the side.
Excess coolant created by heat expansion is returned to the expansion tank from the bleed pipe at the top of the radiator. An outlet pipe is connected
into the thermostat housing and replaces coolant displaced by heat expansion into the system when the engine is cool.
The tank is fitted with a sealed pressure cap. The cap contains a pressure relief valve, which opens to allow excessive pressure and coolant to vent
through the overflow pipe. The relief valve opens at a pressure of 1.4 bar (20 inch lbs.) and above.
