Thermostat: Service and Repair

Thermostat

Removal

WARNING: Never remove the coolant expansion tank cap under any circumstances while the engine is operating. Failure to follow this instruction may result in personal injury.

WARNING: To avoid the possibility of personal injury, do not operate the engine with the hood open until the fan blades have been examined for cracks and separation. Failure to follow this instruction may result in personal injury.

CAUTION: The engine cooling system must be maintained with the correct concentration and type of anti-freeze solution to prevent corrosion and frost damage. Failure to follow this instruction may result in damage to the engine.

CAUTION: Never remove the coolant expansion tank cap under any circumstances while the engine is operating. Failure to follow this instruction may result in damage to the engine.

NOTE:
Removal steps in this procedure may contain installation details.




1
- Clamp the relevant hose, to minimize coolant loss.




2




3

Installation
1 To install, reverse the removal procedure.




2 Loosen the cooling system bleed screw.




3
CAUTION: Anti-freeze concentration must be maintained at 50%.
Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar specification WSS M97B44-D and fifty percent water.
- When coolant runs from the expansion tank bleed point bubble-free, tighten the bleed screw.
4 Install the coolant expansion tank cap.
5
CAUTION: Do not RUN the engine with the coolant expansion tank pressure cap removed. Failure to follow this instruction may cause damage to the vehicle.
Start and run the engine.
6 Set the heating system to MAX heat, the blower motor to MAX speed and the air distribution to the instrument panel registers.
7
CAUTION: Observe the engine temperature warning light. If the warning light is displayed, switch off immediately and allow to cool. Failure to follow this instruction may cause damage to the vehicle
Allow the engine to run until hot air is emitted from the instrument panel registers, while observing the engine temperature warning light.
8 Switch the engine off.
9 Allow the engine to cool.

10 Release the cooling system pressure.
- Remove the coolant expansion tank pressure cap.

11 Top up the cooling system.
- Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar specification WSS M97B44-D and fifty percent water.

12 Install the coolant expansion tank pressure cap.