Heater Core: Service and Repair
Heater Core
Removal
WARNING:
- Never remove the coolant pressure cap under any circumstances while the engine is operating. Failure to follow this instruction may result in personal injury.
- To avoid having scalding hot coolant or steam blow out of the cooling system, use extreme care when removing the coolant pressure cap from a hot cooling system. Wait until the engine has cooled, then wrap a thick cloth around the coolant pressure cap and turn it slowly until the pressure begins to release. Step back while the pressure is released from the cooling system. When certain all the pressure has been released (still with a cloth) turn and remove the coolant pressure cap from the coolant expansion tank. Failure to allow these instructions 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.
- Never remove the coolant pressure cap under any circumstances while the engine is operating. Failure to follow this instruction may result in damage to the engine.
- If coolant comes into contact with the paintwork, the affected area must be immediately washed down with cold water.
1. Release the cooling system pressure.
- Remove the coolant expansion tank pressure cap.
2. Remove the front seat.
3. Remove the floor console.
4. Remove the heater core inlet and outlet pipes retaining plates.
5. Detach the heater core.
CAUTION: Drain the coolant in the heater core and inlet and outlet pipes into a suitable container. Failure to follow this instruction may result in damage to the floor carpet.
6. Remove the heater core.
- Remove the heater core inlet and outlet pipes retaining clamps.
Installation
WARNING:
- Never remove the coolant pressure cap under any circumstances while the engine is operating. Failure to follow this instruction may result in personal injury.
- To avoid having scalding hot coolant or steam blow out of the cooling system, use extreme care when removing the coolant pressure cap from a hot cooling system. Wait until the engine has cooled, then wrap a thick cloth around the coolant pressure cap and turn it slowly until the pressure begins to release. Step back while the pressure is released from the cooling system. When certain all the pressure has been released (still with a cloth) turn and remove the coolant pressure cap from the coolant expansion tank. Failure to allow these instructions 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.
- Never remove the coolant pressure cap under any circumstances while the engine is operating. Failure to follow this instruction may result in damage to the engine.
- If coolant comes into contact with the paintwork, the affected area must be immediately washed down with cold water.
1. Install the heater core.
- Install the heater core inlet and outlet pipes retaining clamps.
- Tighten to 2 Nm.
2. Attach the heater core.
3. Install the heater core inlet and outlet pipes retaining plates.
4. Install the floor console.
5. Install the front seat.
6. Check and top up the cooling system as required.
7. Install the coolant expansion tank pressure cap.
CAUTION: Do not RUN the engine with the coolant expansion tank pressure cap removed. Failure to follow this instruction may result in damage to the vehicle.
8. START and RUN the engine.
9. SET the heating system to MAX heat, the blower motor to MAX speed and the air distribution to instrument panel and console assembly registers.
CAUTION: Observe the engine temperature gauge. If the engine starts to over-heat switch off immediately and allow to cool. Failure to follow this instruction may result in damage to the vehicle.
10. Allow the engine to RUN until hot air is emitted from the instrument panel and console assembly registers, while observing the engine temperature gauge.
11. Switch off the engine.
12. Allow the engine to cool.
13. Release the cooling system pressure.
- Remove the coolant expansion tank pressure cap.
14. 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.
15. Install the coolant expansion tank pressure cap.