Dear Jaguar Enthusiasts,

The auxiliary heater water pump on my 2003 XJR was inoperative. Here is my experience using a reconditioned water pump from the following source:

https://jaguarspares-northeast.co.uk...reconditioned/

Thanks to CharlzO for his excellent posting:

https://www.jaguarforums.com/forum/x...nt-diy-172933/



Tools needed:

• Pliers to release hose clamps
• Philips-head screwdriver
• Short and long 10 mm sockets with extensions
• 6-1/2-in long-nose locking pliers and protective sheet to clamp the outlet hose at the side of the pump
• Cork plug for inlet hose at the back of the pump

Step 1:
Remove the center cover panel above the reservoir by removing the philips screw in the center. This improves visibility of the work area.
Step 2:
Unplug the electrical connector.

Step 3:
Remove four 10 mm nuts from the pump bracket and remove bracket.

Step 4:
Squeeze the plastic clip of the electrical connector on the bracket to release it from the bracket. Remove the plastic clip from the connector by slightly pushing the latch down. It will be reused.

Step 5:

Put a towel underneath the pump to catch minor fluid loss.

Step 6:

Use pliers to squeeze the outlet hose clamp on the side of the pump and slide it upwards on the hose.

Step 7:

Use 6-1/2-in long-nose locking pliers and protective sheet to clamp the outlet hose behind the hose clamp (a precaution)

Step 8:

Remove the outlet hose by pulling.

Step 9:

Pull the pump slightly out (caution: don’t pull too hard) and use pliers to squeeze the inlet hose clamp and slide it towards the back onto the bend in the hose

Step 10:

Remove the inlet hose by pulling and put the cork plug into the hose (a precaution). Remove the pump without tilting backwards, since it contains fluid.



Installation is the reverse of the above. Attach the plastic clip to the connector and attach the connector to the bracket. Check resistance of the new pump: ~8.5 Ohms. Realistically, the whole process may take more than 1 hour depending on experience.

Add coolant and drive with climate control off until the engine has reached operating temperature. Switch on climate control.

 

Nice comprehensive posting/ I am certain many will thank you.