Aluminum block
Note. Installation will require a new impeller O-ring and, if applicable, a new impeller housing O-ring.
Removing
1. The coolant pump is driven by the timing belt. It is located in a corresponding housing on the side of the engine where the timing belt is located.
2. Drain the coolant from the cooling system as described in chapter 1A or 1B.
3. Remove the timing belt as described in chapter 2A, 2B or 2B.
4. Remove the bolts and remove the pump impeller from the pump housing (the best access is provided from under the wheel arch). Remove the O-ring (pic. 7.4, a, b).
Pic. 7.4, a. Remove the coolant pump...
Pic. 7.4b....and remove the o-ring (1.4L petrol engine shown)
5. Optionally, you can remove the pump impeller housing from the back of the coolant pump housing. The best access is provided from under the car (it may be necessary to remove the heat shield of the exhaust system). Disconnect the coolant hoses from the impeller housing (be prepared for coolant to leak), then remove the bolts and remove the impeller housing. Remove the appropriate O-ring.
Installation
6. Clean all mating surfaces.
7. If applicable, install the impeller housing to the back of the water pump housing using a new O-ring. Connect coolant hoses securely.
8. Install the impeller assembly into the pump housing using a new O-ring.
9. Install the timing belt as described in chapter 2A, 2B or 2B (whichever is applicable).
10. Charge the cooling system as described in chapter 1A or 1B (whichever is applicable).
Cast iron cylinder block
Note. When installing, use a new pump o-ring.
11. The pump is driven by the timing belt. It is located directly in the cylinder block.
12. Proceed as above for engines with an aluminum cylinder block, but note that a separate impeller housing is not provided.