WATER PUMP REPLACEMENT
Remove any undertrays and plastic covers to reveal the water pump location. Should you have to raise the vehicle, ensure that it is on a level surface and supported by axle stands.
Many water pumps are driven by the cambelt, which will need to be removed first, prior to the water pump being dismounted from the engine block. Pumps driven by the timing belt have sprockets.
Check the old pump’s internal condition – this one is corrosion-free, indicating a healthy cooling system. Some models (such as certain VW Group cars) are fitted with plastic impellors and these can become detached from the shaft.
This pump is driven by the auxiliary belt, not the cambelt. As the pulley has to be transferred to the new pump, it is easier to loosen its retaining bolts while the belt is providing tension, rather than when the pump is off the car.
Even if your pump is driven by the cambelt, you will have to remove the auxiliary belt first, by slackening the tension and unhooking it from the various pulleys, noting the order in which it is arranged.
Be aware that crimping the belt could weaken it, so check the multi-ribbed surface for excessive cracking and perishing. As this ageing belt exhibits light perishing, it should be replaced, along with any related pulleys and tensioners.