Water Pump Replacement

[Sage103]

This started out as just a little pre-winter maintenance (even though the car is currently out of MOT and likely to be off-road until late spring) just to renew the antifreeze. However when checking all the joints I tightened the radiator temperature sensor a little and managed to produce a leak of new antifreeze. It still leaked after replacing the sealing washer so I decided to take the radiator out for a good check over. It seemed to be ok but I thought it might be a good opportunity to replace it and the water pump (which was weeping a little). I was quite surprised to find a new Nissens radiator on eBay for just under £50. And I already had a replacement pump from my early days of R4 ownership when I used to trawl eBay regularly for suitable parts.

But, as the second photo shows, I need to swap the pulley drive on the pump. It looks like it is a push fit on to the shaft which may be splined. Can anyone confirm that this is the case, please?

 

[angel]

The pulley backplate is an interference fit on the shaft and not meant to be removed / reinstalled. It can be done in a press with suitable supprts but you may run into other problems like different shaft diameters etc. It's better to find another suitable water pump.

 

[Sage103]

The pulley backplate is an interference fit on the shaft and not meant to be removed / reinstalled. It can be done in a press with suitable supprts but you may run into other problems like different shaft diameters etc. It's better to find another suitable water pump.

Thanks for that, Angel. I was afraid that it might not be a simple swop.

 

[reidalpine]

Luckily for all of us waterpumps seems readily available still..If you get a refubd one check how tight it turns
-I've had two dodgy rebuilt ones that took Quite some force to turn...

 

[Sage103]

Luckily for all of us waterpumps seems readily available still..If you get a refubd one check how tight it turns
-I've had two dodgy rebuilt ones that took Quite some force to turn...

New ones, with a 5 year guarantee, on eBay for £23-£30, including postage! One should be here Monday or Tuesday. Hopefully of adequate quality…….

 

[reidalpine]

good on ya Gordon! -Reid

 

[Sage103]

Arrived today and looks and feels good (for £23)!

 

[Sage103]

The belt drive idler pulley had some play in it so having looked in vain for a replacement in the UK, this arrived today from Vehicles Anciens FR - bearing cost 6.58€, packaging cost 18.56€…………

 

[Andy McGhee]

The belt drive idler pulley had some play in it so having looked in vain for a replacement in the UK, this arrived today from Vehicles Anciens FR - bearing cost 6.58€, packaging cost 18.56€…………

View attachment 33826

Gordon
They're widely available on eBay - it's a standard bearing size:

6200-6212 SKF BALL BEARING RUBBER OR METAL SEALS (2RS/2ZZ) - SELECT YOUR SIZE - | eBay

6200: 10mm x 30mm x 9mm. 6209: 45mm x 85mm x 19mm. 6208: 40mm x 80mm x 18mm. 6207: 35mm x 72mm x 17mm. 6206: 30mm x 62mm x 16mm. 6205: 25mm x 52mm x 15mm.

www.ebay.co.uk