Water pump rebuild service

[trunt]

I am comparison shopping, USA/UK

I was looking for any UK vendors that will rebuild a water pump, I saw a post on Tony Hart but found nothing on ebay. Cant find a rebuild service at any of the usual suspects. I really wanted mine rebuilt as I'm leary of the shafts out there.

where can I get a water pump rebuilt in the UK? approximate cost?

Thanks, terry

[mike@thenook]

Hi Terry,

TH now works with Enginuity http://www.enginuity.co.uk/ - they may well be able to help you..

Cheers

Mike

[jagorstag]

Hi Terry,

I seem to recall some of the usual suspects were offering a Stag water pump rebuild service for £65 a couple of years ago or so. Can't remember who it was though, unfortunately.

Cheers,
Joakim

[Guest]

Had my water pump rebuilt by Tony about 4 years ago

[Lingen]

Terry. Is the gear worn on your water pump? If not I would advise that you retain the shaft during the rebuild. If it has done many thousands of miles without wear to the gear teeth, it is likely to do many thousands more, which unfortunately may not be the case with new ones. If it is ok, you will probably be able to find someone able to take the job on. It will be necessary to have the underside of the impellor re-faced where the seal runs against it to do the job properly.
Mike.

[susiedeer]

Terry, Not certain this will provide what you need but LD part has a rebuild kit:

http://www.ldpart.co.uk/shop/shop.php?c=viewproduct&pid=540&cat=4&maincat=1&start=0&sid=sid331d456edf55f601f684dfcf8c42174b

Cheers
Andy

[trunt]

Terry, Not certain this will provide what you need but LD part has a rebuild kit:

http://www.ldpart.co.uk/shop/shop.php?c=viewproduct&pid=540&cat=4&maincat=1&start=0&sid=sid331d456edf55f601f684dfcf8c42174b

Cheers
Andy

Yup I got the rebuild kit.. and promptly ruined my 12-vane.. I should have read up on it more before trying to get the impeller off.. I still have the 6 vane (and both covers)
So Once bitten..

I'm finding over here they are running in the $150-170 (Outright no exchange) and Tony Hart wants 105 UKP inc shipping (in UK) but Tony Hart's have the improved ceramic seal so I am leaning that way, despite the extra hassle.

This seems to be the only thing I have found that is cheaper in the USA - probably due to all the TR7s that came here to the hot summers!

[tractorjames]

Paddocks will rebuild your old pump with original gear. Not on website but if you ring them up they will sort it.

James

[tonyh]

Paddocks will rebuild your old pump with original gear. Not on website but if you ring them up they will sort it.

James

And guess who rebuilds all Paddocks water pumps.

[mike@thenook]

Nice one Tony!

[edd]

Lots of talk about the weakness of water pump jackshafts where I'm sure lots of problems are caused by the water pump slowly seizing then causing more friction on the gears which then leads too failure. Instead of almost free wheeling the resistance gets higher eventually causing more heat and less clearance in the shaft. This could explain why the other drives off the shaft have little problems. It's also another condition that lends itself to occasional use cars sat around then used a few times.

[Lingen]

Edd. I have never heard of a pump seizing. The two common causes of failure are incorrect fitting of the pump cover, or wear in the front bearing for the jackshaft in the block. If this is badly worn, the timing chain can pull the jackshaft towards the r/h side of the block, causing the pump and jackshaft gears to be forced together, with inevitable results. Wear in this bearing also reduces the lubrication of the pump gears.
Mike.

[edd]

Edd. I have never heard of a pump seizing. The two common causes of failure are incorrect fitting of the pump cover, or wear in the front bearing for the jackshaft in the block. If this is badly worn, the timing chain can pull the jackshaft towards the r/h side of the block, causing the pump and jackshaft gears to be forced together, with inevitable results. Wear in this bearing also reduces the lubrication of the pump gears.
Mike.

I only mentioned it as whilst visiting a friend Malcolm I noticed his failed pump seemed a tad tight. You could feel real resistance while holding the cage more so than a normal water pump. Myself not having one at all its not a worry I'm just interested in knowing the cause of his and other failures. Your description does sound spot on for most but I do wonder how many are incorrectly put together and the blame goes all on metal fatigue or bad design when if it was put together correctly the original design would stand a better chance. Interesting thoughts Edd

[Lingen]

Edd.
Your last sentence probably sums it all up. Rebuilding a water pump seems fairly straightforward, but if you haven't done one before, it is easy to get it wrong without realising it. I have seen them installed with the spring behind the seal fully compressed for one reason or another, making it really stiff to turn. A recipe for disaster before long. None the less, I am still suspicious of the hardening being good enough on some of the new pumps currently available.
Mike.