Water pump replacement

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Re: Water pump replacement

Postby R0B » 04 Sep 2017, 20:57

Whats that then steve?


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Re: Water pump replacement

Postby CJH » 05 Sep 2017, 06:54

Are you going to replace the stubby little hose that connects that flange to the head? This is the time to do it if it's looking at all tired.
Early cooling system, but with the factory oil cooler? How did you plumb that in?
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Re: Water pump replacement

Postby sarahandthebear » 05 Sep 2017, 07:09

Thanks covkid that was a spot of luck I'll have a read through and follow your description and thanks steave I'll get all the tools and equipment ready before starting as for the water pump I looked on brickworks but could not find the one for an early system also I'll be replacing the thermostat correct me if I'm wrong but is it in the same housing as the pump or do I have to buy the thermostat houseing separately
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Re: Water pump replacement

Postby CJH » 05 Sep 2017, 07:26

Brickwerks early water pump - out of stock at the moment though.

The thermostat housing bolts onto the side of the pump. It's not available new anymore, and can be pricey secondhand - take care of the one you've got :wink:
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Re: Water pump replacement

Postby sarahandthebear » 05 Sep 2017, 09:54

[quote="

The thermostat housing bolts onto the side of the pump. It's not available new anymore, and can be pricey secondhand - take care of the one you've got

Thank you hopefully they will get one back in stock soon as for the thermostat that's what I was affrade of not having a replacement housing but how hard is it for me to brake I'm only assuming it's if the bolts are rusted on there but cob kid has a really good page on the wiki with a lot of info about stuck bolts do you think I should change the coolent pipes that run under the van as they are badly corroded and then bleed and renew the coolent these jobs also need doing so it makes sense to do it all at once
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Re: Water pump replacement

Postby sarahandthebear » 05 Sep 2017, 10:19

I'm hoping the engine is still ok as it did overheat I checked the dipstick for signs of coolent and the oil looks clean so I'm hoping once we change the water pump all will be well how tough are these old girls anyway
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Re: Water pump replacement

Postby CJH » 05 Sep 2017, 11:23

sarahandthebear wrote:...how hard is it for me to brake I'm only assuming it's if the bolts are rusted on there but cob kid has a really good page on the wiki with a lot of info about stuck bolts


I'm not sure how typical CovKid's experience was. Vans with the early cooling system are getting on a bit now, and if the water pump hasn't been changed in the last couple of decades then the sort of extreme corrosion he experienced is a distinct possibility. Then again, mine came apart easily, probably because the water pump was only a dozen or so years old. Just take care - remove the pump and thermostat housing as one, and disassemble on the bench. If you hit a snag, get help - don't just use brute force and break something.

sarahandthebear wrote:...do you think I should change the coolent pipes that run under the van as they are badly corroded and then bleed and renew the coolent these jobs also need doing so it makes sense to do it all at once


Your call - doing them now will save you having to drain the cooling system and re-bleed it all over again.

sarahandthebear wrote:I'm hoping the engine is still ok as it did overheat I checked the dipstick for signs of coolent and the oil looks clean so I'm hoping once we change the water pump all will be well how tough are these old girls anyway


Depends a bit on how long it was before you stopped - easiest way to find out is to fit the new water pump and see how it runs.
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Re: Water pump replacement

Postby sarahandthebear » 05 Sep 2017, 14:26

Thanks guys will get it done may have to wait until next month until we get paid and also for brickworks to get the stock in but I'll let you know how I get on or ask for more help :D I'm going to study how to do it all before taking on the challange so I know what the steps are be really prepared
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Re: Water pump replacement

Postby sarahandthebear » 13 Sep 2017, 19:54

Just orderd the water pump and thermostat from brickworks so hopefully can start work next week on the van just in time for winter I apologise in advance if I'm on here asking lots of questions if I get stuck but I a man also very excited to start my first ever real macanical job I always love fixing things but only really basic things up until now so wish me luck :ok
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Re: Water pump replacement

Postby slowcoach » 13 Sep 2017, 21:18

My early engine's water pump and thermostat housing came apart fine too. Remember fortune follows the brave! Best of luck and take your time undoing things, don't rush a stiff bolt. Nice and steady, back and forth :-)
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Re: Water pump replacement

Postby nsjtaylor » 07 Nov 2017, 15:34

So, did you succeed in sorting this out without too much aggro? I think my thermostat is stuck open and I have the same early 1.9 as you (e.g. thermo in a bad spot. I'm just working up the bravery to deal with it!).
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Re: Water pump replacement

Postby CovKid » 07 Nov 2017, 22:51

Its a lottery. I posted the WIKI article so you don't make any schoolboy errors. The earlier system is a pig. Don't forget to add nuts underneath the heads of allen bolts during the refit. It will really save the day should water pump need replacing again. That way you have TWO ways of removing bolts ;) Add copper grease (anti-seize) to thermostat housing bolts. The last person/garage will not have done.
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Re: Water pump replacement

Postby Jeff J » 08 Nov 2017, 07:09

CovKid wrote:Well, you're in luck. I wrote this a couple of years ago - good luck!

http://wiki.club8090.co.uk/index.php/Co ... overhaul_3
I have a problem with stuck allen screws which tool did you buy to help remove them, do you have a link? Thanks
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Re: Water pump replacement

Postby freckvan1 » 09 Nov 2017, 21:58

From my experience replacing the Water Pump is,as CovKid and others suggest, a lottery . In your case just hope it’s positive! :)

Had to replace mine on a campsite in Northern Ireland which all went ok until Thermostat bolts sheared, bugger.
Still,no big deal, just hacksaw Pump off (junior hacksaw,geez) and then soak housing in Plusgas and release bolts.
No chance, both seized solid in housing, ffs!
Ended up drilling them out undersized, no mean feat using an ancient blacksmith vice on friendly farm and equally ancient B&D :shock: Local AA kindly core drilled housing true, amazing service and helped me reassemble and bleed!

Hope it all works ok for you and do change that stubby hose, replace all clips with Stainless, bleed the system, then do as I did and get bladdered! :mrgreen:
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Re: Water pump replacement

Postby jrt » 09 Nov 2017, 22:26

Yep, same here^^^^^^ One bolt drilled out of the thermostat and two of the studs holding the pump on had fused in the pump housing. I had to slowly drill around them with the smallest bit in the dremel to release them. :ok
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