Smiths External Water Pump advice needed.

for those with Series MM sidevalve cars produced between September 1948 and February 1953

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Squeezebox
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Smiths External Water Pump advice needed.

Postby Squeezebox » Thu Jul 02, 2009 8:17 pm

I posted this query earlier in the general mechanical section in error - I'm trying to rebuild what had been a siezed up Smiths water pump for my MM. I've got it stripped down and need to find a replacement for a rubber seal that runs on the main shaft. There is too little of the old one left to make any kind of accurate identification. Does anyone know if there is a replacement or compatible seal still available, and if so what it's reference is?

Additonally, upon removing the wick oiler I was suprised that the hole didn't continue through the brass bearing to the shaft. Is this correct?

Mike
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........

mike.perry
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Postby mike.perry » Thu Jul 02, 2009 9:13 pm

Try E P Services, Wolverhampton, tel 01902 452914, they deal specifically with water pump repairs.
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Pyoor_Kate
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Postby Pyoor_Kate » Thu Jul 02, 2009 9:53 pm

Without looking or knowing anything about it, is it a sintered bearing? My (desk) fan has one of them with a little wick oiler.
Last edited by Pyoor_Kate on Fri Jul 03, 2009 8:18 am, edited 1 time in total.
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rayofleamington
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Postby rayofleamington » Thu Jul 02, 2009 10:35 pm

if the bearing is porous, that would explain why it doesn't need a through hole.

As for the shaft seal, that's the most problematic part of any electric pump! If you measure the shaft and the outside diameter of the seal and the length, you might get lucky.
Up to about 10 years ago most seals were still made with imperial sizes. Over the last decade there's been a strong shift to metric (even affecting the USA!), but the imperial are still available as spares etc..

There are some good modern electric water pumps (to allow water circulation after you turn the engine off) - my favourite was one from a Focus Turbo development car where the pump was driven by magnets through a plastic housing to eliminate the need for a shaft seal.
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Postby Onne » Fri Jul 03, 2009 9:23 am

I think this waterpump is the one for the heater isn't it? The one driven from the fan belt, clamped on with a spring to ensure circulation through the heater matrix?
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stevey
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Postby stevey » Fri Jul 03, 2009 4:19 pm

''Without looking or knowing anything about it''

its this isnt it?<br>Image<br>


If in Doubt hit it!!

Squeezebox
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Postby Squeezebox » Fri Jul 03, 2009 6:06 pm

Yes - thats the item in question.

Mike
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........

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Postby mike.perry » Fri Jul 03, 2009 11:16 pm

Your 52 MM should have the later engine with provision for a water pump. Or have you got the early engine fitted?
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wimor
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Postby wimor » Sat Jul 04, 2009 1:32 pm

This is the later engine with provision for a water pump. In this photo with cover plate.

Image
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Postby Squeezebox » Sat Jul 11, 2009 2:57 pm

mike.perry wrote:Your 52 MM should have the later engine with provision for a water pump. Or have you got the early engine fitted?
Yes - an earlier engine. It's painted gold but whether that means that it's a "Goldseal" or just one that somebody has painted gold is anybody's guess! It runs well, and that's what matters. Obviously if I can at some point get my hands on a correct engine with a water pump that would be good but an advert in the club mag a few months back didn't bring forth anything. The heater unit is still in the car, incidentally.

Mike
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........

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Postby mike.perry » Sat Jul 11, 2009 6:18 pm

The early heaters are pretty hard to come by so if you have an early engine that goes well then you should get best use of them. Have you got all the bits for the heater. The company I sent you should be able to sort out any problems as all they do is water pumps. They repaired mine and Graham's and I think they have done some for club spares, all later type admitted.
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Squeezebox
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Postby Squeezebox » Mon Jul 13, 2009 4:41 pm

I'll give them a call. Incidentally, the MM ran superbly yesterday up the A6 on a round trip to the Lancs Rally at the Leighton Hall classic car and motorcycle event near Carnforth. There was one other MM there, a '53 with a water pump engine. There was however a Smiths pump on view fitted to a Ford Pop.

Mike
Mike Gott. 1968 4-door saloon, Ariel and Velocette motorcycles - and a 5 ton Ruston and Hornsby narrow gauge railway loco........


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