Water pump hose connections & Replacement cover

Newsgroups Archive Prior to 2025
1

Hi All -

I’m working on rebuilding the raw water pump on my W46. The inlets on the pump have what appears to be a flat brass or copper pipe with NPT threads on one end, approx. 3" long, no barbs. I’m wondering if that’s how they came originally? I found 2 diagrams in the manual that show 2 different conditions. I’m wondering if they should be barbed or if these smooth pipes are adequate?

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Also, I’m wondering if anyone has replaced their cover with one like this:

https://staycoolpumps.com/store/p276/Replacement_End_Cover_for_Sherwood_G65_F85_,Perkins_NA003335,_Westerbeke_18171_12220.html

Looks like a good alternative to the standard and I like the rubber O-ring instead of a gasket. Similar to the Speed Seal that I have on my NS30.

Thanks -

Bob Gehrman
NS36 #52 “Fortunate”
Warwick, Rhose Island

2

We installed a cover very similar to this on our raw water pump, ordered from Amazon and works very well. Our old cover was worn and not sealing well so could not maintain suction.

Bill kroes
NS36 #24
“Canatara”
Sarnia, Ontario

3

Hi Bill,

Can you post link to the Amazon one you purchased?

Thanks,

Don

4

Looks like there is room to double clamp. For more confidence use the pricier clamps that are not perforated.

5

Hi Bill,

Can you post link to the Amazon one you purchased?

Thanks,

Don

6

I was surprised today while trying to remove the hose from the engine raw water thru hull to the strainer to winterize to find the fittings the hose was attached to on the valve and the strainer were as you describe… threaded one end and smooth , no ribs and about 3 “ long. I ended up cutting the hose in half with the intention of installing a tee with a plug for future winterizations. I’m glad I did because I would not have been able to get it apart without dismounting the strainer somehow.

Brian Cayer
Spirit~Wind
N30U 419
Deep River, CT

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7

Well I’m glad I’m not the only one! My PO was a little MacGyver but I thought that was crazy. I’m switching to barbed fittings so I can sleep at night.

I’m also adding a tee for winterizing. I did that on my water system prior to the pump, too. Makes the process much faster!

Bob Gehrman
NS36 #52 “Fortunate”
Warwick, Rhode Island

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Okay, thanks. Possible you can more easily find it by logging into your Amazon account, then looking up through past orders? They keep records of your orders going back several years.

Cheers,

Don

9

Remember that it’s best not to have any 90 deg angles on those fittings/hoses.
Joe Valinoti
S/V iL Gatto NS30U #221
Sea Harbour YC
Oriental, NC USA


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10

Bob,
I purchased the replacement cover on EBay (I think the link below should work). The kit looks identical to the one you are considering. I found it by searching for " Westerbeke 16423 pump cover" . Fits perfectly and the pump has worked fine for the past two seasons.

https://www.ebay.ca/itm/123616020570?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=-hes8LEOQ02&sssrc=2047675&ssuid=&widget_ver=artemis&media=COPY

Bill Kroes
NS-36 #24
“Canatara”
Sarnia, Ont

11

Try using either cap screws or thumb screws instead of slotted ones. McMaster Carr carries them. Much easier to install. As well cut a slot in the cover so you only need to remove two screws to slide it off.

If the cover is not longer flat, try sanding it flat on a piece of emery cloth laid on a piece of glass.