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Old 13-09-2017, 08:11   #1
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Westerbeke 40 Water Pump

Hi, I've got a shot water pump">raw water pump on my Westerbeke 40, which is very similar to Perkins 4-108. The Westerbeke PN is 016423, and when I look up the price for a new one from Westerbeke, it's $944!!!!

It's a Sherwood pump, and one would think you could get a new one for more like $500, but so far, no joy. Does anyone out there with a W40 have some magic bullet for me? The boat is a Pearson 367, and it's the same engine on the 365 if I am not mistaken.

Thanks to anyone who can help with ideas or solutions!
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Old 13-09-2017, 08:50   #2
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Re: Westerbeke 40 Water Pump

By the way, the Sherwood part number is either G65 or F85, and the Westerbeke PN seems to cross to the G65, but it's not clear. A Sherwood G65 for a Perkins costs about $530, but it is not clear that it will work for a Westerbeke.
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Old 13-09-2017, 09:00   #3
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Re: Westerbeke 40 Water Pump

This one? $40 and up under New Holland Tractor supply places
Water Pump | Perkins 4.108 | Engine Parts | 871156
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Old 13-09-2017, 09:05   #4
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Re: Westerbeke 40 Water Pump

Quote:
Originally Posted by Cheechako View Post
This one? $40 and up under New Holland Tractor supply places
Water Pump | Perkins 4.108 | Engine Parts | 871156
No, I wish it were. The 4-108 pump looks like this:

https://www.jamestowndistributors.co...s+Cooling+Pump
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Old 13-09-2017, 09:20   #5
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Re: Westerbeke 40 Water Pump

Sorry, I was thinking the freshwater pump. I should have known from "sherwood". I haven't had the 4-108 for years but it seems to me there are other brands etc available that fit. Hopefully someone will chime in.
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Old 13-09-2017, 09:31   #6
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Re: Westerbeke 40 Water Pump

I see Defender has them for $460 (G65)
Found this thread, is the housing worn or could you rebuild it? Rebuilding Sherwood G65 for Perkins 4-108
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Old 13-09-2017, 10:23   #7
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Re: Westerbeke 40 Water Pump

You can rebuild the pump. Seal is about $26.00 If you need the shat and bearings its about $150 more. You'll need your friendly auto repair guy to press in the bearings to the pump casing. Otherwise the rest is easily doable. I bought a g-65 for about $450.00
. Bob.
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Old 13-09-2017, 10:39   #8
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Re: Westerbeke 40 Water Pump

Quote:
Originally Posted by Cheechako View Post
I see Defender has them for $460 (G65)
Found this thread, is the housing worn or could you rebuild it? Rebuilding Sherwood G65 for Perkins 4-108
My spare pump, which is not really a spare, is in exactly the same shape as the one described in the thread about re-building. Might be able to re-build it, but I still need a (functioning) spare. The one pulled from the engine two days ago may or may not be truly shot. The bearing is definitely shot, and I dodged a bullet in terms of it being so far gone that raw water flow was close to zero. You can wiggle the shaft with your fingers. If I knew for sure the G65 would fit the W40, I'd just buy it. Maybe I should buy it and see if it fits, and return it if it doesn't (have to check the Defender return policy).
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Old 13-09-2017, 11:25   #9
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Re: Westerbeke 40 Water Pump

We have a Westerbeke 46, which has a Mitsubishi block. (1988 vintage.) After hours and hours of searching online and through dealers and retailers, we found ONE online that said it was a match, so we ordered it. Well, it was a match in every way - EXCEPT for the bolt pattern! (No way to change that, so no way to bolt it to the engine.)

We ended up having our original pump rebuilt for about $65 USD in Portland, Oregon. Only one place in the city we could find to rebuild it, a really old guy in a really old shop who had been rebuilding water pumps for years.

We bit the bullet and bought a new one from a Westerbeke dealer for the un-godly price you mentioned. But, we're cruising and can't be without a spare.

We have since found several engines being parted out, and could have picked up a used one and had it rebuilt also for a fraction of the cost of a new one. $944 is really expensive for red paint.

Good luck!
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Old 13-09-2017, 12:13   #10
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Re: Westerbeke 40 Water Pump

I did some more research, and it looks like the Westerbeke replacement pump is a Sherwood F85. But even that is > $700.

So it looks like rebuilding is the way to go.
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Old 13-09-2017, 17:24   #11
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Re: Westerbeke 40 Water Pump

Sherwood G65 F85 Water Pump Major Repair Kit 12221 Westerbeke 018172

This and 20 minutes you should be good to go unless the shaft is buggered

And all the parts if it is

http://www.pumpvendor.com/Sherwood_F85_F-85_parts.html
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Old 14-09-2017, 08:38   #12
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Re: Westerbeke 40 Water Pump

The Perkins 4108 pump and the 4107 are similar as is the Westerbeke. I buy all my parts for my 4107 from the following suppliers. I have looked up the pumps and provided the links for you. https://www.parts4engines.com/perkin...aw-water-pump/
https://www.sheridanmarine.com/produ...mp-service-kit
I am in the UK but I hopefully this will help you in the right direction.
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Old 14-09-2017, 08:44   #13
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Re: Westerbeke 40 Water Pump

Thanks to all. I believe from checking photos, it is an F85 pump (the G65 has two equally sized flanges, whereas the F85 has one smaller than the other). I'll rebuild both my pumps.
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Old 14-09-2017, 09:51   #14
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Re: Westerbeke 40 Water Pump

I would try a rebuilding if you do not want do do it yourself, try the Flying Dutchman, he rebuilds pumps, had him do one for a friends boat and he did a quality job
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Old 14-09-2017, 09:53   #15
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Re: Westerbeke 40 Water Pump

Quote:
Originally Posted by AJ_n_Audrey View Post
Thanks to all. I believe from checking photos, it is an F85 pump (the G65 has two equally sized flanges, whereas the F85 has one smaller than the other). I'll rebuild both my pumps.

What year is that engine? I have a 1997 42b and I think I only paid about $450 for the pump (8 YEARS AGO MAYBE) from Westerbeke.
For freshwater pump my block is a Mitsubusi K4F and you can get that for about $70
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