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Ah, yes, that makes good sense regarding the studs and saving the gear cover.  Are those wedge studs similar to the one shown below?  Or is it more of a screw-in/LokTite kind-of-thing?

I will follow your advice on the cir-clip/gel application.  I also took your advice from another thread that recommended using a genuine Kubota Hour Meter gasket for mounting the pump; today I picked one up at a local Kubota service/dealer shop.

You've been extremely helpful here, Ken.   Taking the time to share your experience and wisdom is much appreciated -- thank-you.

Cheers,
Richard

BTW, if anyone is currently looking for an Oberdorfer N202M-16 in the PNW area, Trotac Marine in Victoria, BC (https://trotac.ca) has two in stock.  Cost is $499 CAN ($363 USD) which is a pretty good price point.

Richard
White Rock, BC
1992 C34 MK 1.5, #1181

Hey @Ken, thanks much for jumping in on this thread.  Fortunately for me, I scored a N202M-16 from a marine shop about 50 kms (30 mi) from home.  They happened to have three in stock!  As I write, one is on a Purolator truck to my home.

That aside, I do have a related question for you.  I've read in another thread on the forum that someone purchased a pump from you along with four mounting studs and nylon lock nuts.  Can you tell me what the advantage is of that as opposed to using SS hex bolts/split washer/washer combo?

Thanks much.

Richard
1992 C34 MK 1.5, #1181
White Rock, BC

Thank-you, Ed Shankle and Jon W for you input here.  I will reach out to Ken to see if he happens to have an OB on hand.   Otherwise, I will definitely give Depco a try.

Much appreciated.
 

Thanks for the input, gentlemen.

@Noah - Yes, I did contact them.   They are out of stock and will email me when stock is available.

@waughoo - Yeah, perhaps "knock-off" is a wee bit of a stretch but hey, they did copy Sherwood's ingenious, PITA impeller cover bolts placement!  If they copied anything, it should have been the impeller!

@Ron Hill - I've got an email into them and awaiting a reply.  Keeping my fingers crossed.
 

I have a weepy Sherwood water pump on my M25-XP that I'd like to replace with an Oberdorfer N202M-16.  However, I'm having a tough time finding a supplier that has them in stock; and they are either not sure when stock will arrive, or are admittedly guessing near/end of July.

So far, I've tried:
    • Parts and Pumps Online
    • Catalina Direct
    • Fisheries Supply
    • Diesel Parts Direct
    • Ace Power Parts
    • BMP Industrial Supplies
    • Motor, and Marine Pump Direct.

The squeeze-play is on a bit as I have a haul-out scheduled for July 6 (3 weeks away) and I'm loath to push that back as it is eating into the sailing season and the Admiral is getting ansy.

My preference would be not to purchase a $1,665 USD $herwood from Catalina Direct, or to try a rebuild kit for the Sherwood as I would have no idea what I'd be getting myself into (read: impending fiasco).

So, I have two questions:

1. Can anyone recommend another trusty supplier not on the aforementioned list that I should check with for an Oberdorfer?

2. Does anyone have any intel on, or experience with, the JPR-WB7108 (Sherwood knock-off, including goofy bolt access) from JMP Marine?  My thinking is that it may be good enough until I can get an Oberdorfer, and then the JPR would become a stand-by should the Oberdorfer need to come out of service for some reason.  In another post, one @KeelsonGraham talks about installing one about 9 mos. ago and says, "It does the job just fine in UK sea temperatures (65 Fahrenheit)."   Any other insight on the quality and performance of this item?


Thanks much for your thoughts/input.

Thank-you both, Ken and Stu for your helpful explanations of what I've found "under the hood."   This is really helpful.   I'm about to depart on a mutli-week cruise, so changing the "S" wire out beforehand isn't in the cards.  So for the short term, I'll wire up the relay as noted, purchase a spare relay and fuse to keep on hand, and then re-wire in the off-season.

This is my first boat and only had her for a few months, so I'm learning a lot... fast.  It is great to have people like experienced people like yourselves take the time to assist newbies such as me.  Thanks again.

[assume]

During the re-installation of my HX (following a jolly-good, muriatic acid day spa), I managed to disconnect all but the ground wire from my selinoid relay.   The before and and after photos are below.  I believe the relay has the same pinout as shown in the diagram, also below.

The boat is a 1992 C34 Mk 1.5 with an M-25XP.

From the "Before" photo, it appears that the wires are attached to the relay as follows:
- Black - pin 85  (goes to ground bus bar)
- Red - pin 30 (goes to top, center of selinoid via ring terminal)
- White - pin 87 (goes to top of selinod, offset from center to the side, via quick connect (spade) terminal -- see photo below)

What isn't shown in the Before photo is the wire from the Start button on the cockpit.  It has an in-line fuse and I assume it is supposed to be connected to pin 86.  The wire is yellow with the red stripe and has a quick connect terminal.

It would be most appreciated if someone could verify that:
a) The wire from the Start button in the cockpit goes to pin 86, and
b) Pin 87a is not used in this application.

Thanks much!