As we make our way through our list two things I plan to tackle first:
1) The original Sherwood RWP started weeping on our six hour delivery. I've ordered the Oberdorfer N202M-908 that is a newer version that does not require modification to fit. Fingers crossed.
2) I've noticed that the little green light (AC indicator) on the electric switch panel at the nav station is not illuminated. I know we have AC, as the battery charger shows power as do the outlets when I plug in an iPhone charger. Any ideas on what could cause this not to be lit when plugged into shore power? Is there a replacement bulb or diode?
Thank you in advance.
Rick
Quote from: Gulfsailor on December 28, 2023, 07:41:20 AM
>>>>>>
2) I've noticed that the little green light (AC indicator) on the electric switch panel at the nav station is not illuminated. I know we have AC, as the battery charger shows power as do the outlets when I plug in an iPhone charger. Any ideas on what could cause this not to be lit when plugged into shore power? Is there a replacement bulb or diode?
Rick
Rick,
Those little green lights have been notorious for an early death since they first appeared on our electrical panels. Mine is for DC power IIRC. Ron Hill wrote about them in the late 80s, noting the 12V ones would die, and he replaced his with a 24V one that lasted longer. Mine died and I got a replacement from Seaward before they went out of business. After a year it, too, died. I just gave up. You could replace the lamp, replace it with a higher voltage rated one or just live with it. Your boat, your choice. "D
Thanks Stu!
It's the little things.....lol!
Rick : As I also mentioned if you replace that bulb with a 24V bulb it will not shine as bright!! Mine is still working!!!
A thought
Rick : Look at Radio Shack peanut lights. I used each one to light when the A/C is ON , the water heater ON, battery charger ON and any other A/C items you might have installed!!
A thought
Today I received the new Oberdorfer pump. It doesn't have any mounting holes, just a round base. (See image) Not sure how it's going to be installed in place of the old Sherwood?
Any ideas or do I need to order mounting hardware too?
My old Sherwood may have the flange clamps.....😵💫
Here is the image....I think.
I did this same oberdorfer switch from a poorly maintained sherwood that spit water. You have the right pump (I have an m-35). It has been a while since I dis that project but I recall it being straightforward.
Thank you gentlemen for your help!
I replaced my green light last spring. I was able to find them at West Marine and Amazon. They are 8mm(5/16) will fit the hole in your panel. West Marine took about 4 weeks to get the light. Amazon had them to me in 2 days. West Marine had the exact style that was in my panel. Catalina did not carry this light due to age of my boat.
Paul
Guys : If you need a replacement for the DC ON light (Perko switch) Look at SeaDog they have direct replacement light switches for the Propane and Main power light!!
A thought
Quote2) I've noticed that the little green light (AC indicator) on the electric switch panel at the nav station is not illuminated. I know we have AC, as the battery charger shows power as do the outlets when I plug in an iPhone charger. Any ideas on what could cause this not to be lit when plugged into shore power? Is there a replacement bulb or diode?
First visually check the wires and connections, give them a light wiggle or very light tug. Before doing that, make sure to shut the AC power off to the boat, if not the wire to the breaker will be hot.
I've replaced one or two of the panel indicator lights. Was so easy and simple don't remember much of the details. Bought from Amazon, electric requirement (voltage), size (diameter) and appearance were what I looked for. Got a very good match. I would suggest you actually see and measure what you want to replace rather than relying on what someone else has replaced. It's the kind of part that the factory would use what they had available.
Jim
Try this link. if you order check box for color and voltage
https://www.amazon.com/Blue-Sea-Systems-24V-LED/dp/B000K2K7BK/ref=asc_df_B000K2K7BK&mcid=f8633ee1c3c23b9dadd62aa42ddf2c7b?tag=bingshoppinga-20&linkCode=df0&hvadid=80058242182192&hvnetw=o&hvqmt=e&hvbmt=be&hvdev=c&hvlocint=&hvlocphy=&hvtargid=pla-4583657821607093&th=1
Guys : The green DC light "ON" for the 1986-1988 are larger than the 1989 and subsequent switches!!
A thought
Quote from: Gulfsailor on December 28, 2023, 04:24:31 PM
Today I received the new Oberdorfer pump. It doesn't have any mounting holes, just a round base. (See image) Not sure how it's going to be installed in place of the old Sherwood?
Any ideas or do I need to order mounting hardware too?
My old Sherwood may have the flange clamps.....😵💫
Re this and your photo in reply #6, I don't know where you got the part # with the 908 from.
This thread has photos of my Oberdorfer and reply #12 in it gives model numbers.
Oberdorfer Pump Rebuild 101 - http://c34.org/bbs/index.php/topic,6766.0.html
Replaced the old Sherwood raw water pump with the new Oberdorfer today. Pretty straightforward swap out with the guidance provided here on the forum. Thanks all!
Next I will tackle the leaking Lewmar ports with new O-rings, gaskets and applying Sikaflex to the horizontal channels in the frames.
QuoteReplaced the old Sherwood raw water pump with the new Oberdorfer today. Pretty straightforward swap out with the guidance provided here on the forum. Thanks all!
I suggest you rebuild the "old" Sherwood pump. The rebuild kit wasn't much money and was easy to install. Nice to have a spare.
Jim
Thanks Ron for the correction on the green light.
Paul
Thanks. I plan to rebuild the Sherwood using the information posted here. Now I'm looking for the best price for the kit. Prices are all over the place....Depco vs other online sources.
Stay Cool Pumps $92 https://staycoolpumps.com/store/p313/_Repair_Kit_For_Sherwood_Pumps_G903_,_G908.html
Marine Pump Direct $133 https://marinepumpdirect.com/sherwood-major-repair-kit-25108/?gclid=EAIaIQobChMI4a6I1PvIgwMVHU1HAR2WlADmEAQYASABEgIJBfD_BwE
Rick : I wrote a detailed article on rebuilding Sherwood Pumps (Mainsheet tech notes). Make sure that you use a stainless "C" clip, because the copper/bronze "C" clip will be eaten alive by salt water!! I note that in my article!!
A few thoughts
Thanks Ron. I read your article and it will provide a good roadmap to follow.
Quote from: Gulfsailor on December 28, 2023, 04:25:23 PM
Here is the image....I think.
I don't know which pump model you installed BUT here's the facts for anyone else who wants to make the switch
The older engine models (m-25, XP, 35, etc) that are NOT "B" model engines, the Ob pump is the N202M-16, "square" mounting flange. If your Sw pump was a bolt-on (like the way older bolt-on Sw pumps) it will be a direct replacement.
If your Sw has a round, clip-on base you remove 6mm set screws from the TWO (unused) mounting holes on the gear cover. Install 6mm studs in the four holes in the cover and bolt up the Ob pump.
Hint: the square Kubota mounting gasket is better than the Wedterbeke one.
You can use the direct replacement N908M Ob pump BUT it's unnecessary to spend the extra cash for it.
If you have the "B" series engine the direct replacement is the N908M Ob pump.
BUT that's also an unnecessary extra cost if you are handy with a Dremel or angle grinder. The N202M-16 pump can be reworked to be a bolt-on mount pump on the "B" engines.
(If the Sw was clip-on) once you remove the two setscrews in the gear cover and install the studs the pump land will look like the below, ready for the bolt-on N202M-16 pump.
If anyone has any oddball situation or questions just email me.