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#1
Main Message Board / Re: Oil/temp warning
Last post by KWKloeber - Today at 07:23:24 PMQuote from: dclintonbaker on Today at 05:00:12 PMTo check the switch, remove the 2 wires to the switch, short the female terminals together (for a good connection I suggest a jumper wire w/ 2 male quick connect terminals, rather than taping terminals together.) If your alarm problems go away, the switch has@dfiledFAILED and replace it -- if not we'll dig deeper.
Should I do this?
That's not the OEM Wb wiring that I have seen when I replaced a "B" harness. So from afar it might be difficult to tell what you have there or if the PO modified it.
Wb typically installs harnesses before painting the engine so all the wiring is Ice Blue color. Even if not, the OEM wiring had one terminal crimped with two wires (one being red/white stripe) and the other terminal had one wire. And those are not Wb terminals or Wb crimps.
Quote from: KWKloeber on May 03, 2024, 01:05:52 PMI went thru the wiring on the forum and checking the voltages at different points with another owner. If you can't locate that old post with a search I may be able to find it.Did you look for that?
Quote from: KWKloeber on May 03, 2024, 01:05:52 PMis it the oil switch or the temp switch that is alarming?I missed it if you previously answered this.
did he {mechanc] use the wiring schematic to understand why it is alarming?
Disconnect the two wires.
See what the alarm does.
Verify whether the oil switch is open or closed (w/ engine off and running) using your ohm or continuity setting on your multimeter.
Report back!
-Ken
#2
Main Message Board / Re: Oil/temp warning
Last post by dclintonbaker - Today at 05:15:20 PMKen's quote from 13 Nov 2016 at 02:51 :
To check the switch, remove the 2 wires to the switch, short the female terminals together (for a good connection I suggest a jumper wire w/ 2 male quick connect terminals, rather than taping terminals together.) If your alarm problems go away, the switch has filed and replace it -- if not we'll dig deeper.
Should I do this?
To check the switch, remove the 2 wires to the switch, short the female terminals together (for a good connection I suggest a jumper wire w/ 2 male quick connect terminals, rather than taping terminals together.) If your alarm problems go away, the switch has filed and replace it -- if not we'll dig deeper.
Should I do this?
#3
Main Message Board / Re: Oil/temp warning
Last post by dclintonbaker - Today at 05:00:12 PMInteresting post from Breakin Away about importance of installing the correct switch.
Here's another attempt at a picture of the oil pressure switch..for what it's worth.
Here's another attempt at a picture of the oil pressure switch..for what it's worth.
#4
Main Message Board / Re: What's under the stern lad...
Last post by Dave Spencer - Today at 03:55:08 PMHi Mark,
I don't have a Mk II but I've attached a picture of the mounting bolts from my Mk1.5. There is definitely a tapped backing plate embedded in the fibreglass. Your boat may be different but a backing plate makes sense from a manufacturing point of view since installing the swim ladder brackets if it was secured with nuts would definitely be a two person job.
The attached picture was taken when I had the rear water tank removed and was renewing the bilge pump hose that discharges at the centreline under the swim ladder on my Mk 1.5.
Good luck with whatever you're doing.
I don't have a Mk II but I've attached a picture of the mounting bolts from my Mk1.5. There is definitely a tapped backing plate embedded in the fibreglass. Your boat may be different but a backing plate makes sense from a manufacturing point of view since installing the swim ladder brackets if it was secured with nuts would definitely be a two person job.
The attached picture was taken when I had the rear water tank removed and was renewing the bilge pump hose that discharges at the centreline under the swim ladder on my Mk 1.5.
Good luck with whatever you're doing.
#5
Main Message Board / What's under the stern ladder ...
Last post by MarknCat - Today at 01:15:12 PMHi everyone, anyone pull their ladder mounts off? Is there a backing plate molded in with threads or is there nuts under there?
Thanks
Mark
Thanks
Mark
#6
Main Message Board / Re: Oil/temp warning
Last post by Ron Hill - Yesterday at 02:14:00 PMBreaking : What I did with my new engine (wiring for the M25xpB engine came with has the same screwed up wiring harness as the M35BC engine -- was to remove that factory wiring harness!!
What Westerbeke was trying to do is - when the oil pressure drops the electric fuel pump stops and the engine then shuts down!! The only problem is that with the C34, the fuel tank is higher than the engine so when the electric fuel pump stops the fuel will continue to syphon and the engine will still continue to run!!
So what I did was to wire the glow plugs directly into the momentary (spring loaded) position on the key switch. Then I wired the electric fuel pump into the ON terminal of the key switch. The oil alarm switch is a single terminal and wired into a buzzer in the engine instrument panel. No pressure the alarm comes ON (very loud) and when the oil pressure come back up it is OFF (silent). The Westerbeke wiring harness went into the junk pile!!
Simple as that !!
A few thoughts
What Westerbeke was trying to do is - when the oil pressure drops the electric fuel pump stops and the engine then shuts down!! The only problem is that with the C34, the fuel tank is higher than the engine so when the electric fuel pump stops the fuel will continue to syphon and the engine will still continue to run!!
So what I did was to wire the glow plugs directly into the momentary (spring loaded) position on the key switch. Then I wired the electric fuel pump into the ON terminal of the key switch. The oil alarm switch is a single terminal and wired into a buzzer in the engine instrument panel. No pressure the alarm comes ON (very loud) and when the oil pressure come back up it is OFF (silent). The Westerbeke wiring harness went into the junk pile!!
Simple as that !!
A few thoughts
#7
Main Message Board / Re: Oil/temp warning
Last post by Breakin Away - May 07, 2024, 03:50:50 PMYou need to verify with 100% certainty that the mechanic installed the correct oil pressure sensor. Some models are fail-open, others are fail-close. I can't remember which is which, but this issue came up when I had to replace the oil sensor on my M35BC. Installing the wrong one would behave just like "a short in the wiring harness." For this particular item, I would look up the Westerbeke part number for your M35BC engine and get only a genuine Westerbeke part. That's what I did, although I had a very hard time finding someone who had it in stock.
Also, no offense to our Mk1 friends here, but for this particular topic I would be very careful about following any Tech notes for older boats unless you verify that they used the same type of oil pressure switch. Make sure that everyone understands the specifics of your vintage of engine.
Here's a discussion from my own personal experience, with lots of valuable suggestions from others: https://c34.org/bbs/index.php/topic,9214.0.html
Also, no offense to our Mk1 friends here, but for this particular topic I would be very careful about following any Tech notes for older boats unless you verify that they used the same type of oil pressure switch. Make sure that everyone understands the specifics of your vintage of engine.
Here's a discussion from my own personal experience, with lots of valuable suggestions from others: https://c34.org/bbs/index.php/topic,9214.0.html
#8
Main Message Board / Re: engine control cable
Last post by ghebbns - May 07, 2024, 03:22:58 PMMy advice to you is to replace the throttle at the same time. It is not a fun or easy job and it is best to get both done so you won't have to do it again soon.
#9
Main Message Board / Re: Keel Bedding Survey
Last post by Ron Hill - May 07, 2024, 02:14:52 PMKen : Maybe I haven't seen it in "a second", but I've seen it start in a few days!! That 5600 Lb. wing keel
stays put when it's on the ground!!
A thought
stays put when it's on the ground!!
A thought
#10
Main Message Board / Re: Oil/temp warning
Last post by KWKloeber - May 07, 2024, 08:29:02 AMQuote from: dclintonbaker on May 07, 2024, 07:02:25 AMI'm not sure if the image was attached to my last posting. I'm new to this board.
Nope, no pic.
You can always verify by signing onto the forum. Attachments and embedded images are not included in the emails send out.