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Old 06-10-2018, 07:10 PM   #1
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Westerbeke 5kw Diesel Genny stopped

Was running fine and then just shut down. When I went to the panel to start it up again the panel light was off and didnt comeback on when i switched it into start (or prestart) which usually turns the light on and I hear the clicking.

Its almost as if somethig electrical blew. The red reset breaker in front was fine

what else should I initially look for?

thanks
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Old 06-10-2018, 07:14 PM   #2
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Which model WB exactly?
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Old 06-10-2018, 07:37 PM   #3
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Water flow? No? Check strainer, clean as necessary. You could have sucked up a plastic bag, back flush from strainer through the hull valve. Still no water flow? Hmmm, impeller needs to be replaced? Blow back through the cooler to remove "stems and pieces" from the other impeller.
The generators are designed to protect themselves and they do, 99% of the time.
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Old 06-10-2018, 07:50 PM   #4
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Quote:
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Which model WB exactly?
5.0 bcdb
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Old 06-10-2018, 07:52 PM   #5
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Water flow? No? Check strainer, clean as necessary. You could have sucked up a plastic bag, back flush from strainer through the hull valve. Still no water flow? Hmmm, impeller needs to be replaced? Blow back through the cooler to remove "stems and pieces" from the other impeller.
The generators are designed to protect themselves and they do, 99% of the time.
Raw Water was fine as far as I now. impeller was replaced maybe 20 hrs ago

But even if that were the case, it would still have power and turn over. Its totally dead. No Power.

Is there a main fuse someplace?
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Old 06-10-2018, 08:00 PM   #6
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My NL has a reset switch.
I had a WB but cannot remember where the reset switch was located, sorry.
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Old 06-10-2018, 08:38 PM   #7
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My Westerbeke 4 has a reset switch, right out in front when you take the side off of the cover.
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Old 06-11-2018, 04:45 AM   #8
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I looked at the 5.0BCDB wiring diagram and there is no reset switch. Sounds like you have lost control power. Get a copy of the wiring diagram off the WB site (Engineer 45633) and start troubleshooting with a DVM to see what component is failed. Even a 12v test light will work on a WB. I hope you have decent access.
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Old 06-11-2018, 05:19 AM   #9
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On my 8 BTD Beker, there was a hot wire for ignition that was a spade connector on the hot lug of the starter.

It gets loose through time and occasionally would not make a good connection and kill the remote start panel.
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Old 06-11-2018, 06:06 AM   #10
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will try to go down today and poke around w tester.
let you know how it goes.
Thanks
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Old 06-11-2018, 07:33 AM   #11
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On my 8 BTD Beker, there was a hot wire for ignition that was a spade connector on the hot lug of the starter.

It gets loose through time and occasionally would not make a good connection and kill the remote start panel.
+1

Yup, check out loss of power or loose wire triggering the shutdown devices. Moonzy, does your genset have its own alternator and start battery?
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Old 06-11-2018, 07:40 AM   #12
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+1

Yup, check out loss of power or loose wire triggering the shutdown devices. Moonzy, does your genset have its own alternator and start battery?
yes it does. i actually checked the battery directly the other day because I though it was turning slowly on startup and it was 13.5 w charger and 12.8 charger off.

I dont feel like any of the shutdown protect senders are an issue on this one. Its either a main fuse I dont see or a wire that came loose from the power somehow.

I am ashamed to say I am not sure of an alternator. I assumed that when its delivering ac power, the batt charger should be taking care of that...no?

Thank you!
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Old 06-11-2018, 07:44 AM   #13
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Crap!
I just realized something.

I forgot the switch the main power from shore to Gen AC when I left the dock.

If theres no ac to the charger then its running its own battery out which would explain the absence of power to the control panel

Ill bet thats what happened

Now im gonna head down. Its been charging all night
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Old 06-11-2018, 08:28 AM   #14
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Had same. First time was because the exhaust elbow was corroded and sending water backwards through the overflow and into the bilge. You wonít catch this unless you see more water in the bilge / shutting off quickly after start. That generator has thermal protection that shuts down to prevent overheating. Second time was on initial startup after winterization. Forgot to note that I turned off both sets of switches.
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Old 06-11-2018, 11:02 AM   #15
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charged all night and still no power
will have to start digging into and testing wiring

bummer
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Old 06-11-2018, 11:07 AM   #16
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Crap!
I just realized something.

I forgot the switch the main power from shore to Gen AC when I left the dock.

If theres no ac to the charger then its running its own battery out which would explain the absence of power to the control panel

Ill bet thats what happened

Now im gonna head down. Its been charging all night
Doubt it. The symptoms you have described are all DC side related.
A loose or corroded terminal likely.
Loss of the battery charger alone would take months to drain the charge unless to battery was completely toast.
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Old 06-11-2018, 11:11 AM   #17
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I believe on the WB there is a 15A fuse on the DC side. If that blows, then it shuts the panel off which will probably shut everything down. On my NL there is a 15A breaker on the DC side.

Tom
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Old 06-11-2018, 11:41 AM   #18
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I believe on the WB there is a 15A fuse on the DC side. If that blows, then it shuts the panel off which will probably shut everything down. On my NL there is a 15A breaker on the DC side.

Tom
This is what im thinking. Im missing a fuse someplace... and on my last one i do recall a black cap on the control head that had a fuse in it

New boat doesnt have as good of access so will have to hunt around a little

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Old 06-11-2018, 12:33 PM   #19
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Click image for larger version

Name:	10amp Circuitbreaker.jpg
Views:	43
Size:	92.8 KB
ID:	77335looked through the parts manual and found a 10amp circuit breaker.

Does anyone know if this would cause total dc shutdown?
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Old 06-11-2018, 01:25 PM   #20
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My 8KW Nordhavan had a 20KW and an 8KW WB generator. One day the 8KW shut down, called a tech. Took him about 3 minutes of checking, I had to have the generator end rebuilt. As I recall, it really wasn't that expensive and the tech was the one who got all sweaty. All the problems went away.
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