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Old 21-10-2015, 15:12   #31
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Re: Engine circuit breaker tripping

It quite obvious, that over current tripping circuit breaker. It is quite elaborate to troubleshoot fault, but there is one quick solution .
Something is faulty and needs replacing , perhaps fixing.
No way around it.
Try my solution, instal 50 Amps breaker and watch the smoke.
Replace/ fix problem. That's how we professional cutting repair time.
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Old 21-10-2015, 15:36   #32
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Re: Engine circuit breaker tripping

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Originally Posted by Tikka View Post
It quite obvious, that over current tripping circuit breaker. It is quite elaborate to troubleshoot fault, but there is one quick solution .
Something is faulty and needs replacing , perhaps fixing.
No way around it.
Try my solution, instal 50 Amps breaker and watch the smoke.
Replace/ fix problem. That's how we professional cutting repair time.
CAUTION the circuit trips after a period of time elapses this is an overload situation, bypassing the circuitbreaker for a long time period may cause damage to the wiring loom , or fire.



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Old 21-10-2015, 17:37   #33
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Re: Engine circuit breaker tripping

Westerbeke diesels run with an electric fuel pump. I have had similar problems with my W 82B4. The breaker will trip due to a bad ground. The wire loom has a plug that connects the engine to the control panel. It's usually close to the engine. The plug connections can corrode causing resistance, This increases the amp draw thru the breaker and it trips. I removed the plug and butt spliced all the loom wires. Solved the problem. Also check the fuel pump wiring integrity and the fuel pump itself for a short.
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Old 22-10-2015, 05:49   #34
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Re: Engine circuit breaker tripping

And the winner is:
None of the above.
After considerable trial and error, pursuing all suggested reasonable possibilities ( not including the intentional engine room fire), and considerable jiggling of the wiring, the alarm buzzer came on- indicating the starter was ready to do its thing, and the willing- but- unled engine would follow.
Found a couple places where the wire loom had shifted, thus providing opportunity to chafe against the engine block and/or manifold. Which it did, which grounded, which....- well, you get the picture.
Re-loomed the questionable spots, replaced a small connector to the solenoid which had broken in all the on-and-off, and ran the engine without hiccup for 65 minutes.
Lesson: always look for the simplest thing first. Would have been found if I had checked for continuity from each of the eight terminals in the 8 pin harness connector to the engine circuits. Five minutes max.
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Old 22-10-2015, 06:03   #35
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Re: Engine circuit breaker tripping

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Originally Posted by Mickeyrouse View Post
And the winner is:
None of the above.
After considerable trial and error, pursuing all suggested reasonable possibilities ( not including the intentional engine room fire), and considerable jiggling of the wiring, the alarm buzzer came on- indicating the starter was ready to do its thing, and the willing- but- unled engine would follow.
Found a couple places where the wire loom had shifted, thus providing opportunity to chafe against the engine block and/or manifold. Which it did, which grounded, which....- well, you get the picture.
Re-loomed the questionable spots, replaced a small connector to the solenoid which had broken in all the on-and-off, and ran the engine without hiccup for 65 minutes.
Lesson: always look for the simplest thing first. Would have been found if I had checked for continuity from each of the eight terminals in the 8 pin harness connector to the engine circuits. Five minutes max.
AWESOME!!!

Congrats on what could have been as easy as it was... Or a tad tougher...

Yea.... so the continuity test mighta been the smartest first route... But you were still going to get grounds there...
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Old 22-10-2015, 06:22   #36
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Re: Engine circuit breaker tripping

And the ground(s) would have been what I wanted to know about.
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Old 22-10-2015, 06:36   #37
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Re: Engine circuit breaker tripping

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And the ground(s) would have been what I wanted to know about.
Well kinda.... Didn't look at the diagram, but we're talking leads from the harness going to solenoids and motors... All giving ground readings with continuity... start recording/comparing resistance readings and you got sumthin'!

She's purrin'... Time for a beer and a "life is good" moment....

(while you have the chance!)

Thx for the Thx!
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Old 22-10-2015, 13:02   #38
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Re: Engine circuit breaker tripping

Great news thanks for letting us all know how you fixed it

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Old 22-10-2015, 17:47   #39
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Re: Engine circuit breaker tripping

So....back to varnish
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Old 23-10-2015, 06:29   #40
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Re: Engine circuit breaker tripping

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So....back to varnish

***sigh***

Well... at least you can visually see measurable progress with this fun task...
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Old 24-10-2015, 12:59   #41
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Re: Engine circuit breaker tripping

Congrats!!
Many electrical problems turn out to be "mechanically" caused-chafe,corrosion,etc.

Sorry you had to return to the varnishing..... / Len
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Old 27-10-2015, 05:58   #42
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Re: Engine circuit breaker tripping

A LOT easier to get to than the engine...besides, only your pride stops you there.
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Old 15-12-2015, 12:33   #43
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Re: Engine circuit breaker tripping

I have a westerbeke 63C circa 2000.. if your engine is the same vintage, chances are you have the same electrical system I have. The CB in my system is 20 amps rated at 77 degrees F not C I would venture to say the breaker has had it I had mine fail to restart after a 2 hour run. problem was the CB temp rating should have been 77 degrees C not F. Westerebeke supply was klixon. Westerbeke would not even discuss the issue.

I would start there. Blue sea makes a replacement breaker that is an exact fit about 60 $ rate 77 C.

If that is not it try an ammeter either in series or with an amp probe to check the coil on your fuel solenoid. that will at least eliminate that issue.

Westerbeke did say they have never had one fail.

Hope this helps
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