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BARGES: All about barges and barging - building, buying, maintaining, equipment, handling on the water, etc.
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TOPIC: DAF 575 questions

DAF 575 questions 13 Nov 2019 21:20 #111391

  • Pete Milne
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I don't have a separate regulator and the alternator is producing about 12V instead of 14.4V. The tacho is driven from the alternator. When the engine had trouble starting on Monday, I realised the batteries have been just losing charge for a week, since the Tacho died! Now I'm running a charger every night from the shore when I have it, until I get home in a couple of days and replace the alternator. I suspect the (wet cell) batteries are almost EOL as they dropped to 10V at one point.

Pete

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Pete Milne, Quo Vadis , Gent.

DAF 575 questions 11 Nov 2019 22:28 #111356

Hi Pete......does your alternator have a built-in regulator or a separate (smart) regulator? Often the tachometer is driven by electrical pulses from the alternator so when the alternator stops charging the tach reads zero. This happened to us. I found the problem was caused by the smart regulator not supplying any current to the alternator field, hence no alternator output. The problem was no 12V supply to the regulator due to a corroded fuseholder. Replaced fuseholder and fuse, problem fixed! Hope your problem is this simple!

Trevor
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DAF 575 questions 11 Nov 2019 20:59 #111353

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Thanks Andy,

Naturally a different alternator and very different oill filter !
As I have a flat battery at the end of a long day on the Hollands Diep (actually several long days since the tacho stopped) I think the alternator is dead. Oil filling is a minor thing!

Pete
Willemstad
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DAF 575 questions 05 Nov 2019 21:47 #111184

If your oil filter housing looks like this (attached 2) then the top red painted bolt can be removed and oil topped up through there.

The yellow lead is the tacho sensing lead - (attached 1) but you may have a totally different alternator!
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Best Wishes
Andy Soper
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mv Neeltje
Coookham
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DAF 575 questions 05 Nov 2019 19:42 #111176

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I'm working on a DAF 575 in an unfamiliar boat.
  • I normally top up oil in my own through the cap on the rocker cover. This one has a w'h floor above the cap, making it hard to access (though not impossible). Is there an alternative top-up point?
  • The tachometer has stopped reading in the last few days travel. Not important as I use my ears - but where do I find the connection on the engine, which I suspect has become disconnected

TIA
Pete

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