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Old 12-15-2011, 04:50 PM   #11
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Re: Weird beep during glowplug warm up (dt466)

When the bus is running the voltmeter on the bus (or measured at the batteries with a multimeter) should be something north of 13 volts.
So I'm not sure where you get this ...
Quote:
The alternator is producing electromagnetic field, so it is doing something from whaat I understand. It is just not making it to the engine/batteries.
I'd suspect the alternator.
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Old 12-16-2011, 08:28 AM   #12
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Re: Weird beep during glowplug warm up (dt466)

Previous post is correct. Also, you can pull the alternator and take it in to autozone, etc. I don't remember if kenect's tests them as he was originally from Greenacers by Coos Bay. And if you want a cheap 12v alternator that is new, you can install a 1 wire GM alternator -the late 70's one, and get a higher amp one instead of paying 300..... Of course you can take a lawn mower with a pulley and a cheap 1 wire chev alternator and make a great 12v generator... but thats not part of this topic.
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Old 01-03-2012, 05:23 PM   #13
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Re: Weird beep during glowplug warm up (dt466)

We are taking her in to check soon, can't do the alternator ourselves here.

The magnetic field idea was from a guy at the local marina who works with heavy trucks and farm equipment.

One thing that keeps popping up in other avenues of research to test is the voltage regulator (Supposed to tell the alternator to kick in/increase output). That it could be a separate unit, or part of the alternator depending on your model, and that it is a common cause of problems when the alternator is actually working. Does anyone know where that would be on this model? Trying to minimize the amount of time spent in the shop.
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Old 01-04-2012, 10:34 AM   #14
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Re: Weird beep during glowplug warm up (dt466)

this is what i got. saved my new replaced batteries. luckily warranty covered the first pair that were killed from letting it sit over winter hooked up..

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Old 01-04-2012, 10:48 AM   #15
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Battery cable disconnnect not good

As pictured, cable disconnect will not carry the 12-1500 amps required for engine starting. Easy method is removing any cable.
Best method for over winter storage is trickle charger and 24 hour timer. Charger comes on 2 times per day for an hour or two.
Fully charger battery is 12.6 volts............. Frank
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Old 01-04-2012, 10:53 AM   #16
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Re: Weird beep during glowplug warm up (dt466)

Most school buses have a master disconnect switch on the frame.
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Old 01-04-2012, 12:45 PM   #17
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Re: Weird beep during glowplug warm up (dt466)

Quote:
Originally Posted by Dain
...
One thing that keeps popping up in other avenues of research to test is the voltage regulator (Supposed to tell the alternator to kick in/increase output). That it could be a separate unit, or part of the alternator depending on your model, and that it is a common cause of problems when the alternator is actually working. ...
You most likely have a 'one wire' Delco alternator, the regulator is internal.
The alternator is generally viewed as a 'works or it don't' part and replaced as a unit, rather than replacing components within it.

Tom
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Old 01-07-2012, 06:02 PM   #18
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Re: Weird beep during glowplug warm up (dt466)

Quote:
Originally Posted by wtd
Quote:
Originally Posted by Dain
...
One thing that keeps popping up in other avenues of research to test is the voltage regulator (Supposed to tell the alternator to kick in/increase output). That it could be a separate unit, or part of the alternator depending on your model, and that it is a common cause of problems when the alternator is actually working. ...
You most likely have a 'one wire' Delco alternator, the regulator is internal.
The alternator is generally viewed as a 'works or it don't' part and replaced as a unit, rather than replacing components within it.

Tom

Ours has a red cable, a white cable, and a small green wire running into it. Is that a one wire?
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Old 01-07-2012, 06:38 PM   #19
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Re: Weird beep during glowplug warm up (dt466)

Quote:
Ours has a red cable, a white cable, and a small green wire running into it. Is that a one wire?
Got me That 'one wire' thing's kind of a misnomer, sorry. Most have a coupla wires coming off of them. I was kind of 'assuming' since the few dt466's I've seen had Delco alternators on them.

Doesn't it have a tag with manufacturers info or maybe a name/number stamped in it somewhere?
Would be easier knowing what brand it is.
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Old 01-08-2012, 10:34 AM   #20
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Re: Weird beep during glowplug warm up (dt466)

above pictured disconnect will work, but i have found that they often corrode between the two parts, which aint good cause the engine might not crank over, etc.. For many years now, i have put regular high amperate disconnect switches that turn batteries off on little used heavy equipment. They aren't cheap, but work excellent.
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