
Mf14 Charging Problem
#1
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Posted June 29, 2012 - 07:39 PM
any idea's?? I'm lost, thinking i have a bad regulator but why would it be going so crazy? also whats a good replacement regulator? the one at NAPA was like $100....
Thanks guys!
-Pat
#2
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Posted June 29, 2012 - 07:55 PM
Just out of curiosity, I assume you were on DC, not AC volts. The other thing that can go wrong in DMM's is a situation where unfiltered ripple in a DC circuit can cause it to go crazy. Seems to happen more in cheaper units, but had a Fluke one time that I had to be very careful trusting because of it.
#3
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Posted June 29, 2012 - 08:29 PM
Edited by Alc, June 29, 2012 - 08:30 PM.
#4
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Posted June 30, 2012 - 04:33 AM
I was also checking on the battery terminals. Put new ends on right before I put the new battery in.
I think it has to be something simple, got a wiring diagram lastnight and will be looking some more today. Keep the ideas coming! Thanks again!
-Pat
#5
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Posted June 30, 2012 - 04:56 AM
As far as DVM readings go the best type of meters for reading AC voltages are the True RMS type. The average reading meters are fooled by waveforms with high crest factor(peak to average ratio) Unfortunately the True RMS feature is only available on the more expensive models. I've also seen meters that are sensitive to nearby arcing or contact closures, producing a brief high voltage reading in these conditions.
- Alc said thank you
#6
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Posted June 30, 2012 - 05:37 AM
#7
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Posted June 30, 2012 - 08:48 AM
Brian are you talking about interfearance from maybe the spark plugs , kind of like old car radioes with solid wires ? Al
That can certainly affect things, one trick (doesn't always work) is to wrap the device (in this case, meter) in tinfoil and ground the foil with a clip lead. Give it a tinfoil hat, so to speak.
They make really expensive grounding mats that can be used, but this is a cheap second best.
In this case, I'd say Brian is right on connections issues, unless you have a contactor style regulator, then the arcing and field collapse from the contacts can give off some wild stuff.
Do you happen to have an old fashioned analog meter around?
- Alc said thank you
#8
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Posted June 30, 2012 - 09:00 AM
Brian are you talking about interfearance from maybe the spark plugs , kind of like old car radioes with solid wires ? Al
Al, It could be from wires. It could be from large charge current pulses running through the nearby wires. With a DVM a pulse received at the meter leads can end up causing a problem with the conversion circuitry. With an analog meter it will mechanically filter (average) high speed pulses. Without being there to see what is happening it's hard to troubleshoot something like this. 200volts just doesn't sound likely.
- MH81 and Alc have said thanks
#9
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Posted June 30, 2012 - 12:20 PM
Thanks for all the help guys!!
-Pat
#10
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Posted June 30, 2012 - 01:59 PM
#11
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Posted June 30, 2012 - 08:14 PM
Here is a place I get parts. Either of the "Late Style" at the top will work fine. If you want similar to your OE regulator, you'd need to scroll down the page to this one:
Part #AHAKH6001
TRANSPO - PREMIUM QUALITY - OEM SPEC OR BETTER - HAS FINS FOR EXTRA COOLING $27.13 + $7.95 shipping
But before ordering, please contact Bob's Lawn & Garden (site sponsor) or another site sponsor to see if they can help.