Alternator/generator voltage ajustment.
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- Staff Sergeant
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- Joined: February 5th, 2014, 8:56 am
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Alternator/generator voltage ajustment.
I don't know if my A2 has an alternator or generator and apart from being big and round I can't really describe it to anyone except on the right hand edge it has a hole in the body and an arrow pointing counter clockwise and the words INCREASE VOLTAGE. With the engine running the gauge marked BATTERY GENERATOR always reads fully charging, right over to the right in the red segment. This doesn't seem right, can I adjust the output with a screwdriver in the hole described earlier. I'm used to having a voltage regulator in a black tin box somewhere , I'm old. My batteries are one new and one good. Help once more please.
Re: Alternator/generator voltage ajustment.
Never go completely by the dash gauge since they are known to be inaccurate. They are there mainly to let you know there may be a problem and then you need to follow up with real instruments. So get a real meter and see what the voltage at the batteries is with it running, it should be close to 28 volts. If above that then the dash gauge is accurate and you will need to adjust the voltage regulator. And what you will have on an A2 is a 60 amp 24 volt alternator. Do a Google search for "DA_Pamphlet_750-33". I have the file but I don't know how I would get it to you. I think it is too big to email. It will have all of the procedures you need for troubleshooting the alternator.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
Re: Alternator/generator voltage ajustment.
I'd put a voltmeter on the batteries to read the voltage, 28volts, approximately which shows the charging voltage,2 volts per battery.This lets you know the charging system is working, more or less, use the slot to adjust.The TM-20 has a brief description
mark
1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416
1968 m274A5
1960 m151
1981 m151A2
1964 m416
1971 m416
Re: Alternator/generator voltage ajustment.
Auzziemutt,
when you've made sure that the batteries are in good condition, check the voltage using a multimeter when the engine is running. If the voltage is too high or too low, use the tool as described below to adjust the alternator output.
Ken
when you've made sure that the batteries are in good condition, check the voltage using a multimeter when the engine is running. If the voltage is too high or too low, use the tool as described below to adjust the alternator output.
Ken
Kind regards....
Ken
Always wanted - Details and pictures of M416 Trailer data plates & M151 data plates & body-tags for my research. Thanks!
Contact address - - muttguru@aol.com
Note for 2023..... Ken..."Less Stress - More Exercise!"
Ken
Always wanted - Details and pictures of M416 Trailer data plates & M151 data plates & body-tags for my research. Thanks!
Contact address - - muttguru@aol.com
Note for 2023..... Ken..."Less Stress - More Exercise!"
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- Sergeant First Class
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Re: Alternator/generator voltage ajustment.
My voltage/battery gauge one moment will be in the green zone and then drift up to the red zone. Not believing it I connected a multi meter to the lines. It never gets above 28 volts. It will vary some depending on engine speed and other things that can be using power. The gauges are just not precision instruments. Most GI's don't care either.
45' MB, ??' MBT, 47' CJ2A, 48' CJ2A,
51' M38 #1, 51' M38 #2, 51' M100,
52' M37, ??' M101A1 (1st Gulf War Vet),
53' M38A1, 53' M211, 65' M151A1, 67' M416,
MVPA #31724
51' M38 #1, 51' M38 #2, 51' M100,
52' M37, ??' M101A1 (1st Gulf War Vet),
53' M38A1, 53' M211, 65' M151A1, 67' M416,
MVPA #31724
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- Staff Sergeant
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- Joined: February 5th, 2014, 8:56 am
- Location: Brisbane Australia
Re: Alternator/generator voltage ajustment.
Thank you men, I checked the output with the motor running and it read 28.4 volts and that's close enough for me. It just didn't look right with the needle reading almost off the gauge .
Re: Alternator/generator voltage ajustment.
I have always said that the only truly accurate military instruments are gunsights and soldiers brains.
1964 M151A1
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
1984 M1008
1967 M416
04/1952 M100
12/1952 M100- Departed
AN/TSQ-114A Trailblazer- Gone
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- Sergeant
- Posts: 85
- Joined: January 8th, 2013, 10:03 pm
Re: Alternator/generator voltage ajustment.
I will add one more thing. You did not mention taking a plug out of that hole to adjust your voltage. Get the proper size pipe plug with a recessed head for an Allen wrench. That hole leads right down to some electronics that will not like liquid debris falling on it. Kevin.
Kevin B. Emdee
368 Big oak Trail
Radcliff, KY 40160
1-270-877-0813
kevin.emdee@comcast.net
MVPA #530
1968 M-35A2
1968 M-543A2
1944 WC-56
1970 M-274A2
1961 M-151
368 Big oak Trail
Radcliff, KY 40160
1-270-877-0813
kevin.emdee@comcast.net
MVPA #530
1968 M-35A2
1968 M-543A2
1944 WC-56
1970 M-274A2
1961 M-151
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- Staff Sergeant
- Posts: 123
- Joined: February 5th, 2014, 8:56 am
- Location: Brisbane Australia
Re: Alternator/generator voltage ajustment.
Gettysburg, I have wondered about that for a long time. Best I get something to plug it up. Thanks.