alternator magnet test
#1897146
08/22/15 03:43 PM
08/22/15 03:43 PM
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Joined: Oct 2003
Posts: 614
ont,canada
mopartuner
OP
mopar
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OP
mopar
Joined: Oct 2003
Posts: 614
ont,canada
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If a wrench doesn't get pulled into the back of the alternator it means its no good......why?is there any other reason this isn't magnetized?
410 pump gas solis flat tappet cam 10.95 so far
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Re: alternator magnet test
[Re: mopartuner]
#1897165
08/22/15 04:27 PM
08/22/15 04:27 PM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Don't think that's correct. Alternator generates alternating current then rectifies through diodes.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: alternator magnet test
[Re: 67_Satellite]
#1897259
08/22/15 07:28 PM
08/22/15 07:28 PM
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Joined: Jan 2003
Posts: 403
southern Maryland
keefe
mopar
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mopar
Joined: Jan 2003
Posts: 403
southern Maryland
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If I remember correctly.. if the alternator is good it will cause a magnetic field regardless of the voltage regulators condition. That's how we use to trouble shoot a bad alt. or reg.
1971 duster twister 440, 3380#,509 M/P hyd,906's,full Exhaust,11.06@117.46 1/4,6.95@ 97.03 1/8,1.497 60ft.....
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Re: alternator magnet test
[Re: keefe]
#1897556
08/23/15 10:21 AM
08/23/15 10:21 AM
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Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
Leon441
master
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master
Joined: Nov 2004
Posts: 4,330
Lynchburg, VA
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Always used a meter.
Didn't realize the stator shaft poles when charging.
Career best 8.02 @ 169 at 3050# and 10" tires small block power.
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Re: alternator magnet test
[Re: mopartuner]
#1897644
08/23/15 01:15 PM
08/23/15 01:15 PM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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If a wrench doesn't get pulled into the back of the alternator it means its no good......why?is there any other reason this isn't magnetized? If it pulls, it means everything is working. If it doesn't, there is a problem, but it doesn't tell you where. Could be alternator, regulator, field wiring or B+. Just a quick Good/No good check.
[image][/image]
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Re: alternator magnet test
[Re: sgcuda]
#1897657
08/23/15 01:26 PM
08/23/15 01:26 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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If a wrench doesn't get pulled into the back of the alternator it means its no good......why?is there any other reason this isn't magnetized? If it pulls, it means everything is working. If it doesn't, there is a problem, but it doesn't tell you where. Could be alternator, regulator, field wiring or B+. Just a quick Good/No good check. I never heard of the test of if its magnetic its good.. you have to energize the field to create the field... I always use to try a full field test first at the regulator.. if it works then change the reg.... a vom can test a lot of things 
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Re: alternator magnet test
[Re: mopartuner]
#1897662
08/23/15 01:30 PM
08/23/15 01:30 PM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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Try putting a screwdriver blade to the back of any alternator. It will always pull down on a working charging system. This is old school I learned from my first boss when I was in the gas stations and regular gas was still available (am I showing my age a little?).
[image][/image]
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Re: alternator magnet test
[Re: mopartuner]
#1897700
08/23/15 02:33 PM
08/23/15 02:33 PM
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Joined: Jan 2003
Posts: 5,439
So Cal
Sinitro
master
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master
Joined: Jan 2003
Posts: 5,439
So Cal
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Keep in mind... That an alternator may still have some output but be below spec...Put a voltmeter on it, should have 13.5-14.5V output. If U dont have a voltmeter, check with Harbor Freight they have a give-away one or sells for $5.. Just my $0.02... 
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