How To Check If An Alternator/Generator Is Charging A Battery
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- Опубликовано: 3 фев 2020
- Instagram: @camshaft_farming.mechanical
In this video I show the basic procedure used to check if an alternator/generator is charging a battery, demonstrated on a Massey Ferguson 135, 12 volt system.
This procedure can be used on both 12 and 24 volt charging systems on either an alternator or generator. All you need is a multimeter or a test light that can read voltage. Test the charge by putting your chosen testing device between the positive out let on the alternator/generator and a good earth such as engine block or chassis then with the engine running check the volts being produced. This procedure will give you an accurate measurement of the charge you should be receiving at the battery and can aid in further diagnosis of a faulty charging system.
Disclaimer, I may be a qualified mechanic but I hold the right make it up as I go and am not held responsible for issues arising from advise given in these videos. All mechanical repairs should be carried out by qualified professional. 
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Thanks for the video. It's good to see you using a quality DVM to test equipment. My (non import) DVM scrambles digits anywhere near my generator.
Very practical and helpful. BTW, you could use the 20 VDC range and get a little more accuracy, but certainly your way works just fine. Thank you.
Mate, did you replace the generator? I have a similar problem with my Massey Ferguson, the genny is only pumping out 2.6v. Thanks
Yes I did end up putting a new one on it
You can test gen as follows, disconnect arm and field wires, w gen spinning jump F to ground or
ARM if there are no sparks and gen does not load down, residual field is GONE and field must be flashed b4 she puts out, I mean the generator.
can you show how to start tractor on an anlaser/starter with a screwdriver??
usually you just bridge the gap at the starter. beware this sparks and eats away at the screwdriver
How about the control box
Hi great video my tractor wont charge my battery been like it for couple of years i checked it today i noticed no wire going from alternator to battery would that cause it
There will be a wire going to a voltage regulator I would inspect all the wiring and make sure there's no breaks
@@CamshaftFM Thank you will that be the B+ or D+ going to regulator
Not sure off the top of my head. Have a look on google there are plenty of diagrams that show what each wire is.
This alternative amp how
Sirrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr how many amps can give these alternator?
You need to start your videos with "Hey you big, beautiful bastards, here's me face" like Ozzy Man Reviews. Then mention something about Dingo's and baby's.
Hey there if I have a 6v battery on my tractor (a farmall) what should that read? The battery reads about 9-10 but The generator reads at roughly 0.9 I am assuming my generator is shot?
Check the reading at the battery as well
@@CamshaftFM the reading at the battery was roughly 9ish which on a 6v I assume is alright? Generator couldn't even read a 1 but the regulator box read well. That's just my assumption being new to this!
@@nicktrapierakis3004 if it’s reading 9 at your battery it should be working fine if that’s with the engine running
@@CamshaftFM well I believe the battery is ok but the generator pulled less than 1 plus the moment I remove the ground wire from the battery it instantly goes off and my amperage meter is straight 0. Starts up great... Until it stops haha.
@@nicktrapierakis3004 if it’s not getting 9v while the engines running then I’d say there’s a problem with your gen but check all the wiring and regulator just the same
may of been a stuffed genny, but no mention of the regulator?.
There are two types of genz. A style has field coming off the Amature terminal. B style, one side of
the field is grounded and must be hookt to armature to get field to magnetize field poles and Gen
will put out.
That generator doesnt look like the original by the brackets, plus it looks way too small physically.
Can we please have a vid with :- an Englishman 2) without an engine running !
Greetings,
alternators to some extent work different than generators, if you have a generator, which you do,
it will charge even when the battery is dead, an alternator will NOT do that. reason being you
need a little bit of electricity in the battery to excite the alternator's rotating field winding.
That gen you have is an internally exciting machine and requires no external current to get it to charge the battery. If the gen is not putting out proper voltage, there could be a grounded
armature or field winding. The gen can lose its residual field and may need to have its field
flashed. If you can put 12 volts+
U are talking too laud - cant hear the tractor propperly