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The TTR250 FAQ web pages -> TTR250 -> Repairs and maintenance -> No battery charging ...
Post Info TOPIC: No battery charging ...
Konrad


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No battery charging ...
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Hi guys

Now the fun begins ... I'm trying to find some more voltage on battery than 12,5V ... when engine is running.

Does anybody know that stator coil should or shouldn't have a shortcut to it's case/ground ?

I think on my TTR one of tree stator circuits has a puncture to the housing.

I measured all coils, between them, they seems to be ok - but when I check every coil to housing there's something very strange because one of them seems to be shorted to the housing (has 0,4Ω).

Rest of them has 1.6Ω between them and between separate to housing.

Regards

Konrad



-- Edited by Konrad on Friday 7th of August 2020 01:34:12 PM

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ttboof


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Pretty sure the AC coils  shouldnt be grounded 

Sounds like you might be on the right track 

As long as you have checked the fuse is OK 

The voltage should climb with revs and max out at around 14.2volts 

Leaves the AC coils or the regulstor/rectifier .or dodgy wiring 

Number one below AC coils 

Number two reg/rect 

IMG20200808161814.jpgIMG20200808161853.jpg

 



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Konrad


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Finally yesterday I took apart the stator housing ... and found root cause of circuit puncture.

IMG_20200810_182615.jpg

 

Cable was touching stator housing here:

IMG_20200810_182624.jpg

IMG_20200810_182635.jpg

IMG_20200810_182800.jpg

Repaired broken cable insulation with this tape:

IMG_20200810_183035.jpg

IMG_20200810_183158.jpg

IMG_20200810_183620.jpg

Now stator has right resistance like in the book! There is no punctures to housing.

IMG_20200810_183759.jpg

 

Job done! Charging works very well now, in meantime I have changed also voltage regulator witch wasn't necessary to be sure that everything is good and new.



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ttboof


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Top job good it's sorted 

Even better the pics will help the rest of us 

Thanks 



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TTRfan


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thumbsup.gif thumbsup.gif thumbsup.gif thumbsup.gif

Great sleauthing and thanks for some really helpful photos!



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Exeter, Devon, UK

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