T509 Rectifier

Discussion in 'Technical Help' started by Motil, Jul 15, 2020.

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  1. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    Hello,

    Last weekend I planned a nice ride with some friends but I only got 9 miles away from home. Suddenly my dashboard was gone, no spark whatsoever.

    When I came home I removed the seat I saw that the battery was seriously damaged. Cracked on both sides and leaking. Luckily no damaged cables or anything. i replaced the battery with a newer gelversion and wanted to measure if evertything is ok (i'm an electrical noob).

    The voltage of the battery was 14 V (it's brandnew and fully charged). When starting it dropped to 12 and when iddling it's ok again but when revving it goes up to 15-16V!
    So I think the rectifier is the problem? I know what these should look like but I can't find it on my bike :confused:. Where should it be located?
    Should I check anything further after renewal
     
  2. Tricky-Dicky

    Tricky-Dicky Crème de la Crème

    Dec 12, 2016
    2,441
    1,000
    Norfolk UK
    Cant help with the location i'm afraid but it should look like this and yes it does sound like the reg/rec as if battery is fully charged it should be charging at less than that 14.4v max and normally very variable due to loadings...

    [​IMG]
     
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  3. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    Thanks for your replies. I hope someone has a pic if the location because I couldn't find it. perhaps there is an aftermarket rectifier installed at a different location. Sounds so stupig. knowing what to look for but can't find it.

    I will remove the fueltank to see if it's muffeled under there
     
  4. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    What year is your bike @Motil ?
    Your reg/rectifier could be built into the alternator. :)
     
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  5. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland

    It's a '97 model.

    Do you have any idea where I can find a new one or is OEM the only way to go? If I look online there are only conventional ones offered like the picture above. Is there also a how-to for this job that you know about?
     
  6. Tricky-Dicky

    Tricky-Dicky Crème de la Crème

    Dec 12, 2016
    2,441
    1,000
    Norfolk UK
    Interesting! Googled 97 Triumph T509 regulator/rectifier and came up with this pic....looks almost car type.

    [​IMG]
     
  7. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    I think our resident experts @Duckadiledundee and @Smilinjack can point you in the right direction as they’ve just recently fixed Duck’s bike successfully. :grinning:
    I wouldn’t go for a new one as they’re about £350, but Duck got a S/h one with warranty for a good price.
    I’m sure one of the ‘sperts can sort you out :p
     
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  8. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    It is, it’s derived from a car system as are most of the electrics, ECU etc.
     
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  9. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    Even easier if you’re not bothered about the colour of your replacement coolant. :p :joy:
     
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  10. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    Thank you all for your help. Now I understand why I couldn't find the rectifier :oops:

    I wil look for one on ebay etc and replace it. The Nick Vire vids are indeed helpful. As soon as I find a part I will update.
    Thanks!
     
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  11. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    And so the saga continous...

    With your help and youtube I replaced the alternator (part 1 in the drawing) with a tested secondhand one. Also replaced the colandt ofcourse. Which had a better colour that in Nicks vids :p But at the end it didn't work. I still get 15-16V at the battery. i'm a bit out of ideas actually :sweat:

    Did I swap the wrong part of could I have checked something else?
     
  12. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    What voltage are you getting on your battery with it disconnected?
    Did you change the whole alternator?
     
  13. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    I will check this evening for the voltage when disconnected.

    What I measured so far (my measuring device only does whole volts):
    14V at the battery (new gel-type battery fully charged with Optimate)
    13V when starting
    15-16 volts iddling and slightly revving (approx 2000 rpm)
     
  14. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    I think it might be worth you investing in a more accurate multimeter mate. :p
    You can get a half decent one for £25 and it’ll give you the confidence that you’re getting accurate readings, as from what you’re telling us I’d say the new alternator you’ve got is faulty.
    You should only be getting about 14.5Vdc maximum with the bike running. Anything more and it’ll fry your battery again in short order.
     
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  15. Rocker

    Rocker Elite Member

    May 1, 2016
    1,659
    800
    Suffolk
    As freck and thought the battery should be 12.8 volts
     
  16. D'Ecosse

    D'Ecosse Senior Member

    Jun 23, 2019
    270
    113
    CA, USA
    Definitely validate those voltages with a different meter
     
  17. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    You were all right. It was the meter that was faulty. A more accurate meter showed a 14-14,5V max. On top of that no leakages in the cooling system (knock on wood) so the Triple is up and running again:party::yum

    Thank you all for your help!
     
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  18. freck

    freck Elite Member

    May 4, 2017
    1,719
    750
    Preston, Lancs, UK
    So you may well have bought a replacement alternator for nothing? :confused:
    Ah well, ya live n learn. :p
     
  19. Motil

    Motil New Member

    Sep 24, 2019
    12
    3
    Vlissingen, Holland
    Maybe so. It has cost me 50,- and some coolant so not to much financial damage. Im just happy that it runs again ;)
     
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