BMW K bikes (Bricks)

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1Back to top Go down   Bad voltage regulator  Empty Bad voltage regulator on Mon Aug 19, 2019 10:20 am

Heresy23

Heresy23
Silver member
Silver member
So all He lights on my k100 dim and brighten dependent on the speed of my engine..is this a for sure sign of a bad rectifier ?

    

2Back to top Go down   Bad voltage regulator  Empty Re: Bad voltage regulator on Mon Aug 19, 2019 12:04 pm

kioolt

kioolt
Silver member
Silver member
This could be a sign that your starter brushes are worn or that your stater commutator is very dirty.  The starter acts as a ground path for the load shed relay's control circuit.  If you have certain starter problems the load shed relay will chatter while the bike is running.  The load shed relay controls power to the headlight.  While it is chattering the headlight will either cut completely off or dim.  Have you had any starter problems where the starter would not spin?  That is one sign.

Try checking the voltage at the battery when the problem is happening.  If the voltage is basically steady then I wouldn't suspect the voltage regulator.


__________________________________________________
2004 R1150RT 186,800 miles 
1991 K100LT 128,700 miles
1982 R100RT 106,900 miles
Total 422,400 BMW miles

AMA,BMWRA,BMWMOA


The cheapest thing on a BMW is the nut that connects the handlebars to the seat.
    

3Back to top Go down   Bad voltage regulator  Empty Re: Bad voltage regulator on Mon Aug 19, 2019 1:22 pm

Heresy23

Heresy23
Silver member
Silver member
Ok so pretty much the normal procedure to check the regulator ?thanls !


__________________________________________________
85’k100 RT 73k
    

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