Think I found problem ?
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Tourer
Joined: Sep 2016
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From: FL East Coast /Western NC
Think I found problem ?
some of you might remember i had been having problems with my heated grips for well over a year now.. when engine/batt lights began to come on and off and grips began to not work every day i decided to replace them ( dealer )... all else checked out fine at time... then with new grips same thing on a NC ride 2 months later... voltmeter would go down then back up and be fine for another month or so... grips worked on and off... lights would come on and then go off when i turned grips off..starting my bike this am i noticed voltmeter stuck on 10 at all rpms... first time for this... i tapped on the regulator and it jumped to 14 and back to usual movement through the revs.... could this have been my problem all along ? and can these things go bad gradually like this ? it has driven me nuts... i suggested to harley tech when he ran complete diag on it month ago but he said he could not replace something that didnt show bad... understandable... thanks.. sorry a bit long
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From: Vermont
What month was your bike built?
Harley-Davidson Motor Company has recalled and will replace voltage regulators on certain 2012 motorcycles. This recall applies to all 2012 Harley-Davidson models (except V-Rod) built approximately October 1, 2011 through March 31, 2012. Harley-Davidson Motor Company is sending letters to registered owners of affected products in the United States notifying them of this condition and instructing them to contact their dealer for the inspection. This program was effective beginning June 11, 2012. The company says that the services delivered under this product program will no longer be rendered at factory expense after two years from the date of the bulletin, which will be June 11, 2014
Harley-Davidson Motor Company has recalled and will replace voltage regulators on certain 2012 motorcycles. This recall applies to all 2012 Harley-Davidson models (except V-Rod) built approximately October 1, 2011 through March 31, 2012. Harley-Davidson Motor Company is sending letters to registered owners of affected products in the United States notifying them of this condition and instructing them to contact their dealer for the inspection. This program was effective beginning June 11, 2012. The company says that the services delivered under this product program will no longer be rendered at factory expense after two years from the date of the bulletin, which will be June 11, 2014
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You would be surprised how many problems can be found by tapping with a small hammer or the end of a screwdriver.
Especially electrical demons, they almost always results of some sort of bad connection, whether it be internal or external.
I worked on computer mainframes back in the 70's- 90's, and can't even recall how many times I've found problems with
my screwdriver. Most of them had an incredibly complicated wired backplane, I mean thousands of individual wires.
We used to fan the pins with a credit card, and a lot of times that would cause the flakey connection to go solid, making it
a lot easier to find and repair.
WIth the old style CRT monitors, I would box the ears on it, as long as the customer wasn't looking..
I mean slapping both sides of it pretty damn hard. That almost always made the flakey connection go solid,
sometimes it even fixed the problem!
HAHA!
Especially electrical demons, they almost always results of some sort of bad connection, whether it be internal or external.
I worked on computer mainframes back in the 70's- 90's, and can't even recall how many times I've found problems with
my screwdriver. Most of them had an incredibly complicated wired backplane, I mean thousands of individual wires.
We used to fan the pins with a credit card, and a lot of times that would cause the flakey connection to go solid, making it
a lot easier to find and repair.
WIth the old style CRT monitors, I would box the ears on it, as long as the customer wasn't looking..
I mean slapping both sides of it pretty damn hard. That almost always made the flakey connection go solid,
sometimes it even fixed the problem!
HAHA!
Last edited by Ragtop; Jun 4, 2018 at 07:59 PM.
Yes I can believe that as I'm having the same type issue. Occasionally (hotter weather makes it more frequent) I'll start it up and volt gauge stays at battery voltage. A quick rap on the VR with a small crescent wrench and up comes the voltage to the normal reading of 14v. So I can confirm what you're seeing!
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Tourer
Joined: Sep 2016
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From: FL East Coast /Western NC
well now... after having researched this till i cant see too good , talking to 3 local bike techs and one long time harley rider bud... along with the fact that these 2012 flhtk's did have quite a few bad regulators ( even tho mine is outside the datecode ) and knowing that when i tapped this thing the voltage quickly jumped back to normal... i ordered a new VR today... gotta start somewhere... puzzlin tho why my batt light did not come on again when volts were only at 10 for almost a minute before i hit this thing and brought it back to life... now... what size are these torx holding the oil cooler please ? my 40 is too small .. will a hex head on a ratchet work ? gotta love this forum
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From: Vermont
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Tourer
Joined: Sep 2016
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From: FL East Coast /Western NC
does anyone know why the service manual would say to remove main fuse before changing out regulator ? i cant see why either that or the neg batt cable would even be needed... am i missing somehting ? thanks
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