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Moisture Inside Speedometer

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Old Jul 6, 2014 | 09:09 AM
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Default Moisture Inside Speedometer

I just recently replaced the cam chain tensioners on my 05' Road King Classic. While i had everything disassembled, i took a look at a few things that have been on the maintenance list for a while. One of these things is the speedometer. I have always seen streaks, kind of drips going across the inside of the glass. I took a better look at the speedometer itself yesterday and it's simple to take out of the consol, but then appears to be a sealed unit otherwsie. Has anyone delt with this issue before? Is it possible to get the acutal speedometer apart without messing anything up? I didn't want to go prying stuff apartment without consulting the experts!
 
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Old Jul 6, 2014 | 09:39 AM
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the moisture has been talked about alot over the years and most bikes do it to some extent and the only solution I've ever read which would be pita is add to add a vacuum line to suck the moisture out
 
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Old Jul 6, 2014 | 10:10 AM
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Living in Florida I have dealt with alot of this on all my sleds...I keep them in the garage and when I take off on really humid days I c it on all of my gauges....Either its a design flaw or just plain crappy HD quailty control...
I for sure am not an expert on this but maybe there is no way to rid of it in high humity areas... I just leave it be....And enjoy the ride...
 
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Old Jul 6, 2014 | 10:37 AM
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I see it on my Dyna as well but after the engine warms up enough it starts to disappear. It usually happens more after I wash the bike. Undoubtedly it isn't a sealed unit.
 
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Old Jul 6, 2014 | 01:09 PM
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Just live with it.
 
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Old Jul 6, 2014 | 03:59 PM
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Ok well that sums it up. I am certainly not going to let it ruin my ride. As long as i can see it, and the odometer still works, it's all good. As it was said "probably just another one of HD's quality control issues". Thanks!
 
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Old Jul 6, 2014 | 05:06 PM
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I've heard of it happening in just about every gauge, mine is in the fuel gauge.
 
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Old Jul 6, 2014 | 05:26 PM
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Originally Posted by SummitRK
Has anyone delt with this issue before? Is it possible to get the acutal speedometer apart without messing anything up? I didn't want to go prying stuff apartment without consulting the experts!
Yes........I took my speedometer apart on my Fatboy (couple times) but not for this reason. I took it apart to change the color of the LED's form red to blue. Having said that.....yes you can take it apart but cleaning it is not going to solve your problem. You can't waterproof it either. In order to keep water out you have to have water tight connections at every joint in the assembly. Then you have to purge and pressurize the housing with an inert gas like nitrogen.
The electronics will survive because the printed wiring boards are conformal coated with a water resistant silicon based material. They should be able to handle the amount of condensation that builds up from time to time.
I have seen it on my SG on cool mornings going to work........within a couple minutes it is dry.
BTW.........this isn't a quality control issue, all electronics are designed like this. If you wanted waterproof gauges on you motorcycle it would most likely add $XXXX to the price of the bike......and if you purchase a $50,000 car, the gauges are made the same way.
 

Last edited by STLFLSTF_Mike; Jul 6, 2014 at 05:30 PM.
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Old Jul 6, 2014 | 05:34 PM
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"and if you purchase a $50,000 car, the gauges are made the same way" ... and they aren't exposed to the "elements" ... All mine have done it at one time or another ... My 1992 FLHTCU is the worst.
 
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Old Jul 6, 2014 | 09:39 PM
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Originally Posted by Uncle Larry
"and if you purchase a $50,000 car, the gauges are made the same way" ... and they aren't exposed to the "elements" ... All mine have done it at one time or another ... My 1992 FLHTCU is the worst.
LOL......not many people hose down the inside of their car
 
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