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Old 03-16-2011, 08:07 PM   #1
derm75 OP
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Question Oil leak from gear position sensor?

I've got a new to me 2006 950 Adventure S that appears to be leaking a bit of oil from the gear position sensor. The parts manual for the engine shows an o-ring behind the sensor. Is this something that could be replaced pretty easily during an oil change by pulling the sensor out and putting in a new o-ring? Is the sensor plugged into or attached to anything in the transmission? How does it "sense" gear position? Magnetic? Electronic? Optical?
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Old 03-16-2011, 08:29 PM   #2
cpmodem
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Quote:
Originally Posted by derm75 View Post
I've got a new to me 2006 950 Adventure S that appears to be leaking a bit of oil from the gear position sensor. The parts manual for the engine shows an o-ring behind the sensor. Is this something that could be replaced pretty easily during an oil change by pulling the sensor out and putting in a new o-ring? Is the sensor plugged into or attached to anything in the transmission? How does it "sense" gear position? Magnetic? Electronic? Optical?
You can easily replace the o-ring during an oil change or by leaning the bike over on its right side. It is and electro-mechanical switch with a roller on the end of a spring senses different depth detents for neutral, 2nd, and 3rd gears. It's not plugged into/attached to anything in the trans, but the spring and roller are loose.
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Old 03-16-2011, 08:31 PM   #3
Dogtown
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sensor leak

Mine was leaking too about a year ago. You can pull the sensor and put in a fresh gasket anytime. You dont need to wait for an oil change. It only holds back a tiny bit of oil. the gasket is 50 cents and it takes 5 mins to swap out. Not sure why these things leak but its a common problem. Always nice to find out its that gasket and not a case crack from the side stand being overloaded!
Cheers!
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Old 03-17-2011, 07:06 AM   #4
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Thumb

Thanks guys! Time to order a gasket. I keep triple-checking that it isn't an engine case. I just received my Black Dog sidestand mount so maybe I can do the o-ring while installing it.
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Old 03-17-2011, 09:22 AM   #5
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Originally Posted by derm75 View Post
Thanks guys! Time to order a gasket. I keep triple-checking that it isn't an engine case. I just received my Black Dog sidestand mount so maybe I can do the o-ring while installing it.
Had same thing on my SM. Replace o-ring, good to go. Easy fix.
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Old 03-18-2011, 02:51 AM   #6
TA-Zappa
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Had a leaking switch to, tried to find a o-ring (the dealer didn't have in stock) that would fit and while unmounting the switch realize that the torque of the bolts are just finger tight. Pull the switch out, clean the o-ring and mount it again. While mounting the switch try to press on the switch while mounting the bolts fingertight and then torque them up.

I don't have any leaks after that... :)

If you look at how the bolt holes are threaded I guess you will see the reason, they are only threaded about halfway down... This means that the bolt only have a few threads to grab and the rest is locktite....

Next time I got a leak I will replace them with helicoil and threaded all the way to the bottom.

Cheers,
Zappa
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Old 04-03-2014, 07:38 PM   #7
kzahel
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Found this leak on my '05 950. Going to try and find a gasket and replace without doing oil change...
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Old 04-03-2014, 09:23 PM   #8
sonoran
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No need to drain oil. I replaced my o-ring and it still leaked. A little hi-temp RTV sealed it up nicely.
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Old 04-03-2014, 11:54 PM   #9
gozirra
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I had the leak, and stripped bolt(s).

Center stand, remove sensor, plug the sensor hole with shop towels, Heli-coiled, new o-ring, motoseal, win.

no new leaking.
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Old 04-04-2014, 06:25 AM   #10
Black Hills
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had the same issue on my 990. replaced the O-ring and it was fine.
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Old 04-04-2014, 07:06 AM   #11
gearheadE30
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I replaced the oring and it still leaked. Turns out the epoxy seal and had cracked on the back of the sensor. A little JB Weld and I've been good to go ever since. The epoxy was visibly cracked.
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Old 04-04-2014, 12:44 PM   #12
wsmc99
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Yep same on my SMT.
Order 2 so you have a spare.
Quick fix, no draining of oil needed.
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Old 04-04-2014, 01:51 PM   #13
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It's a dry sump motor.
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Old 04-07-2014, 09:13 AM   #14
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I had a leaking O-ring.
Tried to "just tighten it a bit" and stripped the threads.
Put in two helicoils and a new factory O-ring and it's better than new.

I still love these 950's..
Q~
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