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Old 10-11-2012, 04:01 PM   #1
mfp4073 OP
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Oil pressure switch leaking, do I need to seal the new one?

I may be crazy, but I think I read SOMEWHERE on this site where there was a discussion about sealing the new ones before installation. Have been getting a pretty bad dripper and today realized its coming out the boot of the pressure sending unit so time to replace. I looked all over and cant find what I thought I saw...anyone?
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1974 BMW R90/6 Bettie #1, 04 Triumph Bonneville
Quote:
Originally Posted by Martin Blank
loner, lonegunman, get it. Thatís the whole point. I like the lifestyle, the image. Look a the way I dress.
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Cavemen must've designed them shortly after inventing the wheel.
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Old 10-11-2012, 04:12 PM   #2
hardwaregrrl
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Try this......
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Old 10-11-2012, 04:20 PM   #3
mfp4073 OP
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thanks!!! Thats what I had read.


Dont see any mention of the oil pressure switch leaking. They are cheap and easy to replace so I wont worry about it.


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1974 BMW R90/6 Bettie #1, 04 Triumph Bonneville
Quote:
Originally Posted by Martin Blank
loner, lonegunman, get it. Thatís the whole point. I like the lifestyle, the image. Look a the way I dress.
Quote:
Originally Posted by bgoodsoil View Post
Cavemen must've designed them shortly after inventing the wheel.
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Old 10-11-2012, 05:32 PM   #4
Bill Harris
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Earlier oil pressure switches had a tapered pipe thread and nned to be snugged. Later ones use a staright thread and used a copper or aluminum washer.
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Old 10-11-2012, 06:45 PM   #5
boxerboy81
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The oil pressure switch seems to leak out thru the connector, not where the bakelite (or whatever it is) meets the metal.
I paid $22 for one a few weeks back.
Easiest way to change them over is to lean the bike to the right, remove left carb with cables attached, remove and replace the switch...reverse order.
Snug, just, seems plenty.

Oil everywhere...


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Old 10-11-2012, 07:15 PM   #6
Biebs
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Eh? Wow

No need to remove carb. - cost $15 I just installed a new one in my 89gs. Only a small amount of oil leaked out bike on center stand. Uses a copper crush washer just tighten enough to crush washer do not over tighten in aluminum block.

Do not have a torque value but you should be able to feel the copper washer crush -
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Old 10-11-2012, 08:28 PM   #7
mfp4073 OP
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$10.80 from huckys.

should be easy to change out.
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1974 BMW R90/6 Bettie #1, 04 Triumph Bonneville
Quote:
Originally Posted by Martin Blank
loner, lonegunman, get it. Thatís the whole point. I like the lifestyle, the image. Look a the way I dress.
Quote:
Originally Posted by bgoodsoil View Post
Cavemen must've designed them shortly after inventing the wheel.
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Old 10-12-2012, 07:29 PM   #8
mark1305
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Chad, if you get a chance on this or some other parts you should ask Hans if you can ride down and pick up the parts, I did it once and got a ton of info just talking with him.
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Old 10-12-2012, 09:04 PM   #9
mfp4073 OP
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Chad, if you get a chance on this or some other parts you should ask Hans if you can ride down and pick up the parts, I did it once and got a ton of info just talking with him.
I actually did that when I got my handlebars because I wanted to lay them out on the bike. He was GREAT at making suggestions and such. BUT the cost of gas even on the bike is still more than shipping and the time to run down and back is rather prohibitive considering that from the time I put payment in the mail, I have my parts 2 days later!

But yeah, he is great to work with and to pick his brain for information!
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1974 BMW R90/6 Bettie #1, 04 Triumph Bonneville
Quote:
Originally Posted by Martin Blank
loner, lonegunman, get it. Thatís the whole point. I like the lifestyle, the image. Look a the way I dress.
Quote:
Originally Posted by bgoodsoil View Post
Cavemen must've designed them shortly after inventing the wheel.
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Old 10-13-2012, 04:50 AM   #10
bikerfish
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It's the neutral switch that can be sealed, it's the harder one to replace. I epoxied mine before putting the tranny back in, will it help? who knows, I've had switches leak within a year, and I have bikes that still have the original one from the 70's.
I think it has to do with planetary alignment and sunspots!
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Old 10-14-2012, 08:44 AM   #11
daveoneshot
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Thank the Universe for Hans Lowe.
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Old 10-14-2012, 08:12 PM   #12
mfp4073 OP
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Thank the Universe for Hans Lowe.

Agreed, he has been so much help on this crazy and wonderful airhead journey.
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1974 BMW R90/6 Bettie #1, 04 Triumph Bonneville
Quote:
Originally Posted by Martin Blank
loner, lonegunman, get it. Thatís the whole point. I like the lifestyle, the image. Look a the way I dress.
Quote:
Originally Posted by bgoodsoil View Post
Cavemen must've designed them shortly after inventing the wheel.
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Old 10-17-2012, 10:15 AM   #13
mfp4073 OP
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Well that was a 2 minute project. Took longer to write out the check!

Just to note, a 15/16ths deep socket fits perfectly and goes right by the frame easy.
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1974 BMW R90/6 Bettie #1, 04 Triumph Bonneville
Quote:
Originally Posted by Martin Blank
loner, lonegunman, get it. Thatís the whole point. I like the lifestyle, the image. Look a the way I dress.
Quote:
Originally Posted by bgoodsoil View Post
Cavemen must've designed them shortly after inventing the wheel.
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