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Breva 1100- What is this hose attached to the transmission ?

JimmyZ1234

JimmyZ1234

Tuned and Synch'ed
GT Contributor
Joined
Jul 13, 2012
Messages
36
Location
Boulder Colorado
I'm doing a spring tuneup on my 2007 Breva 1100 and have a rubber hose (maybe 1/2" OD) that is attached to the top rear of the transmission. The other end goes nowhere. I'm guessing it's a vent hose and that's the way it's supposed to be, but maybe not. I scoured the B11 workshop manual for an image but found nothing.

Can anyone tell me the purpose and routing of this hose?

-Jimmy Z
 
Yup, plain old vent hose. Needs to go high above the airbox to prevent accidental spraying of gear oil. Mine is tucked into my airbox but leaves no trace...
 
By "tucked into my air box", do you mean it is connected to a fitting so air is positively drawn from the gearbox, or is the end loose, not connected to anything?
 
Loose not connected to anything - it just needs to be a height above the gearbox, I guess the height of the airbox is sufficient
 
I noticed this hose, too. I'm a little anal (I've had girlfriends say this, too...but it's usually not the "good" kind) about having an open hose up under the tank; I was thinking, is it a good idea to install a one way breather valve (like on a dirt bike fuel cap) on the end?

It would make ME feel better...
 
sdhow said:
I noticed this hose, too. I'm a little anal (I've had girlfriends say this, too...but it's usually not the "good" kind) about having an open hose up under the tank; I was thinking, is it a good idea to install a one way breather valve (like on a dirt bike fuel cap) on the end?

It would make ME feel better...
Click to expand...


Avoid the one way check valves, they can fail and cause problems. At most, add a small filter to the end of the hose if you must do something.
 
Don't bother trying to fix a problem which isn't there. The end of the breather is tucked away at the top of the airbox, no water can get in there, which is the only thing which would worry me. The tube is too long for any other foreign matter to get down it and cause any problem.
 
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