Help me identify this hose's part #

[beemuker]

Getting to know my new K75 . Last night the front brake was surging , especially a low speed. felt like one of the rotors had warped.  It didn't do this when I tested them before purchase. So I thought I'd clean the rotors and pads with some brake cleaner as I read through the posts and some of the posts said this solved the problem. Drove the bike out of the shed and could smell fuel. Got the flashlight out to see if I could see wet, and noticed this hose that comes out of the bottom of the airbox and goes into the engine. guessing it is for crankcase ventilation . Looked at the parts fisches on Max , bob's wouldn't load? , and could not find the part. you may see from the pic it is cracked at the top (and bottom} Is it ok to run it like this until I can get the hose? Would this be responsible for the gas smell? Smelled like it was coming from the injector area. It does not look to easy to replace without getting the airbox out which looks to be a PITA. advise?

[riots100]

crankcase breather hose,  getting cracked and needing replacement is a very common problem.

[beemuker]

crankcase breather hose,  getting cracked and needing replacement is a very common problem.

thanks, that's what I thought it was
https://www.beemerboneyard.com/11151460480.html

[riots100]

that's the one.


There is a thread somewhere (I can't remember if it was on motobrick or not) that describes what an "oil can" does and why Harley D's "leak" oil.  Both relate to crankcase ventilation.

[The Mighty Gryphon]

Regarding the z-hose.  It's considered a maintenance item since they seem to crack at the clamps fairly regularly.  Since it is one of the very rare rubber bits that are reasonably priced by BMW it makes sense to buy two of them so you have one as a spare.

[Laitch]

It does not look to easy to replace without getting the airbox out which looks to be a PITA. advise?

All it takes is patience. The airbox doesn't get moved. A long-shanked nut driver or ratchet wrench with extension and socket to loosen the clamps, needle-nosed pliers if necessary to move them. then pull out the old one and replace in with the new after you've positioned the clamps on it so they'll be convenient to tighten.

Or call Ace to help you. :giggles

[The Mighty Gryphon]

Loosen the clamps with a long skinny screwdriver and swap the hoses.  When I did mine it didn't take but 5 minutes.  It might be necessary to remove the coil cover to get the screwdriver in there.  That will add a couple minutes to the job.

[Laitch]

When I did mine it didn't take but 5 minutes.

It took me 25 minutes. I had to finish my profiterole and cuban coffee between tightening procedures.

[Martin]

 :neener: I 've only ever changed mine once and the OEM is still usable as a spare. There must be something in the air here.
Regards Martin.

[Laitch]

There must be something in the air here.
Regards Martin.

Falling coconuts.
I think there is something in the water in Wollongong. :giggles

[Martin]

Don't live remotely anywhere near Wollongong, too cold no palm trees.
regards Martin.

[Laitch]

Don't live remotely anywhere near Wollongong, too cold no palm trees.

It was just an advisory, Martin, not a warning. :giggles

[The Mighty Gryphon]

Must be an ozone hole in Oz. 

On my bikes, the problems with that hose (and others)seem to be related to over tightened clamps.  It is not necessary to crush the rubber under the clamp.  All it takes is a little pressure to slightly compress the rubber.

[beemuker]

All it takes is patience. The airbox doesn't get moved. A long-shanked nut driver or ratchet wrench with extension and socket to loosen the clamps, needle-nosed pliers if necessary to move them. then pull out the old one and replace in with the new after you've positioned the clamps on it so they'll be convenient to tighten.

Or call Ace to help you. :giggles

thanks, glad I don't have to remove anything but the old hose. I've got 2 ordered.
Sprayed some brake cleaner on the rotors and calipers, seemed to do the trick.
I think I'll wait on Ace until there is a more serious issue.

[Martin]

Beside the Ozone hole. I do treat all my hose to a coating of a mixture of Emu and coconut oil keeps things supple. If I am out of this I use a product from Surf City called Black Max.
Regards Martin.