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Author Topic: small breather tube  (Read 3396 times)

Offline richarddacat

  • ^ Proficient Motobricker
  • Posts: 249
small breather tube
« on: March 06, 2018, 07:56:04 PM »
During a TBS on my K75 I notice my fan never came on as it heated up. So I took the radiator off and sure enough the fan is shot, barely turns, not free and wouldn't run with a battery hooked up.


Anyway, I saw this small breather, I'm guessing but it had a rotten rubber cap over it. Thought this was strange, IF it isn't a vent what is its use?






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loud pipes annoy people, well designed helmets save lives.

Offline Chaos

  • Administrator
  • ^ Quintessential Motobricker
  • Posts: 3157
  • Mars needs women!
Re: small breather tube
« Reply #1 on: March 06, 2018, 08:22:21 PM »
that vent should be capped off, BMW was experimenting with some emissions plumbing that didn't work very well so that cap is the accepted solution.
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  • sw ohio
1987 K75S    VIN 0231
Original owner, Original litter
200,000 miles (plus or minus) and 5 paint jobs
sold 6/23
2023 Ural 2WD sidecar (BMW's bastard step child)

Offline richarddacat

  • ^ Proficient Motobricker
  • Posts: 249
Re: small breather tube
« Reply #2 on: March 06, 2018, 08:26:53 PM »
Thanks.



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loud pipes annoy people, well designed helmets save lives.

Offline Martin

  • ^ Quintessential Motobricker
  • Posts: 4475
Re: small breather tube
« Reply #3 on: March 07, 2018, 01:42:07 AM »
While you are there it would be a good idea to clean the fuel sensor connector with DeoxIT. I also smear heavy silicone grease around the plug to try and keep the road crap and water out.
Regards Martin.
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  • North Lakes Queensland Australia
  • 1992 K75s Hybrid, Lefaux, Vespa V twin.
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