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russelltatedotcom
Samba Member
Joined: May 16, 2020
Posts: 203
Location: Sydney
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 Posted: Sun Jul 13, 2025 6:43 pm Post subject: Problem with Helphos spare tire hose (Luftentnahmeschlauch) |
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Hi Guys,
I am having trouble getting my spare tire to put pressurised air into the windscreen washer bottle
Between the spare tire and the bottle I am using one of these:
Helphos spare tire hose (Luftentnahmeschlauch)
The problem seems to be that no matter how tight I screw on the hose to the spare tire (inflated to 26psi) no air is released?
It's as if the valve needle in the tire...
Is not being depressed by the hose attachment?
Does anybody else have any experience with these devices or can offer any advice as to what I might be doing wrong.
I thought it was going to be a 'screw on and good to go' affair but that's not the case
Thanks in advance for any help
Russell
PS. The reason for the Luftentnahmeschlauch is that it cuts off the air supply to the bottle once the tyre reaches 17psi saving you from a flat tire down the track |
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Bruce
Samba Member
Joined: May 16, 2003
Posts: 17572
Location: Left coast, Canada
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| Posted: Sun Jul 13, 2025 7:30 pm Post subject: Re: Problem with Helphos spare tire hose (Luftentnahmeschlauch) |
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Inflate your spare to 42psi.
The valve is supposed to stop working at low pressure so your spare tire is never flat. It is doing what it's supposed to do.
_________________
| overheard at the portland Swap Meet... wrote: |
| ..... a steering wheel made from a mastadon tusk..... |
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russelltatedotcom
Samba Member
Joined: May 16, 2020
Posts: 203
Location: Sydney
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| Posted: Sun Jul 13, 2025 8:24 pm Post subject: Re: Problem with Helphos spare tire hose (Luftentnahmeschlauch) |
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| Thanks Bruce your suggestion worked, I mistakenly assumed it would work at road pressure |
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russelltatedotcom
Samba Member
Joined: May 16, 2020
Posts: 203
Location: Sydney
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| Posted: Sun Jul 13, 2025 9:34 pm Post subject: Re: Problem with Helphos spare tire hose (Luftentnahmeschlauch) |
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Hmm, now with pressure above 30psi water is squirting out of the washer jet nozzles without the button being depressed
It seems the Luftentnahmeschlauch valve wants more pressure to work properly but the nozzle jets want less?
It's strange because the Washer/wiper switch was bought new a year ago and has not been installed in the car yet
I can only assumer the switch is at fault and cant hold back 30+ psi without leaking.
Anybody else had a problem with the Washer/Wiper switch valve not holding back water? |
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sputnick60
Samba Moderator
Joined: July 22, 2007
Posts: 4110
Location: In Molinya Orbit
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russelltatedotcom
Samba Member
Joined: May 16, 2020
Posts: 203
Location: Sydney
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| Posted: Mon Jul 14, 2025 11:22 pm Post subject: Re: Problem with Helphos spare tire hose (Luftentnahmeschlauch) |
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Did you stick with just a regular hose Nicholas, or make the the jump to electric?
(I'm starting to consider electric myself at the moment!) |
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sputnick60
Samba Moderator
Joined: July 22, 2007
Posts: 4110
Location: In Molinya Orbit
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