How To Replace Fuchs Valve Stem?

JuiceMan · 10-08-2001, 04:47 AM

Ok my rear tire keeps going flat (brand new tire) I took the tire off and checked all around it for punctures (using soap and water) and everything looks good.

However if I put some water around the valve stem it bubbles slowly. I guess this explains why the tire only goes flat every few days.

It is leaking right where the stem goes into the wheel.

So my question is:

What's the easiest way to get this fixed? Does it take a special seal or what? Seeing as the wheel has the fancy little chrome valve stem that looks like it is screwed into the wheel or somthing?

What do I need? A new seal, new stem or what?

Thanks!

makaio · 10-08-2001, 04:53 AM

Just take it to a tire shop, they will fix it for under $5.

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Matt Chamblin
78 911 SC

JuiceMan · 10-08-2001, 05:28 AM

Just thought I would ask I figured it might have a special seal or somthing that a local tire place might not stock.

pwd72s · 10-08-2001, 08:49 AM

What year/style fuchs do you have? Some years were designed for tubes. Warren or John Walker could provide more info on this than I...but it could be dangerous to run tubeless tires on these rims without using tubes! Strongly suggest you check it out..

JuiceMan · 10-08-2001, 09:10 AM

Well I bought them used I believe they are from a 1972 911.

JuiceMan · 10-08-2001, 09:15 AM

Go here:

http://www.pelicanparts.com/ultimate/image_uploads/pors-best2.jpg

Thats a picture of the car where you can see
the style of wheels, i know not a very good pic but hope it helps.

pwd72s · 10-08-2001, 09:20 AM

Gosh, I wish Warren or John would wade in here. There are parts numbers stamped inside real fuchs wheels. Get those, then make a post...suggested title: early wheels: tubes or tubeless? But the leaking stems suggest to me that the hole could be larger than a tubeless hole, meaning a wheel designed for a tube. But it's just not the stem hole, it's something to do with the lip design of the wheel as well, whether it was designed to hold a tubeless tire in place or not. Wish I could provide more info, but my memory just doesn't click on years/numbers, which wheel is which...my original spare ('72S) has a tube in it...the 7" wheels I run on the car, bought in the mid '70's, are running tubeless tires. edit: Just looked at your pic..the wheels look like my spare wheel, but hard to tell. Pretty, pretty, car, BTW...had a '69 912 once. Always a soft spot for them, and your is really nice!

[This message has been edited by pwd72s (edited 10-08-2001).]

JuiceMan · 10-08-2001, 12:04 PM

Ok I'll try to get some numbers

Bill Verburg · Bill Verburg's Garage

Thru at least 72 oem wheels were tube type. At least that's what the 15x6 on my '72 were. Still have some old tubes hanging in the barn(they're great for tubing on the river).

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Bill Verburg
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Early_S_Man · 10-08-2001, 03:40 PM

Per the factory service manual, the 6" x 15" Fuchs wheels changed configuration from tube-type to tubeless on 24 March 1971.

There is a part number on the back side of one of the spokes, and a Fox head, and the 'stylized' "P" factory mark ... if it is a genuine Fuchs wheel! The tube-type wheel has pn 901.361.012.06 ... and the tubeless is pn 911.361.020.10.
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Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler

[This message has been edited by Early_S_Man (edited 10-08-2001).]

Bill Verburg · Bill Verburg's Garage

I reiterate, my '72 S, one of the last ones made of that model, had 15x6 tubetype. The factory service manual is wrong.

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Bill Verburg
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Early_S_Man · 10-08-2001, 05:23 PM

Well, there are possible explanations for wheels that were on a 72 'S' when sold not being the same five Fuchs that it left the factory with! I happen to know of a '72 'T' that was bought new, and the steel painted wheels were changed out at the dealership with a set of five Fuchs from an 'S' in stock at the time. A set of replacement whells were ordered for the 'S' ... and who knows how long those Fuchs had been sitting on a shelf at the San Antonio Potrsche-Audi distribution center? They could easily have been tube-type wheels.

Also, I tested a late-year '71 911T Targa in January 1976 in Dallas that had never been titled ... it had dealer plates and had been the manager's wife's car, ordered with full 'S' trim and instrument package and Fuchs on the original window sticker with the car. It did NOT have 'deep' spoke tube-type wheels ... they were the same tubeless Fuchs as on my '73 'S' Targa!

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Warren Hall
1973 911S Targa
1992 Dodge Dakota 5.2 4X4 parts hauler

Bill Verburg · Bill Verburg's Garage

I choose to believe in Occum.

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Bill Verburg
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Oldporsche · 10-08-2001, 06:59 PM

Whoa guys,
You're making this too hard on yourselves. If you want this thing to hold air around the replaceable stem, get the right diameter sized replacement stem. They come in different sizes. This is because the original hole in the steel wheel is different for tubeless or tube type. In fact there are small stem covers made for tubes to shim up their size for larger holes in the wheels.

Good luck,
David Duffield