Hi All,

I'm not finding this in the three manuals I have or on the forum. Maybe the answer is just snug or tight enough so that it doesn't leak but I thought I'd ask before I put back together. I probably have a standard torque chart around for an 8mm.

Is there a proper torque for the outside tire valve stem nut?

Also, MAX mentions the use a washer with the nut, the bike I'm working on I don't believe has ever has this washer, this is recommended is it? I'm sure I have an 8mm washer in my junk. 

I should also ask... I should grease this oring correct? Any suggestions, belray waterproof or whatever I have around?

MAX BMW:
Steel. The o-ring goes on the “inside” of the tire/rim and the nut goes on the “outside” of the tire. The 8mm tire valve should be used with a 8mm washer 07 11 9 931 697, which is sold separately. The 697 washer interchanges with similar washers- 07119904826, 07119931660, 07119904919. The washer, nut, and dust cap are all visible when the wheel is on the bike. We believe the o-ring can leak if you over tighten the nut.

Thanks,
Chris

1985 K100
Rear wheel snowflake

06	36 32 1 452 748

The nut I'm talking about is below.

Just nip it up, then try the spit test (spit on your finger and wipe it around the valve stem to see if it's leaking). That's all I've ever seen my tyre mechanic do in twenty-five years of using the same shop. Yes, there should be a washer on there. It helps spread the o-ring and seal it, whereas with just the nut there is a remote chance that the nut will grab the o-ring and tear it.

A generic Google search says 11 ft-lbs which seems about right to me.

If you know who made the valve stem then you could email their tech support.

I've never used a washer on the nut.

I wouldn't worry about lubing it.