This afternoon we're gonna show you how to replace the head seal kit in the INF-1 and INF-2
This is the kit, you order it through your distributor or your dealer - 1586K
it includes a Schrader grommet, a Presta grommet,
an adapter O-ring and the two O-rings that go on the shuttle valve.
Starting off with the INF-2 head, we have the Schrader and the Presta
We'll take the 10mm hex and remove the disc that holds the Schrader side in
The shuttle valve should bounce up and down nice and free
If it doesn't it's from being used with puncture resistant fluid, or possibly not having a water separator
or filter on your air compressor. You need to take that out and clean it so it runs nice and smooth.
We're going to take the Presta side out, takes a 6mm hex.
That disc comes off. That's the Presta grommet, very easy to replace - it's external.
I take a 4mm and I go in, I push in through the Presta hole and I push out the shuttle valve.
It comes out - the shuttle valve with a skewer spring.
Like I said, the two O-rings on the shuttle valve themselves very rarely wear
because they've moved very little,
but if you're gonna take it apart we suggest greasing it.
We use a silicone-based grease we get from a local auto parts store.
Silicone-based lube is what you need to use with rubber so they don't shrink or deform
The Schrader grommet is inside the shuttle valve. Use an O-ring pick to pick that out.
and then place the new one inside. It's a definitely specific shape
When you take it out, you want to make sure that you get the new one replaced in the same way.
I like to keep them lubed up so they snap in there nice
It's very small and fits down inside, goes in very easily
You want to make sure that it's down inside snug.
When you reassemble it, the skewer spring drops in large end first
make sure that's upright.
The shuttle valve goes in with the stem down - make sure you have plenty of grease on it
When you drop it in, it should bounce up and down nice and freely like that
and we take the Schrader cap and the 10 millimeter
and just snug that back up.
On the Presta side, we drop the Presta seal in, and take our Presta disc or our Presta cap,
thread back in, it's replaced.
On the old style INF-1 heads, exactly the same except the caps are external.
Remove your Schrader cap. The valve should bounce up and down free.
Remove the Presta cap - the Presta grommet is external - again, easy to switch.
I just use a 4mm hex to push the guts out
skewer spring, same identical shuttle valve inside
make sure you have your O-rings greased up nice with a silicone-based grease
you take the seal out for the Schrader exactly the same - with an O-ring pick
When I put it back together I drop the skewer spring in to make sure that the spring is large end in first
shuttle valve goes in stem first
make sure it bounces nice and free
Schrader cap goes on
Presta seal goes in
Presta cap is replaced. Very easy.
the extra O-ring on here for the adapter goes between the head and the INF
You remove the head, pull it off; the O-ring's right on the adapter
Take the O-ring pick, take that off
replace the new one, make sure you put plenty of silicone grease on it
and install it and tighten it back up
and you're good to go.