Finally got around to putting schrader valves in my Fox end caps.
I jacked up the rear first so it was at full droop. This would get most of the oil out of the reservoir and into the shock body leaving the piston near the top. I then drilled a 1/8” hole in the end cap releasing the nitrogen pressure in the reservoir. I got a little bit of aluminum but mostly rubber.
I pushed up the end cap, removed the clip and then the end cap. See the pictures of the inside of the reservoir and end cap.
I purchased the high pressure schrader valves from McKenzies, Fox-010-00-007A. They’re 1/8 NPT Schrader valves. I’m sure you can get them at other places. I already had the 1/8-27 NPT tap and 21/64 drill bit.
Next was drilling the hole in the end cap with a couple of smaller bits, then the final bit and tap it.
I put some blue lock tite on the Schrader valve threads and installed it into the end cap finger tight, then another half turn with a socket.
Reinstalled the end cap into the reservoir and moved on to the other 3 shocks.