Drilled a 1/16" hole in the puck, reinserted it, and screwed in the CM3461 on top where the set screw was previously. I removed the IFP port set screw and rubber puck. It showed all of the torque specs and the IFP depth necessary. More searching and I found the exploded diagrams for my RP23.
I went out and bought one at my local auto-parts store for $7.99.įox doesn't publish a manual for servicing the IFP chamber. Since I didn't feel like slumming around the local pick-a-part salvage yards, I started googling Ford fuel rail diagrams and determined the part was a Motorcraft - EFI Auxiliary Valve (CM3461). Over on emptybeer, there was a sharp-eyed fellow who realized a fuel rail pressure relief valve from Ford V8 engines had the same threading as the 4mm IFP set screw. I wanted to spend as little money and time as possible on this experiment. This shock (as well as many others in the Fox lineup) requires a nitrogen needle, a slotted 4mm hex wrench, and a replacement rubber puck to re-inflate the IFP chamber. Much reading of the interwebz suggested the IFP chamber had lost pressure. I figured the worst that would happen is I just put everything back together ("as-is") and then send it off to Push.
Finally, I decided to try and fix it myself.
That certainly would have been the easiest thing to do. I considered sending it off to Push for a rebuild. With no air in the positive chamber, I could compress the shock by hand and feel the propedal switch had no effect on shock. In the Fox RP23 shock I had, the propedal was not at all propedally. If you directly linked to this thread, please visit our Fox Factory Service Information - Main Index for additional resources.