Replacing a Birfield
I haven’t yet busted a Birfield joint on the trail, but just in
case, I’m making a list of tools and tricks to make replacing it on
the trail as easy as possible.
- Hammer, brass drift, flathead screwdriver, needlenosed vise grips:
Useful for popping out the cone washers. The hammer and screwdriver
are also good for bending the tabs on the washer between the axle
- 10 mm socket: To remove/install Aisin hub cover.
- 12 mm socket: To remove/install Aisin hub.
- 14?? mm socket: For some hub internals.
- 17 mm socket: To remove/install brake caliper.
- 54 mm socket: To remove/install axle nuts. I couldn’t find
this size, but a 2-3⁄32” is close enough. NAPA carries this size.
I filed the paint off of the inside edge of the socket and now it
works fine as a 54 mm.
- Snap ring pliers: For the C-clip on the end of the axle.
File the C-clip: Before hitting the trail, file some grooves in the C-clip, so you can
grip it with the snap ring pliers.