on to removing the lower guide rails.
there are two lower guide rails: the top lower guide rail and the bottom lower guide rail.
the bottom lower guide rail:
first, we'll remove the bottom lower guide rail. you've already removed one of its pins while removing the injection timing device, so you just need to remove the second pin and pull the guide out through the hole where the injection timing device sat.
same procedure. clean up the threads of the pin (6mm).
using your trusty 6mm puller, pull the pin.
remove the guide rail.
the top lower guide rail:
next, removing the top lower guide rail. similarly, it is held in by two pins. the top pin is a bolt-in pin. remove it using a 24mm socket.
cleaning up the threads of the lower pin for the top lower guide rail was difficult, because my tap handle wouldn't fit in the recess of the timing wheel. I had to use a crescent wrench.
pulling this bolt requires a bit more ingenuity. the longest bolt you can get with threads along its entire length is 50mm, which is too short to get past the outer surface of the timing wheel.
I got lucky and found some 6mm all-thread at my local ACE hardware store.
make a puller by cutting off 6 inches of all-thread. use an appropriate washer stack against the face of the timing wheel.
the timing wheel will make a loud, ringing "BING!" when the pin breaks free.
pull out the top lower guide rail.
pin wear:
it was interesting to note that the plastic guide rails had created polished spots on the pins where they rubbed.
