hookooekoo
Senior Retro Guru
Nice workaround. Did you cut the box wrench in the middle?Progress time. 11mm box spanner (well, a 10 and 11mm box spanner, chopped in half) obtained and thinned in the walls so that it fits inside the end of the pedal body. Piece of pi$$ with an angle grinder. Same done to an 8mm socket - now passes down within/ inside the box spanner. Socket extension bar bought so that I can operate the 8mm socket with a torque wrench (a nice low Nm-rated one for light duty).
Question is what torque to tighten the outer locknut? There's probably a standard for the thread of the pedal spindle but this update is as much as anything an update to say that it was pretty easy to knock-up a tool to do the same job as the £60 Shimano jobbie! It probably cost £6.
I checked with my tools, and a bit of angle grinder work would allow an 8mm 1/4" drive socket to fit inside the hexagonal end of the box wrench. But there's no way the 8mm socket would ever fit inside the narrower middle section of the box wrench. I could only do this with my box wrench if I cut the box wrench where the hexagonal section ends and the narrow round, middle section begins. If I did that I could grip the outside of the box wrench with a spanner while I tightened the locknut. But maybe your box wrench is different and doesn't have a narrow middle section.