Gpz1100 forks - size of nut I need for holding tool

[mike_p]

I need to replace the fork seals on my zx1100a1 and plan to make a tool for holding the inner while I remove the bottom fork bolt. I tried to remove it before loosening the top fork nut which usually works.......unfortunately the spring force just wasn't enough to hold it.......anyone know what size nut I need to weld onto a steel bar to hold on the inside ??
Ta in advance folks

[Robw]

Not sure if there the same but for z1000j, I used a couple of 1/2 "long extensions and the square end fits perfectly into the inner tube
Rob

[Al]

Again, for the J not the A.






AL

[mike_p]

Thanks fellas....I've got if apart and its actually a 20mm nut that fits it like a glove