Thanks for your advice. I´ve already read a lot of manuals.... My Problem is that I don´t understand the function. Have read how to replace it (What I have already done) and checked the part catalog. BUT... when I bought my Truck, my interlock air cylinder was broken. (see picture) Like I said, I replaced it. Now I tried to shift from high gear to neutral. (Pressing the button on the lever and pull up). It works. But when I tried to shift back to high gear I don´t bring in the gear. Why is that? Could it be the interlock cylinder??? Have already released all the air from all systems.... but no chance to shift back to high gear.
Then I removed the cylinder and the pin. Tried again to shift back to high gear. But no chance. Not with air, not without.
Any Ideas??? Would be very helpfull! Thanks again!!!!!!!
Maybe the problem is the reason why the old cylinder has benn broken...................