Interlock mechanism on 091/1 gearbox (from my VW Type25)

My first youtube video !
When reassembling my T25's gearbox I was worried that I'd not read anything in the repair manual about interlocks, that is the mechanism that stops more than one gear rod being moved at any one time (causing the box to lock up, disasterous if you're out driving the thing!)
I'd read a bit about VW Type2 gearboxes (002 and 091's) but the T25 091/1 ones are different. This video is my explanation to myself (!?!) of how things work.
As I said it's my first youtube video, I think that shows, but if it helps someone then my work is done :-)

[@JamesAkers]

Nice one Dale. This one video has increased my gearbox knowledge by about 1000%.

[@mikeet7590]

Just about to put my box back together now. This is most helpful. Thanks

[@chrismcnelis3678]

Thanks, serious help in understanding my no reverse issue.

[@casperakoma7273]

excellent demonstration.

[@stridaclone]

Thanks for that. I am trying to get up the courage to rebuild my 091/1 box. Can it be so very difficult? I will give it a try now. Steve Coulson

[@T_ndhlovunator]

Does anyone have a pdf version repair manual for this gearbox, even the syncro one would be helpful.

[@matsles6935]

:):):):):):):)

[@anouartanjawi8460]

السلام وعليكم ورحمة الله وبركاته أن خسني البوط فيطس فولزفاكن 1986