If it is the front pump or TC tabs - then it is transmission out.

I've put in loads of pictures of these bits here

http://www.peachparts.com/shopforum/diesel-discussion/304903-722-118-automatic-transmission-rebuild-monster-diy.html

But it only covers 722.118 transmissions - you might have a 722.3 => very different looking.

Because you are getting some sort of feeling of drive when fiddling about with the selector lever whilst being towed that sounds like the secondary pump (at the back of both transmissions) is working so that's why I'm thinking the front pump is at fault.

__________________
1992 W201 190E 1.8 171,000 km - Daily driver
1981 W123 300D ~ 100,000 miles / 160,000 km - project car stripped to the bone
1965 Land Rover Series 2a Station Wagon CIS recovery therapy!
1961 Volvo PV544 Bare metal rat rod-ish thing

I'm here to chat about cars and to help others - I'm not here "to always be right" like an internet warrior



Don't leave that there - I'll take it to bits!