Lost reverse?

Thanks Tony, those were very informaitve clips. Sorry if I offended you, I honestly was trying to dummy down my questions to keep it as simple as possible. What broke and does the bloody trans have to come out depending on the possible problems? Given the clips had the trans out and gutted for the servo, and out and assembled for the belt "adjustment" I must conclude I'm screwed, such is life :(

The servo can be fixed in the vehicle, but if the band broke it has to come out and be torn all the way down.