Not sure if anyone has posted this link before....guess not- as it's taken me ages to locate some information form my early Hydramatic Gearbox.
Have a look around here- I've just downloaded a full Workshop Manual for the princely sum of $5 - about £ 3.50 , and it's totally brilliant!
Loads of manuals for loads of stuff that isn't mainstream and readily available over here- can't rate this highly enough!
The Old Car Manual Project
Have a nose .... !