I had a ground engineers licence on them many years ago!!
I do not have any manuals now but I suggest you contact the Farnborough Air Museum, they may be able to help.
http://www.aeroflight.co.uk/mus/uk/f-k/farnboro.htm
If you want to know anything I may have tucked at the back of my (senile!!) mind please ask.
Tristar 500