Im presuming you would twist the output shaft against the input shaft and see if there is any play?
Thats what i do for checking slack in the driveline anyway. turn them in opposite directions and feel/listen for slack/play.
Is the alternator a standard 45A one?
Im in for all this and maybe some of what else you have. Im back from work on thursday. Could i come over then for a look at everything?
Will definitely take snorkel and am 99% on the transfer and alt, unless its not as described.
Will PM you my number.
Thanks.
Nice to meet ya chap ,could rattle all day