FWIW here's the the slinger that goes behind the PTO cover.
http://www.aulro.com/afvb/technical-...gamybob-2.html
https://www.aulro.com/afvb/images/im...010/05/232.jpg
Basically it is a plate of 2mm steel plate the same dimensions as the pto cover plate,with a piece of 25mm od pipe 40mm long split lengthways and welded to the centre of the 2mm plate this when fitted is inside of the input gear,the idea is the oil splashing about catchs in this piece of guttering and runs onto the inside of gear and lubes the splines,have had mine on a long time since i fitted a new input gear on the old shaft no wear as yet and when removed for inspection nicely lubricated and not the usual dry rust/sludge.

