Have had recon gearbox and transfer boxes fitted recently (LT230 transfer, and an LT77 gearbox ) and noticed some weeping EP90 from the bolt pictured. It's apparently connecting the gearbox to the transfer box. Whats puzzling me is that the gentle turns I gave it with the spanner met little resistance, and it seems to turn somewhat freely. It's 'captive' in so much as there's some threads holding it in there, but feels odd when trying to tighten so I've avoided going for it with gusto until I figure out whats going on.

Question: given the weeping I'll presume this hole into which the bolt fits goes right through the case? Or is it that the weeping is coming from higher up and just appearing here? Anyone familiar with this part of the transmission?

Image taken from vehicle front looking towards rear.

That bolt hole communicates through to the inside of the transfer box. If you remove it, you'll drain the box of oil. Judging by what you've said, it sounds like someones overtightened it and ripped the thread tapped into the transfer box. It may need re-tapping now - bit of a pain, but could be done on the vehicle...

drain the oil
remove the bottom cover and see the space you have
if enough a nut on a longer bolt.

the leak I had from that area was the seal leaking on the shaft that carries the gear cluster
shaft out to replace the seal
this image:
http://217.34.53.228:9876/uploads/230a.jpg
shows the shaft end next to the yellow plug (with a bit of RTV added )

The weep from it was only slight originally, but when I first tried to tighten it there was a distinct 'snick' as the bolt was turned, which may have been thread sealer, and since then the weep has been a bit more pronounced, which may indicate the stripped thread explanation. Thanks both of you for your diagnoses.

Who fitted the recon boxes?- I would suggest that they would have been responsible for stripping the tread and did not bother to resolve it properly... The best way would be by using a helicoil thread insert to replace the stripped thread.

If recon boxes fitted recently enough to be under warranty, then take the problem back to whoever fitted the boxes and let them fix it.

Doubt there would be enough space between the idler gear and the case to fit a nut. You would have to remove the transfer box to get enough clearance to fit a Helicoil.