http://www.naxja.org/forum/showthread.php?t=1042527
Unless 01 is different , I used a piece of masking tape over top of the nut with a 13 mm wrench ( if you need more length I interlocked and taped a 14mm wrench to the 13mm wrench ) and fished the nut with the wrench in the access hole of the upper part of Pete's picture . But as the guy in the link did, he fished the bolt up through the same access hole and let the thread dangle .
I've tried to find a better link , but so far this is what I've found .
This is to get a better idea .