[Vwdiesel] ETKA help (!)

[rbp at 4u2bu.org]

reassembling my engine here and can't find one bolt
(only one lost in the grass so far; that's not so bad, I guess, over almost a
month now)
Bentley doesn't tell me what it is; neither does Steve @ Europarts' microfiche
if anyone has ETKA, I am trying to figure out what exactly is supposed to go in
the idler roller for the crank-cam timing belt
(I don't remember removing this bolt, actually; it may be that the bolt was
missing when I disassembled; PO has left a whole bunch of things off in other
places, so this wouldn't be inconceivable)
in Bentley this is on page B 13-8 part #6
(the threads in the idler roller are M8 - Steve doesn't show any bolts larger
than M6 in this area; is it possible these threads are only for the removal of
the roller ??)
anyone?
thanks!
Rolf