Aiwa cassette deck, displaced widget, no REW

[N_Cook]

Having maintained this deck over the years, new silicone rubber bands ,
tyres and pinchwheel etc. Annoying having to drop out just because a
white plastic wishbone/quadrant arm linkage thing has dropped out and
laying in the bottom of the casing. Buggered if I can see where it has
dropped out from. I can manually turn the capstan with REW engaged and
by pushing a lever over, by finger, the REW mechanism will engage but I
cannot see where and how this linkage does the job of my finger.
Full SM with exploded views seems to have a different mechanical deck
to this AD F220.
neither
http://www.radiomuseum.org/r/aiwa_stereo_casette_deck_ad_f2.html
or
http://gooroo-blog.blogspot.co.uk/2010/06/1986-deck-aiwa-f220-magnetofon-kasetowy.html
have a pic of the right area . Google images has failed, no type number
on the deck or in the manual that I can find, unless 58-3-25 is the deck
type, rubber stamped with red ink like the 1983 date in black ink.
Any other ideas?

 

[N_Cook]

That widget is nothing to do with REW it is one of the levers active
from the "top" ledge of a cassette, the one for the REC inhibit slot,
dislodged.
So something wrong with the power-take off cam system presumably, not so
straightforward as replacing a linkage.

 

[N_Cook]

Luckily not the internal PTO cam/cogs area but the latch under the keys.
Small squarish plastic nib under the key, a corner edge of it bears
against a 45 degree angle of one of the steel plate slider-bars. Taken
all those years of use to wear back the corner to a bit of a flat.
Decided on a bodge of a thin piece of PTFE along the key , wired into
its guide slot, to reliably cant over the key to allow that latch to
engage.
Incidently anyone know of a perhaps non-ideal, but not expensive and
"solidified before next use" glue for PTFE?

 

The best glue for PTFE is probbly meat. Teflon is pretty much PTFE and if you fry a steak in a teflon pan and it sticks, it REALLY sticks.