fixing an A 50mm f1.4

[Frank Wajer]

Hi all,

yesterday I fixed an A 50mm f1.4 lens with a sticky aperture. Now it works 
fine again. Gee, the A pin took me 2 hours to get back in again. The 
aperture click ball needs to be spring loaded. I lost the ball and spring in 
an earlier attempt to fix the lens. I received a new ball and spring from 
Pentax Netherlands, but the spring was way to long. I didn't see a way to 
get it not jumping away before closing the lens. Also the ball seemed a bit 
to large, it didn't fall into the hole where it should go. So I just put it 
there without the spring, closed the lens and it works. I was worried that 
the ball might go deeper into the hole thereby loosing the aperture click, 
but it doesn't.
Great, now I'll start working on a K 85mm f1.8, that should be a lot easier 
without the A pin.
BTW. I will never ever touch an A, F or FA zoom lens, that must be a 
nightmare.

Frank