This may help: http://members.shaw.ca/hargravep/70-210.htm
Powell > >Hi, I've just received a Pentax-F 35-135 smc from Ebay that seems to have >quite a bit of internal dust. > >Is it difficult to dismantle these lenses for cleaning? - and, perhaps more >to the point, is it difficult to get them back together properly?! > >Any other less drastic suggestions for shifting dust on internal elements? - >I've considered using compresed air - is this viable? > >TIA >
