I was able to pick up two "parts/repair" Pentax-F SMC 70-210 lenses off of Ebay for $46 shipped.. Awesome deal.
There are slight differences in the build of the two lenses. From the serial numbers they look like they were probably made in different years.
Both of them had really tight zoom.... one was locked completely and I am going to have to get a couple parts to fix it.... going to go camera shop parts/junk lens shopping in a day or two because I really don't want to cannibalize my perfectly good 28-80 for the couple of pieces I need.
One of them is going well and needs no actual parts.. except for the fact that the focusing is stiff... so stiff that it gets stuck in one place and my K10D cannot move it past that place. I MAY have gotten it loose enough for my K10D to actually be able to not stick when trying to focus, but I really don't want to reassemble it before I have it completely fixed.
What I am having trouble with is the fact that the remainder/main reason for stiff focusing is due to the actual main piece that fits in the body of the lens. The part that has the numbers on it that shows through the little window in the lens body. I'm thinking that one of the felt pieces is messed up/kinked. Does anybody know how to get that part seperated from the body?
Also... is there anything that is supposed to be oiled/greased in the zoom assembly? And if so, is sewing machine oil what I should use?