Do not do this. You will make a supreme mess and require you to clean the Vaseline. You do not want any kind of lubricant inside the lens that it wasn't designed to have. That's how you get gummed up aperture blades; someone thought that a little bit of lubrication would help, then it turns to glue.
If you want to make sure that you don't lose the detent, take the aperture ring off inside a bag like a large ziplock bag. Close it up as much as is practical and slide the ring off. If it's going to go flying, it will be in the bag, not in the pile of your carpet. On Tue, May 1, 2012 at 9:54 PM, John Mullan <[email protected]> wrote: > What about a dot of grease (Vaseline comes to mind, but something more lens > friendly) to hold the ball in place, then becoming a lubricant for it after > assembly is complete. > > -----Original Message----- From: Walt Gilbert > Sent: Tuesday, May 01, 2012 3:38 PM > To: Pentax-Discuss Mail List > Subject: Re: Lens repair question > > > On 5/1/2012 2:23 PM, Darren Addy wrote: >> >> The hardest part is keeping the little ball bearing (that engages the >> detents and provide the tactile feedback) from whizzing away when you >> replace the ring. If somebody has a good trick for that, I'd love to >> know what it is. (I can tell you that it is a good idea to work at the >> reassembly [if not the disassembly, also] within a generously sized >> transparent bag (think gallon sized Zip-Lock?). That way, if the >> bearing skeedaddles you can hopefully find it again within the >> confines of the bag. >> > Thanks, Darren. > > Do you suppose putting a small strip of scotch tape over the ball > bearing before disassembly would hold it in place while transferring the > mount over to the other lens, or am I thinking in a completely different > direction here? > > -- Walt > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. > > -- > PDML Pentax-Discuss Mail List > [email protected] > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and > follow the directions. -- David Parsons Photography http://www.davidparsonsphoto.com Aloha Photographer Photoblog http://alohaphotog.blogspot.com/ -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
