I been very successful taking a part my 146s and 149s using some watch tools or U shape screw drivers.
Tools left to right 1.2mm slotted watch screwdriver, 1.6 mm slotted watch screwdriver, watch pin remover and U shape screw driver
Just place the tool of choice on angle into one of the notches and gently try to twist. It does help to place the pen in to a warm water bath before trying taking it apart. Seal the pen in a zip lock and place the back half of the pen in the water for a few minutes. To help prevent scratches I like to tape up the pen in areas where the tool might slip.
Be gentle when trying twist, especially on the resin parts they will crack. Once the section or piston dislodges, continue to remove the part by hand.
I like to use super lube synthetic grease for the piston. To seal up the section I use kitchen and bath silicone clear. For the section apply a thin layer of silicone at the bottom part of the section’s treading and continue all the way down to the lip of the section. For the piston apply a thin layer of silicone over the piston’s tread. Before attaching the section or the piston back to body make sure to use a q tip to clean grease out of the treads of the body or you will have leaks. Remember when closing up gently tighten, the silicone does a good job sealing up. Scrape the excess silicone with a business card and wipe any remaining residue. Allow two days for the silicone to dry before inking up.
The next time I take apart a 146 or 149 I will post the photos with better instructions.
Edited by mikenycli, 06 January 2014 - 05:17.