Joined: Aug 2010
Posts: 12,760
Likes: 2,118
From: Madison, WI
Bikes: 1961 Ideor, 1966 Perfekt 3 Speed AB Hub, 1994 Bridgestone MB-6, 2006 Airnimal Joey, 2009 Thorn Sherpa, 2013 Thorn Nomad MkII, 2015 VO Pass Hunter, 2017 Lynskey Backroad, 2017 Raleigh Gran Prix, 1980s Bianchi Mixte on a trainer. Others are now gone.
I often ride gravel trails so mine gets pretty dusty, thus cleaning the dust off of the outside of the pump is common. I have a tiny little piece of electrical tape over the hole in the chuck to keep dust out, so for me maintenance would be to replace that tape. A few times I have taken the pump rod out of the cylinder and wiped out any dust I could with a paper towel.