For the heck of it, I decided to get my 111B out for a fire up. All went well, until it was time to pump it up. The pump rod (with O-ring) was stuck. I mean stuck. Not sure why it would do that? I finally got it unstuck, pulling with nearly all my might. Took it out, and there's nothing obvious wrong with it. I wiped out the tube, and ran a bamboo skewer along the walls. I felt nothing. The o-ring itself looked fine. Anywhos, re-oiled everything, and it seemed to work okay. Fire it up, and started pumping. Pushed the rod all the way down, and it got stuck again. Not sure what the dealio is. Anyone else had that problem? I would like to find a pump with leather cup for it. Here's a few shots I took:
wow never heard of that before, the only thing I can think of is the end of the pump rod is getting stuck on the NRV?
I've had issues with using correct lube for the orings on a couple stoves. Really hard to get the pump to function. Duane
@CW I thought about that, but couldn't see any indication of it. @hikerduane I've had a hard time before on my Enders 9061D, but never on my 111B. I used 3 in 1 oil. Here's the o-ring I used: Optimus 111B Pump O-Ring Size I wondered if the cup was sliding on the rod to release the air, but it seems to be working okay.
@hikerduane Absolutely. I found where someone had the same problem, but there's was a leather cup stuck: Optimus 111B pump rod
Evening, Gents, I have never been a fan of using o-rings on a pump rod! In my experience, the o-rings just don't provide the surface contact inside the pump tube, to be reliable. Give me a good leather pump bucket every time, and keep the o-rings OFF of pump rods! Just my 'tuppence. - Doc
@Fettler I think I'll put a new o-ring on there, and see if I can't find some grease. @Doc Mark Not a fan of the o-rings myself. I need to find a new pump for it, that accepts the leathers. Looks like base-camp is out of stock.
@The Warrior , Some time back, our old friend from Down Under, @kerry460 (may he rest in peace!), sent me some retrofit kits for changing the o-ring pump set up, to a leather pump bucket. It worked wonderfully! Here is a link to my post about his kits, and how they fit on the pump rods: Kerry's pump buckets! Sadly, I do not know of anyone else who has taken Kerry's excellent design, and kept it alive and well, and to the benefit of us all. Hopefully, someone has done so. This might be a great project for my dear friend and Brother, @sefaudi . Sefa, have you experimented with creating a retro fit kit to swap out o-rings for your most excellent pump leathers? It would be a wonderful match, that's for sure! @Fettler , as to your question about an obstruction ring in pump tube, I can relate my experience with a reproduction of an 18th century double barrel flintlock shotgun I bought many years ago. The former owner, a very dear and long time friend, always used "spit patches" in that smoothbore, and that tiny amount of moisture caused a nice obstruction ring at the bottom of each barrel! It was caused by rust, but brass can also corrode, in certain circumstances, as I am sure you know. It took me quite a long time to smooth out those rings, and in fact, there is still a very tiny amount of residual ring left in each barrel. Might be what happened to TW's pump tube. Maybe so....? I hope this helps, and also that we all get the chance to upgrade our stoves in need, from o-ring to pump leather, in the near future! Take care, and God Bless! Every Good Wish, Doc
The corrosion theory sounds good, except we see everything looks perfect in the pics. No damage to anything that I can see from here. It almost appears like the o-ring in this application works TOO well, and requires much effort to break the vacuum? Interesting problem.
Just wondering... Can you reverse the seger ( locking ring) . Maybe then it would be more loose with the return movement? I haven't dealt with this before, but it might be worth a try?
I said before, I contemplated vacuum causing it to get stuck, but the end moves back and forth as it should. Unless there's some corrosion I can't see blocking it up. Not sure if the locking ring is removable or not. I'm sure it is. After I got it unstuck, I re-oiled it, and it stuck again near the bottom. But the handle/knob was still sticking out about a half inch. I got it unstuck again, and left it out. The o-ring appears to be smooth all the way around. I would expect it to look rough if it had been stuck to the tube. Plus, there's no rubber stuck to the tube. Strange.
On my "D" I saved the original pump shaft and swapped in an old style with leather pump cup. Thing with the retro fit parts is they are only good for one try, so if you forget to put that collar I'll call it back on the shaft if removed, you have to remove your new parts to get the collar back on before fitting the new cup and associated parts again. Duane
Hey Doc, I have been producing those special pump cup leathers for years. But project was to focus on Enders 9060, 9061 and baby models. Hmmm. I should consider same design for 111 stoves as well. Thanks for this good advice Dear Brother.
