MPA-3 acting funny?

[the mag guy]

Ok so I'm a bit new to the pneumag, but I am completley familiar with how it works.

After completing the MPA-3 conversion into a ram like object, i noticed that the plunger is really tight when i put it back in. The only way it moves back an forth is if I force it. Is it supposed to be like this? I've worked with pneumatics when I had my autococker for a few years and I know that nothing ever "stuck".

I removed the black o-ring on the plunger and placed everything beck inside and it moves around just fine. I know I need the o-ring to make a seal. Should I just buy another mpa-3 and try it again? Also should i leave the spring in it or not?

I have all the parts, I just havent installed them due to my situation. let me know....

[the mag guy]

people c'mon now. I know you can answer this one. I went ahead and ordered another mpa-3, but if anyone could lemme know it would help.

[Pneumagger]

oil?

It has s pring in there, but shouldn't be that tight. Give me your addy is that don't work... i can send a new piston

[BigEvil]

The plunger should move pretty easy, even with the springs and once you have a piston in there. I can pull mine with my finger tips. Maybe you defrormed the plunger when you attached the piston to it?

A little autolube wont hurt it. Come to think about it, I dont think anything really will.

[the mag guy]

i tried it both with the spring in and out, and I tried using my paintball oil. The only thing I can think of is that the o-ring got swollen. I think it will be fine w/o the oring though. It will leak hardcore when I pull the trigger, but it will stil lget the job done. I dunno, i can test all this when i get my tank back form the re-hydro place.

[Pneumagger]

can we get a picture down the bore to see for out of roundness? if you clamped it too hard it would definately bend.

[the mag guy]

can we get a picture down the bore to see for out of roundness? if you clamped it too hard it would definately bend.

I havent clamped it yet, thats the deal. I havent installed it due to the fact that the plunger is sticking. I can try to get a pic up, but it will be after 8 pm tonight.

[the mag guy]

alright I took out the entire ram/plunger assembly to find that I indeed have mildly deformed the plunger. I cannot confirm the swollen o-ring theory yet, I will when I get another.

[Pneumagger]

I'll send that out tomorrow

[afortuna]

I'll send that out tomorrow

That is AO community help for you! That is why I frequent this board.

Well, that and the

[the mag guy]

yeah, the people here are amazing, thanks pneumagger

[the mag guy]

good news! i got my mpa-3 in and we were right, not only was the plunger warped, but the o-ring was swollen and crappy.

bad side is now in the lenght of time I have waited, i seem to have misplaced my lpr!!!!

dang it. well im gonna play one last time with it non pneuframe this weekend.