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dummyracer36 · Senior Member

after many months of my Chinese Beeman RS2 .22 sitting broken collecting dust, i finally decided it was time for me to take apart and see whats broken.

the what i'm assuming is a flat head screw (all i have is the head) that holds the seal to the piston broke off flush with the piston, remarkably, the seal appears undamaged.

looks like i'll be spending the evening fighting the rest of those threads tryin to remove them.

my question is this, anyone know where to purchase spare parts? or at the very least an exploded view (i'd like to know for certain that this is indeed threaded in).

side note, the spring looked a bit sacked to me, quite bowed or bent.

any info greatly appreciated

*walks over to lathe*

dummyracer36 · Senior Member

kanyon · Silver Status Member

You would think the piston is pounding into the end of the chamber for that to happen....Can you see any witness marks in there Question

Maybe a leaking piston seal or breach...was it giving the dry fire sound Question

Bore and tap the piston for a 10mm counter sunk cap srew..
& get a JM seal..........
I use this way to convert from leather seal to syn....

TONBON · Veteran Member

i see you got the screw out.
if you find a xploded diagram, i'd like a copy.
here's the trigger.
http://webpages.charter.net/guru1/documents/RSE%20Airguns%20-%20Beeman%20RS2%20trigger%20guide.pdf
if you turn the screw in as it should be and locktight it. you should have no more probs.
i think the only place to get parts is Beeman.
i hav'nt called, but they are supposed to be helpful(so i hear).
you have to call, no internet for parts.
good luck Mr. Green

dummyracer36 · Senior Member

thanks for the link tonbon, interesting read.

as far as parts, i took all the measurements of the piston seal, and if need be, will be ordering one from maccari.
i decided to just cut a new screw on the lathe. will be chucking up the piston assembly as well to polish it a bit. after that, i'll be using a brake cylinder hone inside the compression tube.

i'll be posting some pics as i start assembling this thing.

it was my first .22 AG , so it didnt seem right to just let it languish broken in the corner.

Griff1950 · Member

dr, I have the Chinese RS2 with interchangeable barrels. I haven't had it apart yet, but that's coming. I need to do a lube tune and probably put in a new spring guide. Recoil is violent and "twangy", but the gun is capable of excellent accuracy and hits hard. IMHO, it's well worth working on.

TONBON · Veteran Member

I did a stainless spring guide and lapped washers. trigger(needs more work).
found a slightly thicker breach seal. cut the barrel about 2" w/ new crown.
crowned the breech, new mounting screws(ones w/ decent thread), the originals had crappy threads. wonder how they didn't instantly strip.
finally lube tune. adding tar slowly in about 3-4 steps.
i didn't know how much to use. so i shot it about 50-75 times at least to see if it needed more.
it shoots much smoother. MUCH nicer shot cycle.
a few more internal things before i strip the stock and refinish it.
best at 30yd is 3 shot, 1/2 inch(whith a pulled shot...dam)coulda been 1/4"
consistant hits at 85yd on a hanging beer can.

I LIKE MINE Mr. Green

sniper · Silver Status Member

[quote="TONBON"]I did a stainless spring guide and lapped washers. trigger(needs more work).
found a slightly thicker breach seal. cut the barrel about 2" w/ new crown.
crowned the breech, new mounting screws(ones w/ decent thread), the originals had crappy threads. wonder how they didn't instantly strip.
finally lube tune. adding tar slowly in about 3-4 steps.
i didn't know how much to use. so i shot it about 50-75 times at least to see if it needed more.
it shoots much smoother. MUCH nicer shot cycle.
a few more internal things before i strip the stock and refinish it.
best at 30yd is 3 shot, 1/2 inch(whith a pulled shot...dam)coulda been 1/4"
consistant hits at 85yd on a hanging beer can.

ok ton. my 440 is sick and needs surgery. i wish you lived near me. Crying or Very sad

no reply to my reply, i'm researching how to fix it. should be a juicy thread. sooner or later. Rolling Eyes

(AND IT HAS A MACCARI SPRING DAMNIT!!)