Beeman Chief II Moderator Removal Tool

[GrampaEJ]

After much searching and not finding any info, or tools for sale, I decided to try making my own tool/socket to remove the moderator.
I was able to decipher the distance across the flats of the nuts {5/8"}. Then, I used a Dremel to grind away the area of the socket
that needed to go around the curved outside edge. Not knowing how much torque was required to remove the nuts,
I opted go with a 6-point socket. After removing the nuts, I think a 12-point might be acceptable. That would require
a little less grinding.

Anyway, I used a 6-point 5/8" socket. With the Dremel, I ground away the amber areas in the pic until it was able to lip over the nut(s).
You only need to go about a quarter of an inch deep into the socket. The nuts are not very thick.
Note: If you're going to attempt this yourself, go slowly and test often. If you remove too much of the socket it may slip on the nut,
and mess up the edges of the nut or the socket, and you may have to start over with a new socket.

Also, a standard socket will work. No need to use a deep well socket, but you will need at least a 4" extension to reach inside the
moderator.
Image should be self-explanatory, but if you have any ???, I'd be glad to assist.

Now, to get the correct sizes for the o-rings in this gun.

Shoot safe everyone,
GrampaEJ

 

[Rotslagter]

Hello GrampaEJ , i managed to get both the locknuts off with no effort thanks to your guide , after i remove those 2 locknuts are there any other measures i can take to completely remove the moderator ?

Doesn't feel loose after removing those 2 nuts

 

[Nvreloader]

What are the inside measurements of this socket? or
the dimensions of the nut?

 

[Rotslagter]

What are the inside measurements of this socket? or
the dimensions of the nut?

I managed to get off the normal Moderator by just heating the barrel end slightly and turning the moderator after removing the 2 nuts on the inside , 16mm or 5/8 Socket

 

[Rawroots]

After much searching and not finding any info, or tools for sale, I decided to try making my own tool/socket to remove the moderator.
I was able to decipher the distance across the flats of the nuts {5/8"}. Then, I used a Dremel to grind away the area of the socket
that needed to go around the curved outside edge. Not knowing how much torque was required to remove the nuts,
I opted go with a 6-point socket. After removing the nuts, I think a 12-point might be acceptable. That would require
a little less grinding.

Anyway, I used a 6-point 5/8" socket. With the Dremel, I ground away the amber areas in the pic until it was able to lip over the nut(s).
You only need to go about a quarter of an inch deep into the socket. The nuts are not very thick.
Note: If you're going to attempt this yourself, go slowly and test often. If you remove too much of the socket it may slip on the nut,
and mess up the edges of the nut or the socket, and you may have to start over with a new socket.

Also, a standard socket will work. No need to use a deep well socket, but you will need at least a 4" extension to reach inside the
moderator.
Image should be self-explanatory, but if you have any ???, I'd be glad to assist.

View attachment 307884

Now, to get the correct sizes for the o-rings in this gun.

Shoot safe everyone,
GrampaEJ

Finding info on these beemans have been next to impossible, thanks for sharing, yesterday i ordered some o-rings for bolt probe off ebay, guessing that 4mm x 6mm x 1mm will work , shot in dark, waiting for replacement barrel since September, terrible service at Beeman.