**Caveat - I am not a pro, nor an airgun smith. I am simply an airgunner trying to learn to maintain and take better care of his airguns. If something proves too difficult I think it’s best to defer to professionals.**
Tools used:
I started by degassing my Bantam Sniper HR with the degassing tool that came with my gun coupled with a ratchet and socket. I used a ½” socket, but I believe this is a metric nut on the degassing tool. It want too tight so the degassing tool wasn’t stressed enough to strip.
After inserting the two prongs on the degassing tool into the holes in the fill port, I began turning it counterclockwise. It wasn’t not snugged down tight and was easy to turn. I made gradual turns until I could hear air begin to escape. From there I stopped turning until the sound of the escaping air got softer. From there I turned it a little more until the pressure of escaping air increased and I stopped to allow the pressure to drop as before. I continued this process until the reservoir was empty.
Once the reservoir was empty I unscrewed and removed the fill port with my fingers.
I don’t like how this o-ring looks on the fill port. I think this is supposed to be an o-ring. The rubber looks worn. I should probably replace it. Anyone know what size o-ring this is below the threads? Or is it even an o-ring?
I noticed a little pressure on the regulator gauge so I dry fired the rifle into a new DIY pellet trap I’m putting together. Then I took a pair of ultra fine precision tip tweezer pliers and inserted the tips into the two holes on the regulator surface.
I used the pliers to twist the regulator counterclockwise out of the bottom of the breech block.
Once the regulator was removed I began to inspect the external o-rings before removing them. Next I used the blunt end of a brass cleaning pick to gently remove the o-rings.
The o-rings looked ok, but I noticed a groove scratched into the regulator body beneath one of the o-rings. I’d suspected this might have been the issue for sometime and discussed it with the last airgun smith that worked on it. I opted to send it elsewhere or attempt to repair the issue myself. Below is a picture of the marred regulator body. To my understanding this type of groove can cause high pressure air to leak past the o-ring causing regulator creep.
So I’m wondering if this mark/groove on the regulator body is the sole reason behind a slow leak around an o-ring. Can anyone provide any input? If it is from problematic marring on the body, can it be repaired? What’s the remedy?
edited to add more photos and steps by request.
Tools used:
I started by degassing my Bantam Sniper HR with the degassing tool that came with my gun coupled with a ratchet and socket. I used a ½” socket, but I believe this is a metric nut on the degassing tool. It want too tight so the degassing tool wasn’t stressed enough to strip.
After inserting the two prongs on the degassing tool into the holes in the fill port, I began turning it counterclockwise. It wasn’t not snugged down tight and was easy to turn. I made gradual turns until I could hear air begin to escape. From there I stopped turning until the sound of the escaping air got softer. From there I turned it a little more until the pressure of escaping air increased and I stopped to allow the pressure to drop as before. I continued this process until the reservoir was empty.
Once the reservoir was empty I unscrewed and removed the fill port with my fingers.
I don’t like how this o-ring looks on the fill port. I think this is supposed to be an o-ring. The rubber looks worn. I should probably replace it. Anyone know what size o-ring this is below the threads? Or is it even an o-ring?
I noticed a little pressure on the regulator gauge so I dry fired the rifle into a new DIY pellet trap I’m putting together. Then I took a pair of ultra fine precision tip tweezer pliers and inserted the tips into the two holes on the regulator surface.
I used the pliers to twist the regulator counterclockwise out of the bottom of the breech block.
Once the regulator was removed I began to inspect the external o-rings before removing them. Next I used the blunt end of a brass cleaning pick to gently remove the o-rings.
The o-rings looked ok, but I noticed a groove scratched into the regulator body beneath one of the o-rings. I’d suspected this might have been the issue for sometime and discussed it with the last airgun smith that worked on it. I opted to send it elsewhere or attempt to repair the issue myself. Below is a picture of the marred regulator body. To my understanding this type of groove can cause high pressure air to leak past the o-ring causing regulator creep.
So I’m wondering if this mark/groove on the regulator body is the sole reason behind a slow leak around an o-ring. Can anyone provide any input? If it is from problematic marring on the body, can it be repaired? What’s the remedy?
edited to add more photos and steps by request.
