Wednesday, July 27, 2011

Crosman V-350 BB Gun Disassembly, Part 1

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I picked up this rusty Crosman V-350 BB gun a while back. It functions but is in rough shape.

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The barrel is extremely rusty.

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Two screws fore and aft remove the stock from the action.

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Hmmm, a ball bearing. Crosman doesn’t have an exploded diagram or manual on their site but there are instructions here in the Crosman Service manual. (Very handy PDF!)

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Another shot of the ball bearing and spring.
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A band clamp is used as the front stock mount.
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Knurled nut retains the barrel. It is called the "Tube Bearing" as the barrel slides into it.

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A post (locating stud) for the rear stock screw also retains the spring. This is a spring piston gun, although a somewhat unusual one.

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Another shot.

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I think the rear sight is misaligned.Again you can see the rust.

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Put it in the spring compressor.
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Knocked the pin out.

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Spring and cap. (Tube Plug and Stop Assembly).

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The piston assembly, spring and cap.

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Teflon seal.

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It appears to be one part, unlike the drawing in the service manual.

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Unscrewed the barrel retaining nut/bearing.

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Unscrewing the hollow screw that guides the barrel.

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The hollow guide screw.

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A small ball bearing and spring are revealed in another hole when the barrel is rotated 90 degrees.

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A spacer sleeve around the barrel.

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The seal for the barrel. "Barrel cap".

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Barrel sleeve/bearing and spacer and barrel.

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The seal assembly has a pop valve.I’m nut sure why it’s so complex and to be frank I don’t think I will understand the entire mechanism until I have cleaned it all up and reassembled it.

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The barrel cap is a somewhat complex part.

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Inside. More to come…

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