Wednesday, March 1, 2017

Crosman Model 357 (Phase 1) Disassembly, Part 2

On I go…
The cylinder plate pops off.
Nothing special about the valve tube.
My valve tool may need some refurbishing…IMG_6259IMG_6262
Crosman uses quad seals here. These seem pliable and will be reused.IMG_6264
The #38-128 end seal is deformed and clearly not up to the task anymore. Luckily I had a few spares on hand.
The guts.
The #38-130 o-ring has given up the ghost. I replaced it with a 009 viton o-ring. Urethane would be better.
Not wanting to place an order for parts or spend more time making a seal than the gun is worth, I flipped the #357-041 valve seal over. It was still pliable. It had a scratch in the face that could have made the gun leak.
The gun went back together without a hitch, I suppose it’s possible that the latch support could shift, but it seems to lock up fine without play. It’s held gas for 5 days and shoots as accurately as one would hope. I didn’t chrony it because of general laziness.

Crosman Model 357 (Phase 1) Disassembly, Part 1

A friend conned me into resealing a Crosman 357 revolver for him. I realized that we don’t have a full disassembly blog, so I’ll give it that treatment. The last one I disassembled using my patented explosive technique of forgetting that there was a full CO2 cartridge in the gun…
You can get the exploded diagram, etc. here.IMG_6208IMG_6209IMG_6210
1987 vintage.
Let’s begin.
Three screws.
The barrel pivot screw is longer.
The safety is best kept in the side plate so it doesn’t get forgotten.IMG_6219
This is a handy picture as it shows the ideal state of things.IMG_6221IMG_6225
I’m not sure what all the odd hard rubber bits are as the main rubber spring for the latch seems fine.IMG_6226IMG_6227
Removing the lever.
And the index finger.
And the entire valve and piercing body assemblies.IMG_6231
The hammer spring also retains the Piercing body assembly.IMG_6232IMG_6234
Removed the hammer. Notice the solidified grease.IMG_6235
The safety link is behind the trigger.
Trigger spring.
Just a couple of details. Part 2 to follow…