On I go…
The grip frame is held by two screws, just like on every other Crosman pistol of this type.
Grip frame.
The pivot pin for the sear was missing. I’ll find a suitable replacement.
There’s a nice slotted guide for the sear spring.
The safety spring was missing. The detent ball was still at the bottom of the hole.
The trigger pivot pin. Knurled at one end for retention.
The safety. A complex little part.
The trigger.
The rear sight. I removed the two setscrews.
Drifted it out of the dovetail.
The end cap is retained by two small setscrews.
It comes out a little under hammer spring pressure.
Then the spring comes out and the hammer…Can’t remove it yet as the cocking knob is in the way.
A screw retains the knob.
That’s a small spring washer for slight tension on the knob.
The hammer.
The bolt is held in by the cocking pin. It has to be unscrewed through the slot.
The cross hole had a spring in it that shot across the room. Live and learn. Maybe I’ll find it but more likely I’ll have to make a replacement.
Valve nut needs a special tool to remove it.
Valve nut.
I pushed against the inlet valve with a 3/16” brass rod.
The valve components.
Here’s how it looks assembled.
Inlet valve.
Exhaust valve. I’ll make replacement seals for both.
The whole gun apart. Now to reseal, replace parts and get some grips.
9 comments:
Nice tear down
The cross hole in the bolt actually has two ball bearings and a spring. My bearings measured 0.940" in diameter. My spring measured 0.998" in diameter, with and uncompressed length of 0.25". Hope that helps you find replacements.
Where can I get a valve nut removal tool for this pistol?
I made mine.
I just picked one of these up on an online auction for $35.00 and it's pretty mush all there. It pumps up and shoots but will not hold pressure if left for long and when there's no pressure on it, the pump handle drops down about an inch. Is there something missing that's supposed to hold it up?
Hello my name is Bob Rinehart. Could you please tell me where can I find the special tool to remove the value nut? Also I think my crosman is a model 106 not a 105. But there is one difference. Mine is all brass color except the grips and the back part of the charger. I cannot find anything on the internet concerning this pistol. Is it rare? Thanks for any help. Bob
Bob, I made my tool, some time with a dremel and pipe/old socket will yield you a similar tool.
I have a newer 106. As I was taking it apart, a small brass plug appeared. I didn't see
here it came from.
105 is .177 cal 106 is a .22 cal
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