A1C - I did an article on this some ways back on THR - this is the content, which hopefully may help a bit - I have redone the pics to hopefully make them a bit clearer than before.
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Pics are reduced and compressed, to keep download time short .... .as a result, some losses inevitable - hopefully tho they will serve to illustrate what is needed.
To start (of course - check for clear - which includes removing tube mag rod too)-- just undo two screws ..... the trigger guard rear and the larger one on the forend 2" ahead of trigger guard. Don't bother with trigger guard front screw at all. Remove woodwork from rifle. Make sure action is cocked and hammer back.
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First .... having removed woodwork, here is the action .. with slide still locked back halfways. The trigger itself stays in the trigger guard.
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Now - same thing but viewed from below. Look carefully and you should see a white arrow top left ... this points to the plastic split pin that retains trigger group. Push this pin out, noting that just as it comes free, the trigger group will drop down a bit. Notice general crud - this one does need cleaned.!
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Pin has now been removed and rear of trigger group drops down .. control this to avoid it coming too far too soon.
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Once pin is out and rear dropped as in previous pic' .. the front of trigger group can be pulled rearward slightly ... to disengage its location. Note two small arrows ...... the right hand one points to engagement cross pin .. the left points to step at front of trigger group which goes over this pin.
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Now for the bolt. Move it slightly downward as shown ..... which gives some free space above the cocking handle. Move the handle up into that space and it should withdraw by pulling towards you.
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This shows handle removed .... and you'll notice how it is a sort of ''U'' shape, which fits over the bolt. It is normally retained of course when bolt is fully up in normal operating position.
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Just a further view to again show the bolt handle profile side-on.
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Now we can remove the bolt complete with recoil spring. In this pic it is almost out but still pressing against end of mag feed block. Try and keep spring and its guide reasonably straight to avoid spring buckling excessively in its middle.
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With care, continue to pull bolt free and allow spring to expand under control while keeping straight Then remove the assembly.
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From this point you can get down to cleaning. I don't suggest you strip any further. Using carb cleaner etc and compressed air . get all the crud out of the trigger group and the internal surfaces that bear on the bolt. The bolt itself will need some good cleaning also.
After crud is dealt with, relube
sparingly (Militech or similar).... concentrating on slide contact areas. Too much lube is nothing more than a magnet for .22 powder granules!! Reassembly is essentially just a reverse process but again ... try not to buckle the recoil spring as you refit the bolt.
Hope this helps.
