Hi all
I have just stripped, cleaned, re shimmed and re-assembled the V2 gearbox for my WE scar.
However when i have put it back together and test fired it the tappet plate stays retracted and comes forward when fired only to retract again.
When i put it together the plate is fully extended and can be pushed back and forward on its spring and runs along the tracks correctly ( i checked with a torch).
The only thing i can think of is the sector gear has quite a large molded chip on it not just the usual round peg, more like a crescent. Could this be causing the tappet to be pulled back most of the time as it is so large?
Or have i missed something important when putting it back together?
Also the piston doesn't reset to its original position at the front but stops at different stages of its run ( if you get what i mean). Is this caused my over-spin on the gears?
Many thanks
Alex
Edit: the sector gear's crescent looks like this one: https://www.airsoftworld.net/shs-tokyo-marui-next-generation-recoil-hardened-steel-gear-set.html