Quote Originally Posted by wilkinww1 View Post
Hi Chaps,

I’ve recently purchased one of the above which is not cocking. Having disassembled it the sear seems fine but I have discovered that the piston ring is fairly loosely fitting and, perhaps more seriously, the mainspring had sheered one coil off the end. Do you think this would prevent the pistol from cocking?

I wondered if someone could advise me where I could buy a mainspring and piston ring for this type of pistol. I noted that Proteck supplies have springs for sale but I wasn't sure if these would be correct for this pistol. Therein, will the mainsprings for the other pre-war Webleys (i.e. Mk 1 and/or Mk II target model) fit the straight gripped senior.

I’m hoping the replacement of these bits may fix the issue – However, have other owners of this type of pistol had similar cocking issues (and if so how did you fix it!).

Thanks
Olly
Ok-here we go (again)---------Protek, nibbs or Chambers should have the piston ring and a mainspring. I think most of the mainsprings now are a generic thing rather than being different like the originals were for different models.
Right--lets sort the cocking problem out.Have a look for elongated holes on the linkages and look at whether the "cocking bump" on the pistol is worn or not. Take the barrel and guide off the pistol and remove the mainspring. Then move the piston back with a screwdriver or something to see whether the sear engages with the piston. If it does, use a wooden dowel or similar and put it into the piston and push quite hard and see if the piston/sear holds. If it doesn't then the sear or the ring (not the phosphor bronze piston ring) on the piston it engages on is worn.
If the gun passes that test, then assemble the gun without the mainspring and see if the gun cocks. If it does then try it again with the mainspring back in. If the gun feels like it will almost cock, but doesn't quite, then the chances are the cocking shoe is worn, (WHICH IS THE FAULT THAT I HAVE COME ACROSS MOST--as I tend to play with olde crappy worn out pistols). You can usually reverse the shoe but they never feel right/smooth and it is time to get a new one, which should be good for 30 + years.
I hope this helps.