Venisonman,
I tried to dig up a schematic for your 152 but to no avail...so here goes....from memory
-remove the stock (be careful of the trigger guard they break easy)
-TAKE SOME PICTURES or make some drawings showing the relationship of the parts
-remove the trigger group...should be a couple of screws holding it in place leave it in one piece as much as possible for now
-unscrew the breechplug and remove the striker, springs and hammer
-remove the bolt handle...depending on the age it may need to be rotated 90 degrees or so to remove it from the bolt
-slide the bolt out
- remove the pin from the bolt that retains the firing pin
-remove the firing pin
I don't recall how the extractor is designed on this one...haven't seen one in a while. Removal should be obvious, if not post a pic and I'll tell you how to take it out. It may be the same pin that retains the firing puin and there may be a spring under the extractor.
There's a couple of things that could cause a double tap on this type of gun...most likely it's a combination of lead, wax, oil and spent powder. 22's are dirty bullets.
When you're cleaning make sure you get all the debris from around the breech face and in the extractor/ejector pockets. This build up can inhibit the bolt from traveling to a full forward position and can cause misfires or doubles.
If you get confused post some pics and I'll help you through it.
The hammer is captured by the trigger assembly each time the action cycles so be sure to inspect the mating parts for wear.
Make careful drawings if you disassemble the trigger group. They're not complex but they need to go back together again
I'm around if you get stuck.
Bob
