Fully cock, thus engaging the firing pin with the sear; drive out the axis pin of tumbler, pull the trigger slightly, and lift out the tumbler.
Note.—Care should be taken not to allow the screwed head to lift the sear when once the tumbler has been removed.
(iii) Trigger, Lock Spring or Extractor Levers.
Release the lock spring, drive out the lock spring axis pin, remove the keeper bracket, extractor levers and lock spring; if the trigger is defective, drive out the trigger axis pin and remove the trigger.
(iv) Firing Pin.
Proceed as for (iii), but do not remove the trigger. Remove the tumbler axis pin and tumbler, raise the sear, push the screwed head out of its way, and the firing pin will drop out.
(v) Gib, Gib Spring, or Extractor Spring.
This will necessitate the removal of the extractor from the face of the lock casing. Release the lock spring, drive out the lock spring axis pin, remove the keeper bracket and extractor levers; next drive out the keeper pin of the extractor stop, remove the latter, and slide the extractor off the lock casing: push out the gib spring cover, and remove the spring or gib as the case may be. If the extractor spring requires replacing, drive out its fixing pin and remove.
Note.—The serviceable components are replaced in the reverse order.