Door striker bolt?

[lerry1957]

I have a 78 Silverado here I want to change door striker bolt but am afraid to pull bolt because it feels as though the inner workings will just fall down inside cab panel(really loose sounding and feeling). I changed the other side and there was no movement what so ever. I've read here the inner workings will not fall but I also read here where they do fall. Any input on this matter would greatly be appreciated. Thanks...