by Raymond » 29 Aug 2007 22:38
From your original question you failed to tell us if it was a deadbolt or a knob. You are therefore getting responses covering both.
If it is a knob, tighten (close) the C-clip before reinstalling. Make sure the spindle is completely seated in the knob. Make sure the cylinder is fully snapped back into the knob face. Test before installing.
If it is a deadbolt, as stated before me, make sure you are using an E-clip and that is is tight and fully in place. The center tab of the E-clip must go into (single or outside on doubles) or on top of (inside on doubles) the tail piece. Check the tailpiece by hand to see if it spins fully or only goes about 180 degrees.
Also check that the bolt itself is not broken and the actuator is what is spinning around.
Nothing is foolproof to a talented fool. Wisdom is not just in determining how to do something, but also includes determining whether it should be done at all.