Align the holes for the interior half of the handle and insert the handle into the spindle of the exterior half.
How to put together a door handle with spring.
Twist the spring counterclockwise onto the unthreaded end of the door handle.
If you have an older house with knobs that slip latches that are stuck inside the door or other minor problems then you should follow these instructions to remove the lock dis assemble it clean and perform minor repairs.
Step 3 put new latch mechanism in.
Maybe the spring has gone.
Screw the door handle together from the interior side of the door.
Depending on the manufacturer the spring may only twist onto the handle about 1 1 2 inches or the entire spring twists.
Repairing the spring in an old door handle.
If the new latch mechanism is longer than the old one drill about 1 2 inch in.
The flat surface of the latch should be on the interior side of the door.
Have you noticed your interior door handle has gone a little loose.
Cleaning and repairing an antique mortise door lock.