Remove the lock body.
Pella how to remove storm door lock.
This will loosen the tension on the deadbolt allowing it to retract and the door to open.
Use the screwdriver to chisel out any wood in the frame that may prevent the door from latching.
The storm door guy does a step by step walk through on how to disassemble a storm door handle in this case specifically a pella select or ashford model.
Remove the screws and cover plates.
Twist the hinge rail screws a quarter turn each counterclockwise using a flat screwdriver.
Contacted pella storm door service at 866 809 9460.
Reinstall strike plate and test operation.
Steps for replacing the lock and hardware on a storm door.
Move the latch to the left or right as needed.
Remove the screws from the latch.
Once the door is open operate the handle and turn the deadbolt.
The hinge rail runs vertically along the hinge side of the door.
Had to replace this hardware.
The pella contact suggested removing the screw cover strip on the latch side and removing the 5 screws holding the latch side trim.
Use pencil to mark on strike plate location of deadbolt and spring latch.
This is a waste of time because the striker plate is still held firmly by 3 screws you can t get to.
Using an allen key loosen the set screw and remove the interior door handle.
Open door and remove strike plate.
This loosens the tension in the hinges to make the door easier to open.
Loosen the set screw.
Start at the top end and slide your finger down the strip while pressing firmly.
Place the new mortise lock.
Using a rasp or file carefully remove excess material from bottom of each hole in strike plate about 1 8.
If one or both legs are damaged or bent the screw cover strips need to be replaced.
If either does not operate when the door is open the hardware needs to be replaced.
Fit the straight outer leg into the mounting rail first and then snap in the inner leg which may have a hook.