Hold the door in place using blocks under the bottom to support it if necessary.
How to install door hinge pins.
Once the pins are out knock the brass cups out of the hinge and clean inside the bore.
The pins have a serration under the head and this holds the pin tightly in the hinge.
Continue to tap it up gradually increasing the force until the pin is finally lodged upwards.
Slide the pin back into the hinge.
Insert the hinge pin into the hole in the stopper assembly from above so that the shank of the pin extends below the assembly.
Force the pin up from the door hinge.
Connect the door to the jamb.
Then install the lower pin into the top bushing moving and adjusting the door as you go to allow the pins to slide in somewhat freely.
Taking a hammer and your nail punch gently ram the pin upwards.
Insert the new brass cups into the hinge and then apply plenty of grease inside.
Line up the two hinge plates so that the ones on the door match the ones in the jamb.
This leaves the stopper assembly.
Slide the hinge pins into place and remove the blocks from the door.
Knock the pin back into the hole using a solid base to rest on if the pin is slightly longer allow for the difference to let the bolt seat fully home.
To seat the serration into the hinge just get out your socket again and place it over the point of the pin.
Top hinge set of pics.
The fit is tight and it will likely require some force to complete the installation.