Freeing up a seized hinge.

[Onoff]

I love it when a plan comes together!

 

[ajlelectronics]

I love it when a plan comes together!

Or comes apart.

 

[Gareth J]

I drilled a set of grease nipple points in a similar pair of hinges. Not because they rusted badly but because the wear of the plastic had caused the door to drop. (Switched door hinges side to side first to put the worn side on the less used door).

Might be worth considering as you've got it all there