I am not sure of the difference between maintenance and repair. I guess maintenance is proactive repair
Yesterday I put Sidi-alike )?) replaceable heel pads on my repaired Shimano shoes using a shortened (with a grinder)
claw nuts and cleat bolts to hold bits of rubber on. I have since bought better bits of rubber (dollar store shoe heels).
Sidi Type (?) Replaceable Heels by
Timothy Takemoto, on Flickr