After searching in the AFMs of the several C172 my flight school operates, all of them describe the system very basically with no diagrams, as exemplified in the following picture:
Is there one master cylinder per pedal - making the total 4 master cylinders?
Or are the pilot and copilot pedals mechanically linked and each side connected to a shared pressure cylinder (making the total 2, one for each main wheel)?
Note I am not asking about the particulars of a specific model, but about the more general configuration one could expect to find in most C172s.