There are two places for adjustment. The hole in the rear hub which adjusts the actual brake shoes and the turnbuckle in the cable. The turnbuckle would need to be adjusted to remove any "hanging" slack from the parking brake cable.
If the car has been driven with the parking brake on for only a short distance, adjustment might be in order. If driven for an extended period, you'll probably want to replace the parking brake shoes.
The parking brake pedal should begin to tighten up after about three clicks.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.