Suzuki Wagon R Manual page 1396

5C-2 PARKING AND REAR BRAKE
On-Vehicle Service
Brake Drum
REMOVAL
1) Hoist vehicle and remove wheel.
2) Release parking brake lever.
3) Remove brake drum.
If brake drum can not be removed easily, increase clearance
between brake shoes and drum as follows.
a) Remove console box and loosen parking brake cable
adjusting nut (1).
b) Pull brake drum (1) off by using 8 mm bolts.
INSTALLATION
1) Put flat head rod or the like between rod (1) and ratchet (2)
and pull ratchet as shown to maximize clearance between
shoe and drum.
2) Install brake drum after making sure that inside of brake
drum and brake shoes are free from dirt and oil.
3) Upon completion of all jobs, depress brake pedal with about
30 kg (66 lbs) load three to five times so as to obtain proper
drum-to-shoe clearance.
Adjust parking brake cable. (For adjustment, see PARKING
BRAKE INSPECTION AND ADJUSTMENT in Section 5.)
4) Install console box if removed.