Details of drum brake rear wheel:
1 - brake drum; 2 - brake shoe; 3 - friction lining; 4 - brake shield; 5 - expanding bar; 6 - lower coupling spring; 7 - upper coupling spring; 8 - bracket; 9 - clamping device pads; 10 - wheel cylinder; 11 - air outlet fitting; 12 - details of the wheel cylinder; 13 - parking brake lever.