1 - Lifting ring 2- Ventilator 3- Turret hatch 4- Periscope 5 - Turret hatch race
6 - Turret seat 7 - Gunner's seat 8 - Turret seat 9 Turret 10 - Air cleaner
11 - Radiator filler cover 12 - Air cleaner manifold 13 - Power unit 14 - Exhaust pipe
15 - Track idler 16 - Single water pump 17 Radiator 18 Generator 19 - Rear propeller shaft 20 - Turret basket 21 - slip ring 22 - Front propeller shaft 23 - Suspension bogie 24 Transmission 25 - Main drive sprocket 26 - Driver's seat
27 - Machine gunner's seat 28 - 75 mm gun 29 - Drivers hatch 30 - M 1919A4 machine gun
See More
http://en.wikipedia.org/wiki/M4_Sherman
