20 mm T171E2 automatic gun, Assembly 20 mm T171E2 automatic gun, Detail stripping 20 mm T171E2 automatic gun, Disassembly Automotive troubleshooting, part 6, The ignition system at various speeds Automotive troubleshooting, part 5, The fuel system at various speeds Automotive troubleshooting, part 9, Cooling system troubles Automotive troubleshooting, part 2, Cranking system Gun, automatic, 20 mm, M-2