tailieunhanh - B17 Pilot Flight Instructions Part 8

Tham khảo tài liệu 'b17 pilot flight instructions part 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | KEY TO FIGURE 72 1 - ELEVATION HANDCRANK 3 - ELEVATION HANDBRAKE 2 - LUG WRENCH l . ELEVATION HANDCLUTCH a. Remove ammunition box cover and load. Push ammunition down to the guns. b. Remove elevation hand crank from its clip and attach it to shaft. Be sure that the hand brake figure 72 is locked. c. Move elevation hand clutch to in position. It may be necessary to loosen hand brake and rock hand crank back and forth before hand clutch can be moved to in position. d. Move elevation power clutch to OUT position using clutch handle then replace handle in its clip. e. Loosen elevation brake slowly while holding elevation hand crank firmly. f. Turn elevation hand crank in down direction until turret revolves to low limit of elevation -90 degrees . g. While holding elevation hand crank open turret door reach inside and move elevation power clutch to in position. h. Move elevation hand clutch to OUT position remove hand crank and replace it in its clip. . Enter turret. Close door securely. Be sure door handles are pushed all the way up and that the Figure 72 - External Manual Controls 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Ball Turret Top View 71 C2003 Figure 74 - Inside Ball Turret turret door is locked before turning main power and sight switches ON. 3. PREFLIGHT CHECK. a. Turn power switch ON. b. Turn sight switch on. c. Check response of azimuth and elevation mechanisms by manipulating the hand controls. WARNING Be sure that the guns are not driven down into the ground. d. Adjust reticle light on sight to desired brilliance approximately . e. Work range foot pedal and observe ư reticles move in response. f. LHt each gun cover plate and pull ammunition down feeding first shell by hand into magazine of gun then close gun cover plates. 4. OPERATION. a. Load ammunition boxes. See figure 71. Enter turret. b. Turn on power switch. c. Turn on sight switch. d. Charge guns by pulling charging handles twice. e. Turn on fire selector switches. f. By means of .