B-17 Pilots Manual.pdf

II~. Remove ammunition box cover and load. Pushammunition down to the guns.Q.. Remove elevation hand crank from its clip andattach it to shaft. Be sure that the hand brake (figure72) is locked.~. Move elevation hand clutch to "IN" position. Itmay be necessary to loosen hand brake and rock handcrank back and forth before hand clutch can be movedto "IN" position.Q. Move elevation power clutch to "OUT" positionusing clutch handle; then, replace handle in its clip.~. Loosen elevation brake slowly while holdingelevation hand crank firmly.!, Turn elevation hand crank .in down direction untilturret revol ves to low limit of elevation (-90 degrees).g. While holding elevation hand crank, open turretdoor, reach inside, and move elevation power clutchto "IN" position.KEY TO FIGURE72I - ELEVATIONHANDCRANK3 - ELEVATIONHANDBRAKE2 - LUGWRENCH q - ELEVATIONHANDCLUTCHg. Move elevation hand clutch to "OUT" position,remove hand crank, and replace it in its clip.i. Enter turret. Close door securely. Be suredoor handles are pushed all the way up and that theFigure 72 - External Manual ControlsKEY TO FIGURE 73~I. ELECTRICAL SWITCHBOX2. SPOTLIGHTSWITCH3. GUNNER'SEATq. RANGE FOOT PEDAL5. HEADSETANDMICROPHONELEADS6. TURRETFRONTWINDOW7. FOOTREST8. CHARGINGHANDLf9. TURRETHANDCONTROLANDLIMIT UNITfO.ELEVATORPOWERCLUTCHFigure 73Ball Turret, Top View71