(a)  Mylar tape is installed on window No. 2 around the entire periphery of the inboard windowpane. This is a fixed seal and its purpose is to pressure seal the windowpane to the sliding window frame (Fig. 3).
B.  Bumper Strip
(1)  The bumper strip is a wall of soft material bordering the perimeter of the outer windowpane on window No. 2 (Fig. 3). The primary function of the bumper strip is to edge seal the interface surface between the outer glass pane and the vinyl interlayer to prevent moisture penetration.
C.  Sealant
(1)  The sealant is an applied coating, integral with the bumper strip, on the surface of the window pane edge.
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H30761
500  Window No. 2 (Sliding Window) Seal Details 
May 15/80  Figure 3  56-12-0 
Page 5 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

3.  Window No. 2 (Pilots' Sliding Window) Emergency Exit Release Mechanism
A.  On Standard Passenger Airplanes the pilots' right sliding window is designed to be operated from outside the airplane as an emergency exit. On Passenger/Cargo Convertible Airplanes both pilots' sliding windows can be operated from outside the airplane as emergency exits. An operator outside the airplane can pull the external release handle, unlock the sliding window and slide the window aft to provide an emergency exit from the control cabin. The sliding window release mechanism consists of an external release handle, two interconnected bell cranks, two camshafts (the upper camshaft consists of an inner and outer camshaft) a lower cam, a lock plate and inside the window handle, a pin assembly which is actuated by an idler cam and upper cam (Fig. 4).
B.  When the external release handle is pulled, it operates a bell crank which is connected by a turnbuckle to the spring-loaded lower camshaft. A pin projecting from the upper end of the lower camshaft engages a lower cam on the upper camshaft. Rotation of the lower camshaft is transmitted to the upper camshaft, which rotates, causing its upper cam to bear on an idler cam and depress a pin assembly in the sliding window handle. This causes the trigger to press against the bolt and disengage the lock plate. Further pull on the release handle will cause the upper cam to push on the idler cam, the latter being depressed to the maximum of its travel will then transmit further motion to the handle which engages the outer camshaft by means of serrations. This will cause the lower cam on the upper camshaft to override its top dead center and the window will be positioned inwards. Having completed necessary inward travel the window may be moved to the rear until the lower aft glide travels past the window open latch plate, which is spring-loaded to lock the window in the open position.
501 
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H26059
511  Control Cabin Sliding Window Release Mechanism 
Feb 20/88  Figure 4  56-12-0 
Page 7 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

WINDOW NO. 2 (PILOTS' SLIDING WINDOW) - TROUBLE SHOOTING
1. Window No. 2 (Pilots' Sliding Window) Trouble Shooting Chart

H31550 H30754
500 
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500 
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WINDOW NO. 2 (PILOTS' SLIDING WINDOW) - REMOVAL/INSTALLATION
1.  Equipment and Materials
A.  Solvent, Kerosene -VV-K-11 or equivalent
B.  Oil - MIL-L-7870
2.  Remove Window No. 2 (Pilots' Sliding Window) (See figure 401.)
A.  Check that power is off in window heating system.
WARNING:  OUTPUT VOLTAGE OF AUTOTRANSFORMER RANGES FROM 250 TO 350 VOLTS. BE CAREFUL WHEN WORKING ON SLIDING WINDOW.
B.  Open window to a position about 2-1/2 inches short of locked open stop. Lift the window assembly at the lower front corner and, by sliding it gently back and forth over an inch or so, locate the cut out in the lower track lip (5, figure 401). When the lower forward glide (3) is opposite the cut out, lifting the lower front corner of the window will bring the glide through the slot.
C.  With lower forward glide outside the track, slide window assembly forward until lower aft glide
(7) lines up with cut out (5). In this position, front edge of clothing guard (4) will be approximately in line with guide pin track (2). Rotate window so that top edge goes aft and clears upper glide (1) from its track.
　
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