2.  Repair Window No. 2 (Pilot’s Sliding Window) Bearing (Fig. 802)
A.  Remove window No. 2. See Window No. 2 (Pilot’s Sliding Window) - Removal/Installation.
B.  Remove special bolt from bellcrank.
NOTE: Be prepared to catch parts as screw is removed.

C.  Reinstall special bolt complete with shim washers and new glide track bearing. NOTE: It may be necessary to change the number of shim washers to give proper vertical
window adjustment.
NOTE: Make sure you tighten the lock screw securely.

D.  Reinstall window NO. 2. See Window No. 2 (Pilot’s Sliding Window) - Removal/Installation.

500  Window No. 2 (Pilot's Sliding Window) Bearing Installation 
Oct 20/92  Figure 802  56-12-11 
Page 803 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

PASSENGER CABIN WINDOWS - DESCRIPTION AND OPERATION
1.  General
A.  Passenger cabin windows are located between the fuselage frames in those areas of the cabin where passenger seating is provided. The passenger cabin windows consist of outer, middle and inner panes (Fig. 1). The inner pane is nonstructural and is mounted in the cabin sidewall lining which is described in Passenger Cabin Equipment, Chapter 25. The outer and middle panes are each capable of taking the full cabin pressurization load. Fail-safe structure is ensured by the middle pane which is designed for 1.5 times the normal operating pressure at 70 degrees Fahrenheit. All three panes are acrylic, the structural panes being formed to improve resistance to crazing.
B.  The passenger cabin windows are designed as plug type windows subject only to the pressure acting on them. The method of installing and sealing the windows is provided through the use of a passenger window seal. The passenger window seal is a molded ethylene propylene seal with six alignment tabs, staggered beads, and an integral masking feature. Bonding is not required on installation of the seal. The outer pane of stretched acrylic plastic is rectangular in shape with rounded corners and a beveled outer edge to fit the window frame. The pane is curved to fair with the fuselage contour. The middle pane is similarly shaped but with an unbeveled edge which is seated on the inboard face of the seal spacer. A small breather hole is located near the bottom of the middle pane. Ten window retaining clips secure the window in the window frame.
C.  Passenger cabin windows are designed to preclude fogging and frosting by means of multiple pane construction with intervening cavities essentially isolated from cabin interior air conditions and supply air conditions.
544 
Aug 01/95  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  56-21-0 Page 1 

H26206 H26208
 Passenger Cabins Windows  513 
56-21-0  Figure 1 (Sheet 1)  Feb 20/89 
Page 2 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

513  Passenger Cabin Windows 
Feb 20/89  Figure 1 (Sheet 2)  56-21-0 
Page 3 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

PASSENGER CABIN WINDOWS - SERVICING
1. General
A.  Reapplication of the antistatic agent should not be required for several months provided the treated surfaces remain inaccessible to weather and human contact. Antistatic solution is water soluble, therefore care should be taken not to wet or mar windowpane surface after treatment.
2.  Equipment and Materials
A.  Antistatic agent (Ref 20-30-31)
B.  Boiled cheesecloth (boil and drain three times)
C.  Castile soap
D.  Wax (Ref 20-30-31)
3.  Prepare Passenger Cabin Windows for Servicing
A.  Remove sidewall lining (Ref Chapter 25, Passenger Cabin Lining and Insulation).
B.  Remove window assembly (Ref Passenger Cabin Windows - Removal/Installation or
Emergency Exit Hatch Window - Removal/Installation).

C.  Clean inner surface of outer pane, both surfaces of middle pane, and outboard surface of inner pane, with lukewarm water and castile soap. Use a soft, clean cloth to transfer soap solution to pane surface but go over surface with bare hand only, so that any dirt can be quickly detected and removed before it scratches surface. Wipe dry with a clean, damp chamois.
NOTE:  Do not rub surfaces with a dry cloth. It causes scratches and builds up an electrostatic charge which attracts dust particles. Inner pane referred to is part of sidewall lining removed in step A.
D.  Mix 10 parts antistatic agent with 120 parts water by weight.
500 
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