(2)
The O-rings

 (3)
The seal washers.

 E.  The aerodynamic smoother is installed in the area between the window frame and the edge of the bumper strip. It gives aerodynamic flushness and protection against water entrapment. A nylon cord or nylon thread is installed below the aerodynamic smoother to make the removal of the smoother easier.
 F.  The O-rings are made of black ethylene propylene. They are installed adjacent to the nut washers. On the fasteners where there are seal washers, they are installed in a different location. The O-rings can compress a set quantity to transmit sufficient compression load into the window. This will cause the seal bead to compress and make a weather seal. On fasteners adjacent to the windshield heat terminals, it is recommended that you use colored silicone rubber O-rings. The colored silicone rubber O-rings are not conductive and are preferred to ethylene propylene O-rings. No clearance with a terminal is necessary when you use the O-rings that are not conductive. You can use the silicone O-rings instead of the ethylene propylene O-rings at all locations if you want to.
 G.  The seal washers are made from silicone rubber. They are installed on the inboard end of the spacers. They are adjacent to the nut washer at the fastener locations on the window shown on Fig. 401. The seal washers function almost the same as the O-rings.
 H.  The replacement windows come with necessary parts for the installation. There is a protective layer on the two sides of the panes.
 TASK 56-11-11-004-001-B00
 2.  Window No. 1 Removal____________________
 A.  References
 (1) 20-50-11, Standard Overhaul Practices.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 56-11-11
 ALL  ú ú B01 Page 401 ú Mar 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (2)  
AMM 25-11-11/201, Flight Compartment Equipment

 (3)  
AMM 25-11-21/201, Flight Compartment Lining and Insulation

 (4)  
AMM 30-42-11/401 Windshield wiper assembly

 (5)  
IPC 56-10-00, Fig. 1

 B. Access
 (1)  Location Zones
 101 Control Cabin, Left
 102 Control Cabin, Right

 C. Prepare for the Removal
 S 864-086-B00
 (1)  
Put all the window heat switches in the OFF position.

 S 864-087-B00

 (2)  
Open these circuit breakers and attach DO-NOT-CLOSE tag:

 (a)  
P6-11 Window heat, Right side

 (b)  
P6-11 Window heat, Left front

 (c)  
P6-11 Window heat, Left 4 and Left 5

 (d)  
P6-12 Window heat, Left side

 (e)  
P6-12 Window heat, Right front

 (f)  
P6-12 Window heat, Right 4 and Right 5

 (g)  
P18-3 Window heat Left/Right AC

 (h)  
P18-3 Window heat Left/Right DC

 (i)  
P18-3 Wipers Left/Right

 (j)  
P6-3 Standby backgrd

 (k)  
P6-3 Backgrd

 S 014-002-B00
 WARNING: THE OUTPUT VOLTAGE OF THE AUTOTRANSFORMER RANGES FROM 250 TO
_______ 350 VOLTS. YOU MUST BE CAREFUL WHEN YOU REMOVE THE WINDOW OR YOU CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  
Remove the trim panels and the crash pads where it is necessary (AMM 25-11-21/201).

 S 014-003-B00

 (4)  
Remove the sight guide for the seat adjustment and the glareshield (lightshield) (AMM 25-11-11/201).

 S 034-083-B00

 (5)  
Remove the four screws holding each of the lower covers on the lightshield, when it is necessary.

 NOTE:____Make sure you Identify the screws for re-installation. These screws are different and each screw must go back in its correct location.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 56-11-11
 ALL  ú ú B01 Page 402 ú Mar 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
　
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