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747-400
MAINTENANCE MANUAL

No. 1 Window (Windshield) Installation
Figure 401 (Sheet 1)

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747-400
MAINTENANCE MANUAL

SLING ATTACHMENT POINT
(3 LOCATIONS)
B-B

No. 1 Window (Windshield) Installation
Figure 401 (Sheet 2)

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747-400 MAINTENANCE MANUAL
 2) 6B34 WINDOW HEAT 1L
 3) 6E28 WINDOW HEAT 2L & 3R PWR
 4) 6E30 WINDOW HEAT 2R & 3L PWR

 (b)  
P7 Overhead Circuit Breaker Panel
 1) 7E1 WINDSHIELD WIPER L
 2) 7E25 WINDSHIELD WIPER R

 (c)  
P180 DC Power Distribution Panel
 1) 180H12 WDO HEAT CONT 1R
 2) 180H26 WDO HEAT CONT 1L

 S 434-109
 (3)  Apply the protective paper on the inner and the outer surfaces of the window.
 S 024-067
 CAUTION: HOLD THE HEAT TERMINAL BLOCKS WHEN YOU TIGHTEN OR LOOSEN THE
_______ SCREWS. THIS WILL PREVENT DAMAGE TO THE TERMINALS ON THE WINDSHIELD.
 (4)  Disconnect the electrical wires from the bus bars and the control sensor.

Aerodynamic Smoother Removal
Figure 402

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747-400 MAINTENANCE MANUAL
 G.  Remove the Windshield.
 S 014-006
 (1)  
Remove the hole plugs for the window handling sling from the windshield (Fig. 401).

 S 024-042

 (2)
Remove applicable bolts (2) to install the sling. (Fig. 401).

 S 024-009

 (3)  
Attach the sling to the windshield (Fig. 403).

 S 494-043

 (4)  
Tighten the bolts until the pressure seal is broken (approximately 20-30 pound-inches).

 S 094-010

 (5)  
Remove the remaining bolts (2).

 S 024-013

 (6)  
Remove the windshield (1) from the frame and hold it in a position above the frame.

 H.  On triplex windshields, remove the short jumper wire on the lower outboard side of the windshield:
 S 014-105
 CAUTION: MAKE SURE SLING ATTACHMENT IS SECURE AND WINDOW REMAINS IN A
_______ STATIONARY POSITION. DAMAGE CAN OCCUR TO THE WIRING DUE TO SUDDEN MOVEMENTS OF THE WINDOW. REMOVE ANY AND ALL ELECTRICAL CONNECTIONS WITHOUT CAUSING SUDDEN MOVEMENT OF WINDOW.
 (1)  
Remove the cap over the terminal connector.

 S 024-097

 (2)  
Remove the screw and washer that attaches the terminal connector to the terminal block.

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TURNBUCKLE
747-400 MAINTENANCE MANUAL 
ATTACH RING  (NONADJUSTABLE) CABLE 
SEE A SLING ATTACH BOLT 

INBD  CABLE 
FWD 
5/16 INCH BOLT 
A SLING ATTACH BOLT 

Windshield Handling Sling Installation
Figure 403
　
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