(b)  
P6, Main Power Distribution Panel
 1) 6B34, WINDOW HEAT 1L PWR
 2) 6B17, WINDOW HEAT 1R PWR

 (c)  
P180, DC Power Distribution Panel
 1) 180H26, WDO HEAT CONT 1L

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A 747-400 MAINTENANCE MANUAL 
SEE  A 
WASHER 
SEE  C  SEE  B  ON L-WINDSHIELD-R 
PILOT'S OVERHEAD PANEL 
A 
SOLENOID LEFT VALVE  FAIRING MOUNTING BOLT  A  (SINGLE HOLE) WASHER JET 
VALVE RIGHT SOLENOID  WASHER CONTAINER FLUID  NOZZLE FAIRING NOZZLE THREADS RETAINING  ADJUSTMENT SCREWS O-RINGS PLATE 
AIRPLANE SKIN 
PUMP  B  DRIP TRAY  NOZZLE  FAIRING SEALANT  NOZZLE FITTING VALVE CHECK A  FLUID WASHER 
C 
PLATE 
Windshield Washer Nozzle Components Installation Figure 401 A-A 

K27151
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A
747-400 MAINTENANCE MANUAL
 2) 180H12, WDO HEAT CONT 1R
 S 034-003
 (2)  
Remove the mounting screw from the nozzle fairing and remove the fairing.

 S 164-004

 (3)  
Remove the sealant from the fairing and the plate.

 S 114-005

 (4)  
Clean the surfaces of the nozzle fairing and the plate with solvent.

 S 024-006

 (5)  
Remove the nozzle:

 (a)  
Loosen the three adjustment screws at the bottom of the nozzle.

 (b)  
Turn the nozzle assembly counterclockwise by hand to remove it from the fitting attached to the airplane structure.

 (c)  
Remove the nozzle assembly. Discard the 2 O-rings.

 TASK 30-44-02-404-007
 3.  Nozzle Installation (Fig. 401)___________________
 A. Consumable Materials
 (1)  
G00507, Cloth - Lint Free (to clean the nozzle fitting)

 (2)  
A00247, Sealant - BMS 5-95, Class B

 (3)  
B00184, Solvent - BMS 11-7

 B. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AIPC 30-43-01, Fig. 1

 (3)  
SSM 30-42-01

 (4)  
WDM 30-43-11

 C. Access
 (1)  Location Zone 221 Control Cabin, LH - Outside No. 1 Left Window 222 Control Cabin, RH - Outside No. 1 Right Window
 D. Procedure
 S 424-008
 (1)  Install the nozzle:
 (a)  
Clean the fluid out of the nozzle fitting with a lint-free cloth.

 (b)  
Make the new O-rings wet with water and install them on the nozzle shaft and the nozzle fitting.

 (c)  
Use your hand to turn the nozzle assembly clockwise 6 to 7 turns in the fitting.

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A 747-400 MAINTENANCE MANUAL
 (d) (e)  Point the nozzle approximately toward the center of the No. 1 window.Turn the three alignment screws clockwise until they touch the plate (do not tighten them).
 (2)  S 864-009Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P7, Overhead Circuit Breaker Panel 1) 7E26, WSHLD WASH
 (3)  S 864-010Supply electrical power (AMM 24-22-00/201).
　
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