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A
747-400
MAINTENANCE MANUAL
WINDSHIELD
(LEFT SIDE IS SHOWN, RIGHT SIDE IS OPPOSITE)
Washer Fluid Spray Pattern
Figure 402
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K27154
A
747-400 MAINTENANCE MANUAL
2) 6B17, WINDOW HEAT 1R PWR
(b) P180, DC Power Distribution Panel
1) 180H26, WDO HEAT CONT 1L
2) 180H12, WDO HEAT CONT 1R
S 864-016
(9) Remove electrical power (AMM 24-22-00/201).
TASK 30-44-02-004-017
4. Nozzle Fitting Removal (Fig. 401)______________________
A. Consumable Materials
(1)
G00507, Cloth - Lint Free (to catch repellent fluid drops)
(2)
G00040, Cord - Nylon (to hold the nozzle fitting and supply hoses)
B. References
(1)
AIPC 30-43-00, Fig. 5
(2)
AMM 31-61-02/401, Integrated Display Unit
(3)
SSM 30-42-01
(4)
WDM 30-43-11
C. Access
(1) Location Zone 221 Control Cabin, LH - Captain's Instrument Panel and Outside No. 1 Left Window
222 Control Cabin, RH - First Officer's Instrument Panel and Outside No. 1 Right Window
D. Procedure
S 864-020
WARNING:_______MAKE SURE TO OPEN THE WINDOW HEAT CIRCUIT BREAKERS. YOU CAN GET AN ELECTRICAL SHOCK IF YOU TOUCH THE WINDSHIELD WHEN THE WINDOW HEAT POWER IS ON.
WARNING: MAKE SURE TO OPEN THE CIRCUIT BREAKERS FOR THE CAPTAIN'S AND
_______ THE FIRST OFFICER'S SEATS BEFORE YOU DO WORK AROUND THEM. A FAILURE TO OPEN THE CIRCUIT BREAKERS CAN CAUSE THE SEATS TO MOVE ACCIDENTALLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7, Overhead Circuit Breaker Panel
1) 7E26, WSHLD WASH
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A 747-400 MAINTENANCE MANUAL
(b) (c) (d) (e) P6, Main Power Distribution Panel 1) 6B32, WINDSHIELD WASH PUMP 2) 6B34, WINDOW HEAT 1L PWR 3) 6B17, WINDOW HEAT 1R PWRP180, DC Power Distribution Panel 1) 180H26, WDO HEAT CONT 1L 2) 180H12, WDO HEAT CONT 1RP414, Left Power Distribution Center 1) 414D8, CAPT PWR SEATP415, Right Power Distribution Center 1) 415H32, F-O PWR SEAT
(2) S 014-021Do this task for the PFD and ND on the captain's or the first officer's P2 panel: "Integrated Display Unit Removal" (AMM 31-61-02/401).
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