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 E. Prepare for the Removal.
 S 864-002
 WARNING: BE CAREFUL WHEN YOU DO MAINTENANCE ON THE FLIGHT COMPARTMENT
_______ WINDOWS. YOU MUST OPEN THE CIRCUIT BREAKERS AND THE WINDOW HEAT SWITCHES. FAILURE TO DO THIS CAN CAUSE AN ELECTRICAL SHOCK TO PERSONS THAT TOUCH THE WINDOW SURFACES, THE ELECTRICAL TERMINALS AND THE LEADS.
 (1)  Put the window heat switches in the OFF position.
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MAINTENANCE MANUAL

NO. 2 WINDOW SEE

No. 2 and 3 Window Installation
Figure 401 (Sheet 1)

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MAINTENANCE MANUAL

No. 2 and 3 Window Installation
Figure 401 (Sheet 2)

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A 747-400 MAINTENANCE MANUAL
STATION 340

THERMOSTAT SEE

6. NUT

SEALANT
NO. 2 AND 3 WINDOWS
BOLT INSTALLATION
B-B

YOU CAN INSTALL ONE OR MORE WASHERS TO KEEP THE SAME GRIP LENGTH.
No. 2 and No. 3 Window Installation Figure 401 (Sheet 3)
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MAINTENANCE MANUAL

WINDOW
3. RETAINING BOLT RETAINING NUT METAL WASHER RUBBER WASHER
RETAINING
SPRING

RUBBER
RING

THERMAL SEALANT
OVERHEAT
THERMOSTAT

THERMOSTAT RETAINING BRACKET
OVERHEAT THERMOSTAT WINDOW
(EXAMPLE NO. 2 AND 3 WINDOWS)

C
CONTROL THERMOSTAT SPRING RETAINER
CONTROL THERMOSTAT
CONTROL THERMOSTAT (EXAMPLE NO. 2 AND 3 WINDOWS)
D
Window No. 2 and 3 Installation
Figure 401 (Sheet 4)

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MAINTENANCE MANUAL

CRASH
PADS

AIR DISTRIBUTION DUCT (ONE PIECE)
INBD
NOTE:UNDERNEATH THE VERTICAL SIDEWALL LINING IS THE FIBERGLASS DRIPSHIELD.
Window No. 2 and 3 Installation Figure 401 (Sheet 5)
 A80922
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 (2)  S 864-003Open these circuit breakers and attach DO-NOT-CLOSE tags: (a) P6 Main Power Distribution Panel 1) 6B17 WINDOW HEAT 1R 2) 6B34 WINDOW HEAT 1L 3) 6E28 WINDOW HEAT 2L & 3R PWR 4) 6E30 WINDOW HEAT 2R & 3L PWR (b) P180 DC Power Distribution Panel 1) 180H12 WDO HEAT CONT 1R 2) 180H26 WDO HEAT CONT 1L
 (3)  S 954-004Install the protective tape or the spray coating on the inner and the outer surfaces of the window.
　
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