S 214-006
 (5)  Make sure that the retainer is in good condition.
 (a)  If the retainer is not in good condition, replace the retainer (AMM 56-11-02/401).
 TASK 30-41-06-404-007
 3. Control Thermostat Installation (Fig. 401)
_______________________________
 A. Consumable Materials
 (1) A00062 Sealant, Thermal - Wakefield No. 120 or Dow Corning DC340
 B. References
 (1)  
AIPC 30-41-06, Fig. 1

 (2)  
SSM 30-41-01, SSM 30-41-02

 (3)  
WDM 30-41-21, WDM 30-41-31

 C. Access
 (1)  Location Zone 221 Control Cabin, RH - No. 2 and 3 Left Side Windows 222 Control Cabin, LH - No. 2 and 3 Right Side Windows
 D. Procedure
 S 434-009
 (1)  
Connect the wiring at the thermostat.

 S 434-010

 (2)  
Lift the retainer spring.

 S 344-026

 (3)  
Apply a thin coat of thermal sealant to the window surface area under the thermostat.

 S 424-011

 (4)  
Hold the thermostat in place against the window and lower the retainer spring. Put the end of the spring in the slot on the thermostat.

 S 864-012

 (5)  
Close 6E28, WINDOW HEAT PWR 2L & 3R and 6E30, WINDOW HEAT PWR 3L & 2R circuit breakers on the P6, Main Power Distribution Panel.

 TASK 30-41-06-004-013
 4. Overheat Thermostat Removal (Fig.___________________________401)
 A. References
 (1)  
AMM 56-11-02/401, No. 2 and 3 Windows

 (2)  
AIPC 30-41-06, Fig. 2

 (3)  
SSM 30-41-01, SSM 30-41-02

 (4)  
WDM 30-41-21, WDM 30-41-31

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 ALL  ú ú 01 Page 403 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 B. Access
 (1)  Location Zone 221 Control Cabin, RH - No. 2 and 3 Left Side Windows 222 Control Cabin, LH - No. 2 and 3 Right Side Windows
 C. Procedure
 S 864-014
 (1)  
Open 6E28, WINDOW HEAT PWR 2L&3R and 6E30, WINDOW HEAT PWR 2R&3L circuit breakers on the P6, Main Power Distribution Panel.

 S 024-015

 (2)  
Lift the retainer spring (1) and remove the thermostat (2) from the

 rubber ring (3): ~........................................ | Window 2L | Overheat Thermostat S1027| .......................................... | Window 3L | Overheat Thermostat S1026| .......................................... | Window 2R | Overheat Thermostat S1028| .......................................... | Window 3R | Overheat Thermostat S1029| 2.............…..........................1
 S 034-016
 (3)  
Disconnect the wiring from the thermostat (2).

 S 434-017

 (4)  
Lower the spring (1) against the windowpane.

 TASK 30-41-06-404-018
 5. Overheat Thermostat Installation (Fig.________________________________401)
 A. Consumable Materials
 (1) A00062 Sealant, Thermal - Wakefield No. 120 or Dow Corning DC340
 B. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Spring | 30-41-06 | 02 | 50 | | | 2 | Switch - Thrm (Thermostat) | | | 65 | | | 3 | Retainer (Rubber Ring) | | | 60 | 2......…........…...................................…...........….....…........1
 C. References
 (1)  
AMM 56-11-02/401, No. 2 and 3 Windows

 (2)  
SSM 30-41-01, SSM 30-41-02

 (3)  
WDM 30-41-21, WDM 30-41-31

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 ALL  ú ú 03 Page 404 ú Jun 18/01
　
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