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30-21-11
ALL ú ú 01 Page 404 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
INLET COWL TAI PRESSURE SWITCH - REMOVAL/INSTALLATION
_____________________________________________________
1. General
_______
A. This procedure contains two tasks:
(1)
The removal of the pressure switch from the Inlet Cowl Anti-Ice System
(2)
The installation of the pressure switch in the Inlet Cowl Anti-Ice System.
B. Each task contains steps for both the left and right engines. Use only the steps that are applicable to the engine in work.
C. This procedure refers to "thermal anti-ice" as "TAI".
TASK 30-21-21-004-001
2. Inlet Cowl TAI Pressure Switch Removal (Fig. 401)
______________________________________
A. References
(1) AMM 71-11-02/201, Fan Cowl Panels
B. Access
(1)
Location Zone
502 Fan Cowl, Left Engine
603 Fan Cowl, Right Engine
(2)
Access Panels
5737 Fan Cowl Panel (RH) - Left Engine
5837 Fan Cowl Panel (RH) - Right Engine
C. Procedure
S 864-009
(1) Open the applicable circuit breakers and attach DO-NOT-CLOSE tags:
(a) On the P18 panel
1) For the left engine: a) ENG 1 AND WING A/I CONTROL b) ENG 1 COWL ANTI-ICE
2) For the right engine: a) ENG 2 AND WING A/I CONTROL b) ENG 2 COWL ANTI-ICE
S 014-010
(2) Open the right hand, fan cowl panel for the applicable engine (AMM 71-11-02/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-21-21
ALL ú ú 02 Page 401 ú Mar 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
SEE A
TAI PRESSURE SWITCH
TAI
VALVE
FWD
TAI OVERHEAT
A SWITCH
Inlet Cowl TAI Pressure Switch Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
30-21-21
ALL ú ú 01 Page 402 ú Nov 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 024-011
(3) Remove the switch.
(a)
Disconnect the D2558 electrical connector from the switch.
(b)
Remove the fitting from the switch.
(c)
Put a temporary cap on the fitting.
(d)
Remove the clamp from the switch.
(e)
Remove the switch from the bracket.
TASK 30-21-21-404-012
3. Inlet Cowl TAI Pressure Switch Installation___________________________________________
A. Consumable Materials
(1) D01062, Compound - Anti-Seize, Bostik Never-Seez Pure Nickel
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 71-11-02/201, Fan Cowl Panels
C. Access
(1)
Location Zone
502 Fan Cowl, Left Engine
603 Fan Cowl, Right Engine
(2)
Access Panels
5737 Fan Cowl Panel (RH), Left Engine
5837 Fan Cowl Panel (RH), Right Engine
D. Procedure
S 424-013
(1) Install the switch.
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