21-CONTENTS
 GUN Page 4 May 28/00 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 
757 MAINTENANCE MANUAL
 CHAPTER 21 - AIR CONDITIONING TABLE OF CONTENTS
_________________ Chapter
 Section 
 Subject_______  Subject_______  Page____  
VENTILATION SYSTEM  21-26-00 
 Description and Operation  1  
General  1 
 Component Details  1 
 Aft  1 
 Equipment/Lavatory/Galley 
 Ventilation Fan 
 Galley Ventilation Filter  4 
 Operation  4 
 Functional Description  4 
 Adjustment/Test  501  
Lavatory/Galley Ventilation  507 
 Health Check 
 Operational Test - Ventilation  501 
 System 
 FAN - AFT EQUIPMENT VENTILATION  21-26-01 
 Removal/Installation  401  
(TASK ORIENTED DATA)  401 
 FILTER - GALLEY VENTILATION  21-26-03 
 Removal/Installation  401  
VALVE - AFT EQUIPMENT  21-26-02 
 VENTILATION CHECK 
 Removal/Installation  401  
[*] GUN 001-010, 101-104
 PRESSURIZATION CONTROL 21-30-00
______________________
 Component Location 101 Component Index Component Location
EffectivityALL
ALL
ALLALL[*]
ALL
 21-CONTENTS
 GUN Page 5 May 28/00 
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. 
A 757 MAINTENANCE MANUAL
 CHAPTER 21 - AIR CONDITIONING
 TABLE OF CONTENTS_________________ 
 Chapter 
 Section 
 Subject Subject_______ _______  Page____  Effectivity___________ 
 PRESSURIZATION CONTROL SYSTEM 21-31-00 
 Description and Operation  1  ALL 
 General  1 
 Component Details  1 
 Automatic Pressure  1 
 Controller 
 Cabin Pressure Selector  1 
 Panel 
 Outflow Valve  4 
 Outflow Valve Actuator  4 
 Operation  4 
 BITE  7 
 Control  9 
 Functional Description  4 
 Adjustment/Test  501  ALL 
 Operational Test - 507 
 Pressurization Control System 
 Pressurization Control Bite  501 
 Test 
 System Test - Pressurization  509 
 Control System 
 ACTUATOR - CABIN PRESSURE 21-31-04 
 OUTFLOW VALVE 
 Removal/Installation  401  ALL 
 (TASK ORIENTED DATA)  401 
 CONTROLLER - AUTOMATIC PRESSURE 21-31-02 
 Removal/Installation  401  ALL 
 MOTOR - OUTFLOW VALVE ACTUATOR 21-31-05 
 AC 
 Removal/Installation  401  ALL 
 SELECTOR - CABIN PRESSURE 21-31-01 
 Removal/Installation  401  ALL 
 
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