A 747-400 MAINTENANCE MANUAL
D633U101-E1

BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 CHAPTER 29 - HYDRAULIC
 TABLE OF CONTENTS_________________
 Chapter
 Section
 Subject_______  Subject_______  Page____  Effectivity___________
 HYDRAULIC POWER_______________ 29-00-00
 Description and Operation  1  ALL
 General  1
 Fluid - Hydraulic  4
 Supply Systems - Main Hydraulic  1
 Systems - Indicating and Warning  2
 Tubing, Hoses, and Fittings - 3
 Hydraulic
 Units - Modular  3
 Valves - Hydraulic System Check  3
 Hydraulic Fluid  601
 Inspection/Check  601  ALL
 MAIN HYDRAULIC SUPPLY SYSTEM____________________________ 29-10-00
 Component Location  101  ALL
 Component Index
 Component Location
 MAIN HYDRAULIC SUPPLY SYSTEM  29-11-00
 Description and Operation  1  ALL
 General  1
 Exchanger - Heat  5
 Filters - Hydraulic Fluid  5
 Module (HYDIM) - Hydraulic  6
 Interface
 Module - Case Drain  6
 Module - Pressure  5
 Module - Reservoir  6
 Pressurization
 Module - Return  6
 Pump - Demand  4
 Pump - Engine-Driven  1
 Reservoir  4
 Valve - Hydraulic Supply  5
 Shutoff
 Operation  6

 29-CONTENTS
 GUN Page 1 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 CHAPTER 29 - HYDRAULIC
 TABLE OF CONTENTS
_________________
 Chapter Section Subject_______ Subject ____ Effectivity
_______ Page ___________
 Maintenance Practices 201 ALL General 201 Bleed the Hydraulic System 227 Depressurization - Hydraulic 218
 System
 Fluid - Hydraulic System, 244
 Replacement
 Flush a Demand Pump Pressure 236

 Line and Case Drain Line
 Flush a Return Line 239
 Flush an EDP Pressure Line and 230

 Case Drain Line
 Flush the Hydraulic System 221
 Pressurization - Hydraulic 211

 System, With a Demand Pump
 Pressurization - Hydraulic 205
 System, With a Hydraulic
 Service Cart

 Pressurization - Hydraulic 216
 System, With an Auxiliary AC
 Hydraulic Pump

 Pressurization - Hydraulic 213
 System, With an Engine-Driven
 Pump (EDP)

 29-CONTENTS
 GUN Page 2 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 CHAPTER 29 - HYDRAULIC
 TABLE OF CONTENTS
_________________
 Chapter Section
 Subject_______  Subject ____ Effectivity_______ Page ___________
 Inspection/Check 601 ALL General 601 Differential Pressure 674
 Indicators - Pressure and
 Return Filters
 Gross Internal Leakage Check -602
 Hydraulic System No. 1
 Gross Internal Leakage Check -606
 Hydraulic System No. 2
 Gross Internal Leakage Check -610
 Hydraulic System No. 3
 Gross Internal Leakage Check -615
 Hydraulic System No. 4
 Hydraulic System External 680D

 Leakage Check
 Internal Leakage Check 680H
 Internal Leakage Check -619

 Hydraulic System No. 1
 Internal Leakage Check -632
 Hydraulic System No. 2
 Internal Leakage Check -647
 Hydraulic System No. 3
 Internal Leakage Check -662
 Hydraulic System No. 4
 Movement of the Fluid Between 680L
 the Hydraulic Systems Check

 29-CONTENTS
 GUN Page 3 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 CHAPTER 29 - HYDRAULIC
 TABLE OF CONTENTS
_________________
 Chapter Section Subject_______ Subject ____ Effectivity
_______ Page ___________
 AIR FILTER AND WATER SEPARATOR -29-11-15
 TURBINE DRIVE

 Maintenance Practices 201 ALL General 201 Air Filter and Water 203
 Separator - Installation Air Filter and Water 202 3
 Separator - Removal Clean an Air Filter 213 Clean the Water Separator 215
　
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