Fan Removal
e GE AIRCRAFT ENGINES CUSTOMER TECHNICAL EDUCATION CENTER FAN STATOR REMOVAL/INSTALLATION BOEING 777 GEK 109976 SEP 05
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GE AIRCRAFT ENGINES CUSTOMER TECHNICAL EDUCATION CENTER
FAN STATOR REMOVAL/INSTALLATION BOEING 777 GEK 109976 SEP 05
GE90 110B & 115B
GE Aircraft Engine PROPRIETARY
.
1. Introduction
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
GE90 Fan Stator Removal/Installation
g Document: GEK 109976 Issued: Sep 05 Published by: Customer Training Services GE Aircraft Engines Customer Technical Education Center 123 Merchant Street Cincinnati, Ohio 45246
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
This publication is for TRAINING PURPOSES ONLY. This information is accurate at the time of compilation; however, no update service will be furnished to maintain accuracy. For authorized maintenance practices and specifications, consult the pertinent Maintenance Publication. This product is considered GE Aircraft Engines technical data information and therefore is exported under U.S. Government Export License Regulations. It is issued to the user under specific conditions that; the contained data, or it's product may not be resold, diverted, transferred, trans-shipped, re-exported, or used in any other country without prior written approval of the U.S. Government. Proprietary Information Notice The information contained in this document is disclosed in confidence. It is the property of GE and shall not be used (except for evaluation), disclosed to others, or reproduced without the expressed written consent of GE. If consent is given for reproduction in whole or in part, this notice shall appear on any such reproduction, in whole or in part. The foregoing is subject to any rights the U.S. Government may have acquired as such information. Copyright 2005 GE Aircraft Engines
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TRAINING MANUAL
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TRAINING MANUAL
TABLE OF CONTENTS Section
Topic
Revised
Page Numbers
1.
Introduction Table of Contents ........................................................................ Sep/05 ................................ 1 - 5 Acronyms and Abbreviations ..................................................... Sep/05 ................................ 6 - 7 Engine General ............................................................................ Sep/05 ................................ 8 - 9 Fan Stator Module Removal/Installation Introduction .............. Sep/05 ............................ 10 - 12
2.
Fan Stator Module Removal/Installation - Equipment .................... Sep/05 .............................. 1 - 18
3.
Fan Stator Module Removal/Installation - Engine Preparation ..... Sep/05 .............................. 1 - 56
4.
Fan Stator Module R & I - 9C6030 Transfer System ....................... Sep/05 .............................. 1 - 14
5.
Replacement Engine Test ................................................................ Sep/05 ................................ 1 - 4
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TRAINING MANUAL
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TRAINING MANUAL
ABBREVIATIONS & ACRONYMS
ALF AMM CTEC EAI EBU EDP EEC FHF FLA FADEC GEAE HMU HPT IDG LH LPT MFP OGV PRSOV RH R&I QEC VBV VSV
Aft Looking Forward Aircraft Maintenance Manual Customer Technical Education Center Engine Anti-Ice Engine Buildup Unit Engine Driven Pump Electronic Engine Control (also FADEC) Fan Hub Frame Forward Looking Aft Full Authority Digital Engine Control (also EEC) GE Aircraft Engines HydroMechanical Unit High Pressure Turbine Integrated Drive Generator Left Hand Low Pressure Turbine Main Fuel Pump Outlet Guide Vane(s) Pressure Regulating Shut Off Valve Right Hand Removal & Installation Quick Engine Change Variable Bleed Valve Variable Stator Vanes
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE GENERAL The GE90 has been designed to power the BOEING 777 and future airplanes. With an initial thrust of 76,000 lbs it has a growth capability up to 115,000 lbs ( and more ).
Type of engine:
The GE90 is an ultrahigh bypass (9:1), variable stator, axial-flow turbofan propulsion system designed to meet high thrust commercial jet engine requirements of advanced aircraft manufactured during the mid 1990's and beyond.
Rotation: (both rotors)
The 75K to 115K+ lbs thrust family of engines is designed to provide 10% improvement in specific fuel consumption (SFC), and 33% lower emissions over previous commercial turbofan engines. In addition, its reduced noise level permits operation at the most noise sensitive airports in the world. The specific fuel consumption (SFC) improvement is achieved through a higher efficiency engine cycle. A higher overall pressure ratio than current engines gives higher thermal efficiencies, while the higher bypass ratio (BPR) provides improved propulsion efficiency. The GE90 is designed for ease of maintainability and high overall system reliability. Many of the components were derived from proven designs on existing engines. This derivative heritage provides a sound foundation for the components and systems of the GE90. EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
Arrangement:
Turbofan engine Two spool axial airflow Clockwise (AFT looking Forward)
Compressors: - Fan: - Booster: - High pressure compressor: Combustion chamber: Turbines: - High pressure turbine: - Low pressure turbine:
Single stage Four stages Nine stages
Dual-dome annular
Two stages Six stages
Dimensions: - Engine (no EBU or inlet): - Nominal length: 287.36 inches (7.300 m) - Nominal width: 134.86 inches (3.425 m) - Nominal weight (dry): 18,291 lbs (8314 kg) - Powerplant (with EBU and inlet): - Nominal length: 323.24 inches (8.210 m) - Nominal width: 166.46 inches (4.228 m) - Nominal weight (dry): 18,982 lbs (8628 kg)
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GE90
TRAINING MANUAL
FAN DIAMETER = 128 IN. (3.524 2 M)
FAN STATOR DIAMETER = 134.86 IN. (3.425 M)
POWER PLANT HEIGHT = 166.46 IN. (4.228 M)
GE AIRCRAFT ENGINES
SPARE ENGINE LENGTH = 190.84 IN. (4.847 M) INSTALLABLE SPARE ENGINE LENGTH = 287.36 IN. (7.300 M) POWERPLANT OVERALL LENGTH = 323.24 IN. (8.210 M)
GE90 PROPULSION SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION INTRODUCTION The GE90 is designed for high overall system reliability and maintainability based on the relevant experience on different successful programs. Due to its size, the engine is designed around the principle of the fan stator module removal into two parts: - The fan stator module - The engine propulsor This removal increases the engine transportability and reduces the number and the cost of the spare parts by reusing some engine hardware.
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GE AIRCRAFT ENGINES
GE90 FAN STATOR MODULE
TRAINING MANUAL ENGINE PROPULSOR
9C6025 SHIPPING AND INSTALLATION STAND
9C6030 FAN STATOR MODULE TRANSFER CARRIAGE
FAN STATOR MODULE REMOVAL/INSTALLATION EQUIPMENT EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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2. Equipment
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION - EQUIPMENT
Objectives: At the completion of this section a student should be able to: ... identify the tooling required for fan stator module removal/installation
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION EQUIPMENT The equipment to do the fan stator module removal is as follows: - 9C6025 shipping and installation stand - 9C6030 fan stator module transfer system - 9C6014 personnel stand - 9C1202 fan blade spacer removal tool or 9C3001 fan blade spacer removal tool - 9C6031 component shipping container - 9C6028 fan blade shipping container
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
The equipment to do the fan stator module installation is as follows: - 9C6025 shipping and installation stand - 9C6030 fan stator module transfer system - 9C6014 personnel stand - 9C1277 guide pin set - 9C6031 component shipping container - 9C6028 fan blade shipping container
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GE AIRCRAFT ENGINES
GE90 FAN STATOR MODULE
TRAINING MANUAL ENGINE PROPULSOR
9C6025 SHIPPING AND INSTALLATION STAND
9C6030 FAN STATOR MODULE TRANSFER CARRIAGE
FAN STATOR MODULE REMOVAL/INSTALLATION EQUIPMENT EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6025 INSTALLATION AND SHIPPING STAND The 9C6025 stand allows: - the removal and installation of the engine to the airplane wing. - the removal and installation of the fan stator case from the propulsor. - the air and ground transportation of the propulsor. It is made up of two main parts: - the cradle - the base. Two aft cradle to engine support adapters and two forward cradle to engine support adapters allow for the support of the propulsor or engine. There are hydraulic jacks near each wheel of the stand. The hydraulic jacks are controlled from a central hydraulic hand pump located on the left side of the stand. There is a hand operated hyraulic pump attached to the base for raising and lowering of the cradle on the base. Forklift tubes are positioned within the base and usable from either side of the stand. EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
FORWARD ENGINE SUPPORT ADAPTERS
TRAINING MANUAL
CRADLE ASSEMBLY
AFT ENGINE SUPPORT ADAPTERS
HYDRAULIC JACK (DEPLOYED)
TOW BAR STOW
BASE ASSEMBLY
STORAGE BOX
HYDRAULIC HAND PUMP
FORKLIFT TUBE STEERING BAR STOW
9C6025 INSTALLATION AND SHIPPING STAND EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6030 FAN STATOR MODULE TRANSFER SYSTEM The 9C6030 fan stator module transfer system supports the fan stator module. The 9C6030 transfer system is attached to the GE90 fan stator module and is used to remove or intall the fan stator module onto the propulsor. To align the fan stator module to the propulsor, all adjustments are made to the fan stator module using the 9C6030 fan stator module transfer system. The 9C6030 has two Aft Adapters, two Forward Adapters, two 94B Forward Adapter Plates and two Side Frames. All four wheels of the side frames are individually adjustable up and down.
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GE AIRCRAFT ENGINES
GE90
FORWARD ADAPTER (LEFT)
FORWARD ADAPTER (RIGHT)
SIDE FRAME (LEFT)
TRAINING MANUAL
AFT ADAPTER (RIGHT)
AFT ADAPTER (LEFT)
SIDE FRAME (RIGHT)
9C6030 FAN STATOR MODULE TRANSFER SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C1202 FAN BLADE SPACER REMOVAL TOOL The 9C1202 fan blade spacer removal tool is used to remove the fan blade spacer. Fan Blade Spacer Removal: - Place the detail pin in the bolt hole of the fan blade spacer. - move the slide hammer aft and forward to remove the fan blade spacer.
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C1202 FAN BLADE SPACER REMOVAL TOOL EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
FAN BLADE SPACER REMOVAL/INSTALLATION TOOLS The 9C3001 fan blade spacer removal tool is used to remove the fan blade spacers. Fan Blade Spacer Removal: - Place the fan blade spacer removal tool detail pin into the fan blade spacer bolt hole and use hydraulic pressure to remove the fan blade spacer.
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GE90
TRAINING MANUAL
9C3001FAN BLADE SPACER REMOVAL TOOL EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6014 PERSONNEL STAND The 9C6014 personnel stand allows for access to the fan stator module forward flange bolts. The stand is made up of three parts and is placed into the fan stator module after the fan blades have been removed. When assembled, the 9C6014 personnel stand provide steps for the mechanic to reach the upper bolts of the fan stator module forward bolt flange. Forklift tubes are positioned within the stand and usable from the front side of the stand.
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GE90
TRAINING MANUAL
B
A
9C6014 STAND B
9C6014 PERSONNEL STAND EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C1277 GUIDE PIN SET The 9C1277 guide pin set is used align the fan stator module bolt flanges onto the propulsor bolt flanges. The guide pin set contains eight guides pins. The guide pins are installed by hand into the fan stator module aft bolt flange. - Install the guides pins at equal distances around the aft fan stator module bolt flange.
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GE AIRCRAFT ENGINES
AFT FAN STATOR MODULE FLANGE
GE90
TRAINING MANUAL
FAN STATOR MODULE OUTLET GUIDE VANES
9C1277 GUIDE PIN (8 LOCATIONS)
FORWARD FAN STATOR MODULE FLANGE GUIDE PIN
FAN HUB FRAME
9C1277 GUIDE PIN SET EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
9C6031 SPINNER AND COMPONENTS SHIPPING CONTAINER & 9C6028 FAN BLADES SHIPPING CONTAINER The purpose of these containers is to ensure the transportation and the storage of the fan case module reusable hardware, in a safe and secure manner. Each is made up of two main parts: - the fiberglass cover - the metal base assembly. A document storage receptacle and a view port are provided. Hoist rings are built into the cover for removal and installation of the cover. Forklift tubes are positioned within the base and usable from either side of the unit.
- fan blade retainers - spinner - support ring - acoustic panels - air bleed deflector panels - blankoff panels - lower bifurcation module - drain module - center vent tube extension - starter air duct - booster anti-ice tubes - booster splitter fairing. 9C6028 Fan Blade Shipping Container holds: - fan blades
The interior is divided in several areas to ensure proper support of items during all container motions. The container has been designed to ship the following items: 9C6031 Components Shipping Container holds: - fan blade platforms - fan blade spacers - dovetail key EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
9C6031 CONTAINER
FIBERGLASS COVER
FAN BLADES
FIBERGLASS COVER
BASE
BASE 9C6028 CONTAINER
BASE
9C6031 FAN BLADES, SPINNER AND COMPONENTS SHIPPING CONTAINER EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
9C6028 FAN BLADE SHIPPING CONTAINER
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TRAINING MANUAL
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3. Engine Preparation
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION - ENGINE PREPARATION
Objectives: At the completion of this section a student should be able to: ... identify the engine items removed for fan stator module removal/installation
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE PREPARATION FOR FAN STATOR MODULE REMOVAL/INSTALLATION Prepare the engine for removal of the fan stator module from the engine propulsor.
Complete the engine preparation after the fan stator module as been installed on the engine propulsor.
Note: The steps of engine preparation can be done with the engine on wing or in the installation/shipping stand.
Note: The steps of engine preparation can be done with the engine in the installation/shipping stand or on wing.
Following are the main steps of engine preparation for the engine fan stator removal:
Following are the main steps of engine preparation after the engine fan stator module installation:
- drain the oil from the engine, IDG and Backup Generator - remove the drain and service module assembly - disconnect the electrical harnesses from the fan stator assembly - remove the lower hydraulic bifurcation assembly - remove the blank off panels - remove the upper and lower fillet fairings - remove the air bleed defector panels - remove the upper and lower bifurcation bridges - disconnect the seal pressurization and oil tank vent tube - disconnect the EAI duct - remove the spinner and support ring - remove the fan blade platforms - remove the fan blades and mounting hardware - remove the acoustic panels - remove the booster anti-ice tubes and splitter fairing EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
- install the splitter fairing and booster anti-ice tubes - install the acoustic panels - install the fan blades and mounting hardware - install the fan blade platforms - install the support ring and spinner - connect the EAI duct - connect the seal pressurization and oil tank vent tube - install the upper and lower bifurcation bridges - install the bleed air deflector panels - install the upper and lower fillet fairings - install the blank off panels - install the lower hydraulic bifurcation assembly - connect the electrical harnesses to the fan stator module assembly - install the drain and service module assembly - fill the oil of the engine, IDG and Backup Generator.
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GE AIRCRAFT ENGINES
GE90
BLEED AIR DEFLECTOR PANELS
TRAINING MANUAL
ENGINE PROPULSOR
BOOSTER SPLITTER FAIRING
ENGINE PREPARATION FOR FAN STATOR MODULE REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE OIL (CHANGE) SERVICING WARNING: DO NOT LET HOT OIL GET ON YOU. HOT OIL CAN BURN YOU. The oil tank is drained by using the two quick disconnect ports in the oil supply and scavenge return lines and a bucket. The drain ports are located in the oil supply and scavenge returns lines at the 6:00 position off the fan case.
Oil Tank Servicing: The oil tank is manually filled by hand pouring quart cans of oil into the oil tank at the manual fill port. The manual fill port cap has a dipstick attached to it. This dipstick indicated the amount of oil that needs to be added to bring the oil level to full. The oil tank dipstick reads in gallons:
Oil Tank Draining: - connect locally manufactured drain tube to the drain ports and catch the oil (11 gallons or 42 liters) in a container.
- the 1/2 mark means that 1/2 gallon (2 quarts) needs to be added. - the 3/4 mark means that 3/4 gallon (3 quarts) needs to be added - the 4/4 mark means that 1 gallon (4 quarts) needs to be added - the 5/4 mark means that 1.25 gallon (5 quarts) needs to be added. Note: There is no need to service the oil tank unless it is at or below the 4/4 mark - 1 gallon or 4 quarts low.
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GE90
TRAINING MANUAL
ENGINE OIL (CHANGE) SERVICING EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
INTEGRATED DRIVE GENERATOR - SERVICING (OIL CHANGE) WARNING: DO NOT LET HOT OIL GET ON YOU. HOT OIL CAN BURN YOU.
The IDG oil is serviced by: - installing the IDG case drain plug
The Integrated Drive Generator is located on the left, aft face of the accessory gearbox.
- pressure servicing the IDG through the remote service lines.
IDG Oil Servicing: - attaching a hose to the overfill remote service line to relieve any pressure in the system. - removing the IDG case drain plug and catching the oil (1.5 gallons or 6 liters) in a container. The generator remote oil service lines are attached to the aft side of the engine drain lines.
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GE90
TRAINING MANUAL
INTEGRATED DRIVE GENERATOR - SERVICING (OIL CHANGE) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
BACKUP GENERATOR - SERVICING (OIL CHANGE)
WARNING: DO NOT LET HOT OIL GET ON YOU. HOT OIL CAN BURN YOU. The Backup Generator is located on the left, forward face of the accessory gearbox.
The Backup Generator oil is serviced by: - installing the Backup Generator case drain plug - pressure servicing the Backup Generator through the remote service lines.
Backup Generator Oil Draining: - attach a hose to the overfill remote service line to relieve any pressure in the system. - remove the Backup Generator case drain plug and catching the oil (1 gallon or 3.7 liters) in a container. The generator remote oil service lines are attached to the aft side of the engine drain lines.
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GE90
TRAINING MANUAL
BACKUP GENERATOR - SERVICING (OIL CHANGE) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
DRAIN AND SERVICE MODULE ASSEMBLY REMOVAL/INSTALLATION Drain Module Installation: The drain and service module assembly is located on the aft side of the fan stator module at the 6:00 position. The drain module takes engine accessory gearbox drive pad, fuel driven actuator and fuel driven valve internal leakage overboard. The service module contains the engine oil lines, air lines and electrical harnesses that run between the fan stator and propulsor.
- install the drain assembly - connect the eight drain tubes - connect the IDG and Backup Generator remote service lines - connect the manual override flexible cable from the starter - connect the forward lower fire detector.
Drain Module Removal: - disconnect the forward lower fire detector - disconnect the manual override flexible cable from the starter - disconnect the IDG and Backup Generator remote service lines - disconnect the eight drain tubes - remove the drain assembly.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
IDG FILL TUBE
BACKUP GENERATOR FILL TUBE
BACKUP GENERATOR OVERFLOW TUBE
IDG OVERFLOW TUBE
FORWARD LOWER FIRE DETECTOR (NOT SHOWN)
B SERVICE MODULE
DRAIN AND SERVICE MODULE ASSEMBLY REMOVAL/INSTALLATION (SHEET 1) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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MANUAL OVERRIDE FLEXIBLE CABLE
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
B
DRAIN AND SERVICE MODULE ASSEMBLY REMOVAL/INSTALLATION (SHEET 2) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
ELECTRICAL HARNESS REMOVAL/INSTALLATION Electrical Harness Removal: - disconnect the electrical harness connectors at the bottom of the fan case - remove the heatshield blanket - remove the bottom of the fire seal - remove the electrical connectors from the springs clips and quarter turn clamps. Tie the electrical harnesses out of the way on the propulsor.
Electrical Harness Installation: - install the electrical harnesses into the springs clips and quarter turn clamps - connect the electrical harness connectors at the bottom of the fan case - install the bottom of the fire seal - install the heatshield blanket.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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ELECTRICAL HARNESSES REMOVAL/INSTALLATION (SHEET 1) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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ELECTRICAL HARNESSES REMOVAL/INSTALLATION (SHEET 2) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL W729
HEATSHIELD BLANKET
W722
W724 FIRE SEAL W728
SEE E
W738
BOLTS (2 LOCATIONS)
SAFETY CLIPS (3 LOCATIONS)
FWD
D
ELECTRICAL HARNESSES REMOVAL/INSTALLATION (SHEET 3) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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E
1134065-05-A
ELECTRICAL HARNESSES REMOVAL/INSTALLATION (SHEET 4) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
LOWER HYDRAULIC BIFURCATION ASSEMBLY REMOVAL/INSTALLATION Lower Hydraulic Bifurcation Assembly Removal: - disconnect the eight pressure air tubes in front of the lower bifurcation fire seal and at 12:00 position at the upper end of the service module - disconnect the oil tank and oil return tubes in front of the lower bifurcation fire seal and at 12:00 position at the upper end of the service module - remove the lower hydraulic bifurcation assembly. Lower Hydraulic Bifurcation Assembly Installation: - install the lower hydraulic bifurcation assembly - connect the oil tank and oil return tubes in front of the lower bifurcation fire seal and at 12:00 position at the upper end of the service module - connect the eight pressure air tubes in front of the lower bifurcation fire seal and at 12:00 position at the upper end of the service module.
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GE90
TRAINING MANUAL
LOWER HYDRAULIC BIFURCATION ASSEMBLY REMOVAL/INSTALLATION (SHEET 1) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
C
LOWER HYDRAULIC BIFURCATION ASSEMBLY REMOVAL/INSTALLATION (SHEET 2) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
LOWER HYDRAULIC BIFURCATION ASSEMBLY REMOVAL/INSTALLATION (SHEET 3) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
LOWER HYDRAULIC BIFURCATION ASSEMBLY REMOVAL/INSTALLATION (SHEET 4) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
BLANK OFF PANELS REMOVAL/INSTALLATION The eight Blank Off Panels are located between the bleed air deflector panels on the inner cowl support. The blank off panels are removed to get access to the fan stator module aft mount bolts. To help during installation, the blank off panel installation positions are etched into the panels (Example - POS 1&5). The panels are numbered from aft looking forward starting at 12:00 o'clock of the engine. Blank Off Panel Removal: - remove the screws from the blank off panels and remove the panels Blank Off Panel Installation: - install the blank off panels by position number and install the screws.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
BLANK OFF PANELS REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
FILLET FAIRINGS REMOVAL/INSTALLATION The four Fillet Fairings are located on the bleed air deflector panels and upper (12:00 o'clock) and lower (6:00 o'clock) bifurcation firewalls. The fillet fairings are removed to get access to the fan stator module aft mount bolts. Fillet Fairing Removal: - remove the two different length screws of the fillet fairings and remove the fairings Fillet Fairings Installation: - install the fillet fairings and the two different length screws.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
FILLET FAIRINGS REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
BLEED AIR DEFLECTOR PANELS REMOVAL/ INSTALLATION The ten Bleed Air Deflector Panels are located around the inner cowl support. The Bleed Air Deflector Panels are removed to get access to the fan stator module aft mount bolts. To help during installation, the bleed air deflector panel installation positions are etched into the panels (Example POS 5&10). The panels are numbered from aft looking forward starting at 12:00 o'clock of the engine. Bleed Air Deflector Panel Removal: - remove the screws from the bleed air deflector panels and remove the panels. Bleed Air Deflector Panel Installation: - install the bleed air deflector panels and install the screws.
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
BLEED AIR DEFLECTOR PANEL
BLEED AIR DEFLECTOR PANEL
BLEED AIR DEFLECTOR PANEL FWD BLEED AIR DEFLECTOR PANEL
BLEED AIR DEFLECTOR PANEL
INSTALLATION POSITION LOCATION (EACH PANEL) NOTE: LEFT SIDE IS SHOWN, RIGHT SIDE IS OPPOSITE
SCREW (29 LOCATIONS)
BLEED AIR DEFLECTOR PANELS REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
LOWER BIFURCATION BRIDGE The Lower Bifurcation Bridge is located at the top of the lower bifurcation firewall. The lower bifurcation bridge must be removed to allow for fan stator module removal. Lower Bifurcation Bridge Removal: - remove sealant between the contact surfaces - remove the nuts and bolts that attach the lower bifurcation bridge to the fan stator - remove the lower bifurcation bridge. Lower Bifurcation Bridge Installation: Note: Clean the lower bifurcation bridge using the Aircraft Maintenance Manual procedures before installation. - install the lower bifurcation bridge. - install the nuts and bolts that attach the lower bifurcation bridge to the fan stator - apply sealant between the contact surfaces.
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
WASHER (5 LOCATIONS) LOWER BIFURCATION BRIDGE
NUT (5 LOCATIONS) BOLT (4 LOCATIONS) WASHER (4 LOCATIONS)
LOWER BIFURCATION FIREWALL
LOWER AND UPPER BIFURCATION BRIDGES REMOVAL/INSTALLATION (SHEET 1) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
UPPER BIFURCATION BRIDGE The Upper Bifurcation Bridge is located at the bottom of the upper bifurcation firewall. The upper bifurcation bridge must be removed to allow for fan stator module removal. Upper Bifurcation Bridge Removal: - remove sealant between the contact surfaces - remove the nuts and bolts that attach the upper bifurcation bridge to the fan stator - remove upper bifurcation bridge. Upper Bifurcation Bridge Installation: Note: Clean the upper bifurcation bridge using the Aircraft Maintenance Manual procedures before installation. - install the upper bifurcation bridge. - install the nuts and bolts that attach the upper bifurcation bridge to the fan stator - apply sealant between the contact surfaces.
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GE90
TRAINING MANUAL
LOWER AND UPPER BIFURCATION BRIDGES REMOVAL/INSTALLATION (SHEET 2) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
SEAL PRESSURIZATION AND OIL TANK VENTILATION TUBES REMOVAL/INSTALLATION The seal pressurization and oil tank ventilation tubes are located at the 12:00 position in the upper bifurcation fire wall. These tubes must be disconnected to allow for fan stator module separation. Seal Pressurization and Oil Tank Ventilation Tube Removal: - disconnect the seal pressurization and oil tank ventilation tubes. Seal Pressurization and Oil Tank Ventilation Tube Installation: - connect the seal pressurization and oil tank ventilation tubes.
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GE90
TRAINING MANUAL
SEAL PRESSURIZATION AND OIL TANK VENTILATION TUBES REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE ANTI-ICE DUCT REMOVAL/INSTALLATION The Engine Anti-Ice Duct is located at the 12:00 position in the upper bifurcation fire wall. The engine anti-ice duct must be disconnected to allow for fan stator module separation. Engine Anti-Ice Duct Removal: - disconnect the engine anti-ice duct. Engine Anti-Ice Duct Installation: - connect the engine anti-ice duct.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ENGINE ANTI-ICE DUCT REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN BLADE REMOVAL / INSTALLATION The spinner is attached to the front of the fan disk.
- Align the "1" of the spinner with number "1" on the support ring to align the offset bolt holes.
To remove the spinner do the following: - Remove the 22 axial mount bolts on the spinner and remove the spinner.
NOTE: The number "1" is marked on the front of the support ring and on the spinner.
NOTE: The 44 radial screws on the outer diameter of the spinner - and on either side of each axial mount bolt are fan assembly balance screws. - Remove the 22 bolts and the support ring. To install the spinners do the following: - Align the support ring number "1"s with the number "1"s on the fan disk. Install the 22 bolts. Note: The number "1" is marked on the backside and front side of two bolt flanges of the support ring. These number "1"s are aligned with the number "1"s marked on either side of the fan disk number 1 blade slot. The offset bolt hole is marked with an "O". Alignment of the number "1"s will align the offset bolt holes of the support ring and fan disk.
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GE90
TRAINING MANUAL
SEE B
SPINNER OFFSET BOLT HOLE FORWARD LOOKING AFT
B
SUPPORT RING OFFSET BOLT HOLE
SPINNER CONE (ONE PIECE) REMOVAL / INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
FAN BLADE REMOVAL The twenty-two fan blades are located in the forward end of the engine. The fan blades must be removed to allow for fan stator module separation. NOTE: The blades are numbered counter clockwise when you are facing them. The number "1" is engraved on the forward face of the fan disk, on either side of the number one blade slot. Note: The fan blade platforms and fan blades are balance critical. Before removal use a felt tip pen and tape to mark the location of the fan blade platforms, fan blades and other hardware.
NOTE: A rubber seal around the platform creates a tight fit between the blades holding the platform in place during the assembly process. The platforms are secured in place by the spinner. - Remove the bolt securing the spacer and the retainer together. Fan Blade Spacer Removal: - Remove the spacer using the fan blade spacer removal tool (9C1202) or hydraulic removal tool (9C3001) - Place the detail pin in the bolt hole of the fan blade spacer
- Number the blades and platforms before removal. - Turn the fan assembly counterclockwise to put the first fan blade to be removed at the 6 o'clock position.
- move the slide hammer aft and forward to remove the fan blade spacer. - Remove the dovetail key from the fan disk slot.
- Remove the blade platform on either side of the blade to be removed. Record their original position, to be sure to install them at the same location.
- Remove the retainer from the fan disk slot. - Remove the fan blade from the fan disk slot. Note: Do not remove the fan disk shims.
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GE90
TRAINING MANUAL
FAN BLADE REMOVAL EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C1202 FAN BLADE SPACER REMOVAL TOOL The 9C1202 fan blade spacer removal tool is used to remove the fan blade spacer. Fan Blade Spacer Removal: - Place the detail pin in the bolt hole of the fan blade spacer - move the slide hammer aft and forward to remove the fan blade spacer. Fan Blade Installation: - install the fan blade into the fan blade dovetail slot - use a soft mallet to drive the fan blade spacer into position.
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GE90
TRAINING MANUAL
FAN BLADE SPACER REMOVAL TOOL EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE90
TRAINING MANUAL
FAN BLADE SPACER REMOVAL/INSTALLATION TOOLS The 9C3001 fan blade spacer removal tool is used to remove the fan blade spacers. Fan Blade Spacer Removal: - Place the fan blade spacer removal tool detail pin into the fan blade spacer bolt hole and use hydraulic pressure to remove the fan blade spacer.
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN BLADE SPACER REMOVAL TOOL (9C3001) EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN BLADE INSTALLATION Install the fan blades and fan blade platforms at their original locations (for balancing purposes). - Turn the fan assembly counterclockwise to put the fan blade slot for the fan blade to be installed at the 6 o'clock position. Note: Be sure to clean and lubricate the fan blades and fan disk before installation. - Install the fan blade into the fan disk blade slot.
- Install the bolt that holds the retainer and the spacer together. - Install the blade platforms on either side of the fan blade. Insert the rear of the platform under the booster flange, then push the forward part of the platform toward the fan disk. NOTE: A rubber seal around the platform creates a tight fit between the blades holding the platform in place during the assembly process. The platforms are secured in place by the spinner.
- Install the blade retainer into the fan disk retainer slot. - Install the dovetail key into the fan disk blade slot. - Insert the fan blade spacer between the fan blade and the dovetail key. - Hit the spacer with a plastic mallet until fully installed or use the hydraulic installation tool (9C3001).
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GE90
TRAINING MANUAL
FAN BLADE INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
ACOUSTIC PANEL REMOVAL/INSTALLATION The Acoustic Panels are located around the fan booster. The acoustic panels are removed to get access to the fan stator module forward mount bolts. There are six acoustic panels. Acoustic Panel Removal: - Remove the screws that attach the acoustic panels to the fan booster - remove the acoustic panels.
Acoustic Panel Installation: - install the acoustic panels. - Install the screws that attach the acoustic panels to the fan booster.
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE (OGVS)
ACOUSTIC PANEL REMOVAL/INSTALLATION EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
BOOSTER SPLITTER FAIRING The Booster Splitter Fairing is attached to the leading edge of the low pressure compressor case. The Booster Splitter Fairing is removed to provide clearance between the pressure compressor case and fan stator while removing and installing the fan stator. Booster Splitter Fairing Removal: - Remove the bolts that attach the booster splittler fairing to the low pressure compressor leading edge. - remove the booster splitter fairing.
Booster Splitter Faiting Installation: - Install the booster splitter fairing. - install the bolts that attach the booster splittler fairing to the low pressure compressor leading edge.
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GE AIRCRAFT ENGINES
GE90
*
TRAINING MANUAL
*
BOOSTER SPLITTER FAIRING FAN BOOSTER
*
*
BOOSTER SPLITTER FAIRING
A
FAN STATOR MODULE (OGVS)
SEE B
SCREW (50 LOCATIONS) * SEE C
A-A
BOOSTER SPLITTER FAIRING EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
LPC ANTI-ICE TUBE ATTACHMENT POINTS WILL NOT EXIST ON NON ANTI-ICED BOOSTER SPLITTER FAIRING
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
LOW PRESSURE COMPRESSOR (LPCAI) ANTI-ICE TUBES GE SB 75-003 deleted the Low pressure compressor antiice system and was introduced in production on engines 900-129 and up. Reason for service bulletin introduction: Engine tests indicate that the LPC Anti-Ice system is not required.
LPC Anti-IceTube Installation: - connect the two bolts that attach the tube to the booster splitter fairing at the forward end, the nut at the aft end and the clamp.
For those engines that still have the LPC Anti-Ice Tubes they are located at four locations around the booster module. The acoustic panels much be removed to get access to them. The LPC Anti-Ice Tubes delivers seventh stage HPC air to the booster splitter fairing. The tubes must be removed to allow for fan stator removal. LPC Anti-IceTube Removal: - disconnect the two bolts that attach the tube to the booster splitter fairing at the forward end, the nut at the aft end and the clamp.
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TRAINING MANUAL
*
* LPC ANTI-ICE TUBES DELETED BY SB 75-003
LOW PRESSURE COMPRESSOR ANTI-ICE TUBES EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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4. 9C6030 System
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR REMOVAL & INSTALLATION - 9C6030 TRANSFER SYSTEM
Objectives: At the completion of this section a student should be able to: ... identify the tooling required for fan stator module removal/installation
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION 9C6030 TRANSFER SYSTEM The Fan Stator Module is located on the front of the engine. The fan stator module must be removed to perform a normal engine change. The fan stator module can be removed and installed with or without the inlet cowl installed. The fan stator module removal/installation, using the 9C6030 Transfer System, can be done with the engine in the 9C6000 or 9C6025 Installation and Shipping Stands. Note: If using9C6000 Installation and Shipping Stand make sure that the fan hub frame mount support adapters are installed first.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
Fan Stator Module Removal: - attach the left and right 9C6030P01 Forward Adapters to the fan case flange. - attach the left and right 9C6030 Aft Adapters to the aft fan case ground handling mounts - attach the left 9C6030 Side Frame to the left Forward Adapter and Aft Adapter. - attach the right 9C6030 Side Frame to the right Forward Adapter and Aft Adapter.
Fan Stator Module Installation: - install the 9C1277 guide pin set into the fan stator module aft flange
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FORWARD ADAPTER MOUNT AFT ADAPTER MOUNT
FRAME HEIGHT ADJUSTING HANDLE
FRAME HEIGHT ADJUSTING HANDLE
SIDE FRAME (RIGHT SIDE SHOWN, LEFT SIDE OPPOSITE)
FAN STATOR MODULE REMOVAL/INSTALLATION - 9C6030 TRANSFER SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR (AFT LOOKING FORWARD)
FRAME HEIGHT ADJUSTING HANDLE
FORWARD ADAPTER
SIDE FRAME
FORWARD ADAPTER SIDE FRAME
SIDE BEAM AND FORWARD ADAPTERS (LEFT SIDE SHOWN, RIGHT SIDE OPPOSITE)
FAN STATOR MODULE REMOVAL/INSTALLATION - 9C6030 TRANSFER SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL AFT ADAPTER PAD
AFT ADAPTER PAD
AFT ADAPTER
FAN STATOR (AFT LOOKING FORWARD) SIDE FRAME FRAME HEIGHT ADJUSTING HANDLE
AFT ADAPTER
SIDE FRAME
FAN STATOR AFT MOUNT SIDE FRAME AND AFT ADAPTER (RIGHT SIDE SHOWN, LEFT SIDE OPPOSITE)
FAN STATOR MODULE REMOVAL/INSTALLATION - 9C6030 TRANSFER SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
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GE AIRCRAFT ENGINES
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TRAINING MANUAL
FRAME HEIGHT ADJUSTING HANDLE (4 LOCATIONS)
FAN STATOR MODULE REMOVAL/INSTALLATION - 9C6030 TRANSFER SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
FAN STATOR MODULE REMOVAL/INSTALLATION 9C6030 TRANSFER SYSTEM (CONT.) Fan Stator Module Removal:
Fan Stator Module Installation:
Maintenance tip: To prevent the engine from shifting and causing damage or injury during fan stator removal do the following:
Note: Clean, lubricate and torque fan stator module flanges and bolts as stated in the Aircraft Maintenance Manual.
- adjust the left 9C6030 side frame forward wheel handle "down" until the wheel is off the ground. - adjust the left 9C6030 side beam aft wheel handle "down" until there is a gap between the Aft Adapter Pad and the fan stator. - adjust the 9C6030 Side Frame wheel handles "up" until the forward wheel make contact with the ground and the Aft Adapter pad makes contact with the fan stator - adjust the 9C6030 Side Frame "up" one full turn of the handle. Fan Stator Bolt Removal: - remove the bolts from the forward flange of the fan stator module at the fan hub frame. Use the 9C6014 personnel stand as necessary. - remove the bolts from the aft flange of the fan stator module at the fan hub frame. - move the 9C6030 and fan stator, by hand, away from the propulsor. EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
- apply lubricant to the threads of the bolts. - apply either zinc chromate primer or epoxy primer to the fan hub frame flanges, the shank of the bolts and to the bearing surface of the integral washers on the bolts. Note: Use the 9C6030 Side Frame wheels to adjust the height of the fan module and move the 9C6030 side to side, by hand, to adjust side clearance during installation. - move the 9C6030 and fan stator, by hand, toward the propulsor. - install the bolts to the forward flange of the fan stator module at the fan hub frame. Use the 9C6014 personnel stand as necessary. - install the bolts to the aft flange of the fan stator module at the fan hub frame.
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
A B
B
A
FAN STATOR MODULE REMOVAL/INSTALLATION - 9C6030 TRANSFER SYSTEM EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C6014 PERSONNEL STAND The 9C6014 personnel stand allows for access to the fan stator module forward flange bolts and acoustical panels. The stand is made up of three parts and is placed into the fan stator module after the fan blades have been removed. When assembled, the 9C6014 personnel stand provide steps for the mechanic to reach the acoustic panels and upper bolts of the fan stator module forward bolt flange. Forklift tubes are positioned within the stand and usable from front side of the stand.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
B
A
9C6014 STAND B
9C6014 PERSONNEL STAND EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
9C1277 GUIDE PIN SET The 9C1277 guide pin set is used align the fan stator module bolt flanges onto the propulsor bolt flanges. The guide pin set contains eight guides pins. The guide pins are installed by hand into the fan stator module aft bolt flange. Install the guides pins at equal distances around the aft fan stator module bolt flange. When the fan stator and fan hub frame flanges are together, remove the guide pins as the bolts are installed.
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
AFT FAN STATOR MODULE FLANGE
GE90
TRAINING MANUAL
FAN STATOR MODULE OUTLET GUIDE VANES
9C1277 GUIDE PIN (8 LOCATIONS)
FORWARD FAN STATOR MODULE FLANGE GUIDE PIN
FAN HUB FRAME
9C1277 GUIDE PIN SET EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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TRAINING MANUAL
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5. Engine Replacement Test
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
REPLACEMENT ENGINE TEST
Objectives: At the completion of this section a student should be able to: ... identify the tests required for fan stator module removal/installation
EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
REPLACEMENT ENGINE TEST The engine replacement test is located in the Power Plant Adjustment/Test section of the Aircraft Maintenance Manual chapter 71-00-00. The replacement engine test is done to make sure that the engine will operate normally after an engine change. Replacement Engine (Pretested Engine) Test: - if engine is preserved, do an engine depreservation - do Test No. 16 - EEC (FADEC) Test (MAT Initiated Test) - do the Engine Fire Detection Operational Test - do Test No. 1 - Pneumatic Leak Test - do Test No. 2 - Dry Motor Leak Test - do Test No. 3 - Standard Wet Motor if not done during depreservation - do Test No. 14 - Engine Fuel Driven Actuator Test (MAT Initiated Test) - do Test No. 5 - Idle Leak Test - do Test No. 15 - Engine Air Driven Actuator Test (MAT Initiated Test) - do Test No. 10 - Low Pressure System (Fan/LPT) Vibration Survey - do the Engine Air Supply Operational Test - do a check of the engine maintenance status messages on the EICAS. EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
71-00-05 71-00-00
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GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
REPLACEMENT ENGINE TEST EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
71-00-00 71-00-05
Page 5-3 Sep 05
GE AIRCRAFT ENGINES
GE90
TRAINING MANUAL
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EFFECTIVITY B777/GE90-110B, -115B GE PROPRIETARY INFORMATION
71-00-05
Page 5-4 Sep 05